text: (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
  'use strict';
  'use-strict';
  
  var ko = require('knockout');
  var $ = require('jQuery');
  var wNumb = require('wNumb');
  
  var _require = require('./map'),
      initMap = _require.initMap,
      initSearch = _require.initSearch,
      setMarkers = _require.setMarkers,
      populateInfoWindow = _require.populateInfoWindow,
      searchPlace = _require.searchPlace,
      geocoder = _require.geocoder,
      hideMarkers = _require.hideMarkers,
      animateMarker = _require.animateMarker,
      showSpecifiedMarker = _require.showSpecifiedMarker;
  
  window.initMap = initMap;
  // console.log(hideMarkers);
  var Attraction = function Attraction(data) {
      this.id = ko.observable(0);
      this.title = data.venue.name;
      this.address = data.venue.location.address || 'No address';
      this.city = data.venue.location.city;
      this.rating = data.venue.rating || 0.0;
      this.checkins = data.venue.stats.checkinsCount;
      this.checkinsFormat = checkinFormat.to(this.checkins) + ' checkins';
      this.url = data.venue.id;
      if (data.venue.featuredPhotos) {
          this.imgSrc = data.venue.featuredPhotos.items[0].prefix + '100x100' + data.venue.featuredPhotos.items[0].suffix;
      } else {
          this.imgSrc = 'https://igx.4sqi.net/img/general/100x100/11932034_wMs88Hpv1wzeN7TAVZ6QsfDIbJwXJVvELefxM4i3mLE.jpg';
      }
      this.location = {
          lat: data.venue.location.lat,
          lng: data.venue.location.lng
      };
      this.phone = data.venue.contact.formattedPhone || 'No contact info available';
  };
  
  var checkinFormat = wNumb({
      thousand: ','
  });
  
  var App = function App() {
      var self = this;
      var CLIENT_ID = '1O5OM0UH1XQFPBXM000UK2B5YZM1KCQ0NWZCOBLBWNPASWGP';
      var CLIENT_SECRET = 'SNAJMK1AGOCQAOHDFQBUVP5BT25FDHYK00FLEYBIYRRCNUBL';
  
      self.location = 'Hong Kong, HK';
      self.query = 'fun';
      self.baseUrl = 'https://api.foursquare.com/v2/venues/explore';
  
      this.requestFourSquare = function () {
          var requestFlag;
          var settings = {
              url: self.baseUrl,
              data: {
                  client_id: CLIENT_ID,
                  client_secret: CLIENT_SECRET,
                  near: self.location,
                  query: self.query,
                  venuePhotos: '1',
                  v: '20170801'
              },
              cache: true,
              dataType: 'json'
          };
  
          $.ajax(settings).done(function (results) {
              viewModel.parseResults(results);
              //from map.js function
              setMarkers(viewModel.resultList());
              console.log(results);
              return true;
          }).fail(function () {
              alert('cannot get data from foursquare');
              return false;
          });
      };
  
      this.init = function () {
          this.requestFourSquare();
      };
  };
  
  var ViewModel = function ViewModel() {
      var self = this;
      this.resultList = ko.observableArray([]);
      this.locationInput = ko.observable('');
      this.filter = ko.observable('');
  
      self.parseResults = function (data) {
          //Set the results to the data we received in json form
          var results = data.response.groups[0].items;
  
          self.resultList.removeAll();
  
          results.forEach(function (resultData) {
              self.resultList.push(new Attraction(resultData));
          });
          //update id 
          updateResultId();
          //debug
          // console.log(self.resultList());
      };
  
      ko.extenders.notifyMarkers = function (target) {
          target.subscribe(function (array) {
              hideMarkers(array);
          });
          return target;
      };
  
      self.filteredItems = ko.computed(function () {
          var filter = self.filter().toLowerCase();
  
          if (!filter) {
              return self.resultList();
          } else {
              return ko.utils.arrayFilter(self.resultList(), function (result) {
                  return result.title.toLowerCase().includes(filter);
              });
          }
      }).extend({ notifyMarkers: '', rateLimit: 50 });
  
      self.toggleFilters = function () {
          document.getElementById('filters').classList.toggle('slide-in');
      };
  
      self.searchLocation = function () {
          searchPlace(self.locationInput(), app);
      };
  
      self.emptyFilter = function () {
          self.filter('');
      };
  
      self.showMarker = function (item) {
          var index = item.id() - 1;
          showSpecifiedMarker(index);
      };
  
      self.sortByRating = function () {
          toggleButton('#ratingsBtn');
          self.resultList.sort(function (a, b) {
              return a.rating === b.rating ? 0 : a.rating > b.rating ? -1 : 1;
          });
          updateResultId();
          setMarkers(self.resultList());
      };
  
      self.sortByCheckins = function () {
          toggleButton('#checkinsBtn');
          self.resultList.sort(function (a, b) {
              return a.checkins === b.checkins ? 0 : a.checkins > b.checkins ? -1 : 1;
          });
          updateResultId();
          setMarkers(self.resultList());
      };
  
      var updateResultId = function updateResultId() {
          for (var i = 0; i < self.resultList().length; i++) {
              self.resultList()[i].id(i + 1);
          }
      };
  
      var toggleButton = function toggleButton(btnId) {
          $('#ratingsBtn').removeClass('filter-btn-selected');
          $('#checkinsBtn').removeClass('filter-btn-selected');
          $(btnId).addClass('filter-btn-selected');
      };
  };
  
  // Create an alert if Google Maps doesn't respond
  function googleError() {
      'use strict';
  
      alert("Google is not responding. Check your connection or come back later.");
  }
  
  var viewModel = new ViewModel();
  var app = new App();
  app.init();
  ko.applyBindings(viewModel);
  
  },{"./map":3,"jQuery":5,"knockout":6,"wNumb":2}],2:[function(require,module,exports){
  (function (global){
  ; var __browserify_shim_require__=require;(function browserifyShim(module, exports, require, define, browserify_shim__define__module__export__) {
  'use strict';
  
  var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
  
  (function () {
  
  	'use strict';
  
  	var
  	/** @const */FormatOptions = ['decimals', 'thousand', 'mark', 'prefix', 'postfix', 'encoder', 'decoder', 'negativeBefore', 'negative', 'edit', 'undo'];
  
  	// General
  
  	// Reverse a string
  	function strReverse(a) {
  		return a.split('').reverse().join('');
  	}
  
  	// Check if a string starts with a specified prefix.
  	function strStartsWith(input, match) {
  		return input.substring(0, match.length) === match;
  	}
  
  	// Check is a string ends in a specified postfix.
  	function strEndsWith(input, match) {
  		return input.slice(-1 * match.length) === match;
  	}
  
  	// Throw an error if formatting options are incompatible.
  	function throwEqualError(F, a, b) {
  		if ((F[a] || F[b]) && F[a] === F[b]) {
  			throw new Error(a);
  		}
  	}
  
  	// Check if a number is finite and not NaN
  	function isValidNumber(input) {
  		return typeof input === 'number' && isFinite(input);
  	}
  
  	// Provide rounding-accurate toFixed method.
  	function toFixed(value, decimals) {
  		var scale = Math.pow(10, decimals);
  		return (Math.round(value * scale) / scale).toFixed(decimals);
  	}
  
  	// Formatting
  
  	// Accept a number as input, output formatted string.
  	function formatTo(decimals, thousand, mark, prefix, postfix, encoder, decoder, negativeBefore, negative, edit, undo, input) {
  
  		var originalInput = input,
  		    inputIsNegative,
  		    inputPieces,
  		    inputBase,
  		    inputDecimals = '',
  		    output = '';
  
  		// Apply user encoder to the input.
  		// Expected outcome: number.
  		if (encoder) {
  			input = encoder(input);
  		}
  
  		// Stop if no valid number was provided, the number is infinite or NaN.
  		if (!isValidNumber(input)) {
  			return false;
  		}
  
  		// Rounding away decimals might cause a value of -0
  		// when using very small ranges. Remove those cases.
  		if (decimals !== false && parseFloat(input.toFixed(decimals)) === 0) {
  			input = 0;
  		}
  
  		// Formatting is done on absolute numbers,
  		// decorated by an optional negative symbol.
  		if (input < 0) {
  			inputIsNegative = true;
  			input = Math.abs(input);
  		}
  
  		// Reduce the number of decimals to the specified option.
  		if (decimals !== false) {
  			input = toFixed(input, decimals);
  		}
  
  		// Transform the number into a string, so it can be split.
  		input = input.toString();
  
  		// Break the number on the decimal separator.
  		if (input.indexOf('.') !== -1) {
  			inputPieces = input.split('.');
  
  			inputBase = inputPieces[0];
  
  			if (mark) {
  				inputDecimals = mark + inputPieces[1];
  			}
  		} else {
  
  			// If it isn't split, the entire number will do.
  			inputBase = input;
  		}
  
  		// Group numbers in sets of three.
  		if (thousand) {
  			inputBase = strReverse(inputBase).match(/.{1,3}/g);
  			inputBase = strReverse(inputBase.join(strReverse(thousand)));
  		}
  
  		// If the number is negative, prefix with negation symbol.
  		if (inputIsNegative && negativeBefore) {
  			output += negativeBefore;
  		}
  
  		// Prefix the number
  		if (prefix) {
  			output += prefix;
  		}
  
  		// Normal negative option comes after the prefix. Defaults to '-'.
  		if (inputIsNegative && negative) {
  			output += negative;
  		}
  
  		// Append the actual number.
  		output += inputBase;
  		output += inputDecimals;
  
  		// Apply the postfix.
  		if (postfix) {
  			output += postfix;
  		}
  
  		// Run the output through a user-specified post-formatter.
  		if (edit) {
  			output = edit(output, originalInput);
  		}
  
  		// All done.
  		return output;
  	}
  
  	// Accept a sting as input, output decoded number.
  	function formatFrom(decimals, thousand, mark, prefix, postfix, encoder, decoder, negativeBefore, negative, edit, undo, input) {
  
  		var originalInput = input,
  		    inputIsNegative,
  		    output = '';
  
  		// User defined pre-decoder. Result must be a non empty string.
  		if (undo) {
  			input = undo(input);
  		}
  
  		// Test the input. Can't be empty.
  		if (!input || typeof input !== 'string') {
  			return false;
  		}
  
  		// If the string starts with the negativeBefore value: remove it.
  		// Remember is was there, the number is negative.
  		if (negativeBefore && strStartsWith(input, negativeBefore)) {
  			input = input.replace(negativeBefore, '');
  			inputIsNegative = true;
  		}
  
  		// Repeat the same procedure for the prefix.
  		if (prefix && strStartsWith(input, prefix)) {
  			input = input.replace(prefix, '');
  		}
  
  		// And again for negative.
  		if (negative && strStartsWith(input, negative)) {
  			input = input.replace(negative, '');
  			inputIsNegative = true;
  		}
  
  		// Remove the postfix.
  		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice
  		if (postfix && strEndsWith(input, postfix)) {
  			input = input.slice(0, -1 * postfix.length);
  		}
  
  		// Remove the thousand grouping.
  		if (thousand) {
  			input = input.split(thousand).join('');
  		}
  
  		// Set the decimal separator back to period.
  		if (mark) {
  			input = input.replace(mark, '.');
  		}
  
  		// Prepend the negative symbol.
  		if (inputIsNegative) {
  			output += '-';
  		}
  
  		// Add the number
  		output += input;
  
  		// Trim all non-numeric characters (allow '.' and '-');
  		output = output.replace(/[^0-9\.\-.]/g, '');
  
  		// The value contains no parse-able number.
  		if (output === '') {
  			return false;
  		}
  
  		// Covert to number.
  		output = Number(output);
  
  		// Run the user-specified post-decoder.
  		if (decoder) {
  			output = decoder(output);
  		}
  
  		// Check is the output is valid, otherwise: return false.
  		if (!isValidNumber(output)) {
  			return false;
  		}
  
  		return output;
  	}
  
  	// Framework
  
  	// Validate formatting options
  	function validate(inputOptions) {
  
  		var i,
  		    optionName,
  		    optionValue,
  		    filteredOptions = {};
  
  		for (i = 0; i < FormatOptions.length; i += 1) {
  
  			optionName = FormatOptions[i];
  			optionValue = inputOptions[optionName];
  
  			if (optionValue === undefined) {
  
  				// Only default if negativeBefore isn't set.
  				if (optionName === 'negative' && !filteredOptions.negativeBefore) {
  					filteredOptions[optionName] = '-';
  					// Don't set a default for mark when 'thousand' is set.
  				} else if (optionName === 'mark' && filteredOptions.thousand !== '.') {
  					filteredOptions[optionName] = '.';
  				} else {
  					filteredOptions[optionName] = false;
  				}
  
  				// Floating points in JS are stable up to 7 decimals.
  			} else if (optionName === 'decimals') {
  				if (optionValue >= 0 && optionValue < 8) {
  					filteredOptions[optionName] = optionValue;
  				} else {
  					throw new Error(optionName);
  				}
  
  				// These options, when provided, must be functions.
  			} else if (optionName === 'encoder' || optionName === 'decoder' || optionName === 'edit' || optionName === 'undo') {
  				if (typeof optionValue === 'function') {
  					filteredOptions[optionName] = optionValue;
  				} else {
  					throw new Error(optionName);
  				}
  
  				// Other options are strings.
  			} else {
  
  				if (typeof optionValue === 'string') {
  					filteredOptions[optionName] = optionValue;
  				} else {
  					throw new Error(optionName);
  				}
  			}
  		}
  
  		// Some values can't be extracted from a
  		// string if certain combinations are present.
  		throwEqualError(filteredOptions, 'mark', 'thousand');
  		throwEqualError(filteredOptions, 'prefix', 'negative');
  		throwEqualError(filteredOptions, 'prefix', 'negativeBefore');
  
  		return filteredOptions;
  	}
  
  	// Pass all options as function arguments
  	function passAll(options, method, input) {
  		var i,
  		    args = [];
  
  		// Add all options in order of FormatOptions
  		for (i = 0; i < FormatOptions.length; i += 1) {
  			args.push(options[FormatOptions[i]]);
  		}
  
  		// Append the input, then call the method, presenting all
  		// options as arguments.
  		args.push(input);
  		return method.apply('', args);
  	}
  
  	/** @constructor */
  	function wNumb(options) {
  
  		if (!(this instanceof wNumb)) {
  			return new wNumb(options);
  		}
  
  		if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== "object") {
  			return;
  		}
  
  		options = validate(options);
  
  		// Call 'formatTo' with proper arguments.
  		this.to = function (input) {
  			return passAll(options, formatTo, input);
  		};
  
  		// Call 'formatFrom' with proper arguments.
  		this.from = function (input) {
  			return passAll(options, formatFrom, input);
  		};
  	}
  
  	/** @export */
  	window.wNumb = wNumb;
  })();
  
  ; browserify_shim__define__module__export__(typeof wNumb != "undefined" ? wNumb : window.wNumb);
  
  }).call(global, undefined, undefined, undefined, undefined, function defineExport(ex) { module.exports = ex; });
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  
  },{}],3:[function(require,module,exports){
  'use strict';
  
  var styles = require('./mapstyle');
  var initMap;
  var map;
  var markers = [];
  var largeInfowindow, autocomplete, geocoder, bounds;
  initMap = function initMap() {
      //locate center of the map in Hong Kong
      var latlng = new google.maps.LatLng(22.3964, 114.1095);
      // Constructor creates a new map - only center and zoom are required.
      map = new google.maps.Map(document.getElementById('map'), {
          center: latlng,
          zoom: 10,
          zoomControl: true,
          zoomControlOptions: {
              position: google.maps.ControlPosition.TOP_LEFT
          },
          mapTypeControlOptions: {
              position: google.maps.ControlPosition.TOP_RIGHT
          },
          styles: styles
      });
      bounds = new google.maps.LatLngBounds();
      google.maps.event.addDomListener(window, 'resize', function () {
          if (bounds) {
              map.fitBounds(bounds);
          };
      });
      largeInfowindow = new google.maps.InfoWindow();
      initSearch();
  };
  
  function initSearch() {
      var input = document.getElementById('location-input');
      autocomplete = new google.maps.places.Autocomplete(input);
      autocomplete.bindTo('bounds', map);
      geocoder = new google.maps.Geocoder();
  }
  
  function searchPlace(address, app) {
      // Close the any infowindos that are open
      largeInfowindow.close();
      // Lookup address and get lat lng
      zoomToArea(address, geocoder, app);
  }
  
  function zoomToArea(address, geocoder, app) {
      geocoder.geocode({ 'address': address }, function (results, status) {
          if (status === google.maps.GeocoderStatus.OK) {
              app.location = results[0].formatted_address;
              app.query = 'fun';
              app.baseUrl = 'https://api.foursquare.com/v2/venues/explore';
              app.requestFourSquare();
          } else {
              window.alert('We could not find that location - try entering a more' + ' specific place.');
          }
      });
  }
  
  function setMarkers(list) {
      // Style the markers a bit. This will be our listing marker icon.
      var defaultIcon = makeMarkerIcon();
      // Reset bounds variable
      bounds = new google.maps.LatLngBounds();
      deleteMarkers();
      var item;
      for (var i = 0; i < list.length; i++) {
          item = list[i];
          //create a new marker for each item
          var marker = new google.maps.Marker({
              map: map,
              position: item.location,
              label: {
                  text: item.id() + ' ',
                  color: 'white',
                  fontSize: '12px',
                  fontWeight: '600'
              },
              animation: google.maps.Animation.DROP,
              name: item.title,
              imgSrc: item.imgSrc,
              address: item.address,
              city: item.city,
              checkins: item.checkinsFormat,
              rating: item.rating,
              url: item.url,
              phone: item.phone,
              icon: defaultIcon
          });
  
          markers.push(marker);
  
          //create an onclik event to open an infowindow at each marker
          marker.addListener('click', function () {
              animateMarker(-1, this);
              populateInfoWindow(this, largeInfowindow);
          });
  
          bounds.extend(markers[i].position);
      }
      // Extend the boundaries of the map for each marker if zoom option is set
      map.fitBounds(bounds);
  }
  
  // This function takes in a COLOR, and then creates a new marker
  // icon of that color. The icon will be 21 px wide by 34 high, have an origin
  // of 0, 0 and be anchored at 10, 34).
  function makeMarkerIcon() {
      var markerImage = new google.maps.MarkerImage('http://chart.googleapis.com/chart?chst=d_map_spin&chld=1.15|0|' + '0091ff' + '|40|_|%E2%80%A2', new google.maps.Size(21, 34), new google.maps.Point(0, 0), new google.maps.Point(10, 34), new google.maps.Size(21, 34));
      return markerImage;
  }
  
  function populateInfoWindow(marker, infoWindow) {
      //Always close the exsiting infowindow first
      largeInfowindow.close();
      // Set the infoWindow on the marker
      infoWindow.marker = marker;
      infoWindow.setContent('\n<div class=" d-flex">\n\t<img class="result-img" src="' + marker.imgSrc + '">\n    <div class="result-text-container">\n        <h3 class="result-title">' + marker.label.text + ' . ' + marker.name + '</h3>\n        <h4 class="result-subtitle">' + marker.address + '</h4>\n        <h4 class="result-subtitle">' + marker.city + '</h4>\n        <div class="result-details d-flex align-items-center"><span class="result-icon"><i class="fa fa-star" aria-hidden="true"></i></span>\n            <h5>' + marker.checkins + '</h5><span class="result-icon"><i class="fa fa-phone" aria-hidden="true"></i></span>\n            <h5>' + marker.phone + '</h5></div>\n        <div>\n            <div class="rating">' + marker.rating + '</div>\n        </div>\n    </div>\n</div>\n<div class="result-link"><a target="_blank" href="https://foursquare.com/v/' + marker.url + '">See more on Foursquare</a></div>\n    ');
      //Display the infowindow 
      infoWindow.open(map, marker);
  
      marker.addListener('closeclick', function () {
          infoWindow.marker = null;
      });
  
      marker.addListener('closeclick', function () {
          infoWindow.marker = null;
      });
  }
  
  // This function will loop through the listings and hide them all.
  function clearMarkers() {
      for (var i = 0; i < markers.length; i++) {
          markers[i].setMap(null);
      }
  }
  //deletes all markers in the array by removing references ot them.
  function deleteMarkers() {
      clearMarkers();
      markers = [];
  }
  
  function hideMarkers(array) {
      var validMarker = false;
      for (var i = 0; i < markers.length; i++) {
          for (var j = 0; j < array.length; j++) {
              if (markers[i].name === array[j].title) {
                  validMarker = true;
                  break;
              }
          }
          validMarker ? markers[i].setVisible(true) : markers[i].setVisible(false);
          validMarker = false;
      }
  }
  
  function animateMarker(index, marker) {
      var marker = markers[index] || marker;
      if (marker) {
          marker.setAnimation(google.maps.Animation.BOUNCE);
          window.setTimeout(function () {
              marker.setAnimation(null);
          }, 500);
      }
  }
  
  function showSpecifiedMarker(index) {
      animateMarker(index);
      populateInfoWindow(markers[index], largeInfowindow);
  }
  
  module.exports = {
      markers: markers,
      largeInfowindow: largeInfowindow,
      bounds: bounds,
      initMap: initMap,
      initSearch: initSearch,
      setMarkers: setMarkers,
      populateInfoWindow: populateInfoWindow,
      searchPlace: searchPlace,
      geocoder: geocoder,
      hideMarkers: hideMarkers,
      animateMarker: animateMarker,
      showSpecifiedMarker: showSpecifiedMarker
  };
  
  },{"./mapstyle":4}],4:[function(require,module,exports){
  'use strict';
  
  var styles = [{
      featureType: 'water',
      stylers: [{ color: '#19a0d8' }]
  }, {
      featureType: 'administrative',
      elementType: 'labels.text.stroke',
      stylers: [{ color: '#ffffff' }, { weight: 6 }]
  }, {
      featureType: 'administrative',
      elementType: 'labels.text.fill',
      stylers: [{ color: '#e85113' }]
  }, {
      featureType: 'road.highway',
      elementType: 'geometry.stroke',
      stylers: [{ color: '#efe9e4' }, { lightness: -40 }]
  }, {
      featureType: 'transit.station',
      stylers: [{ weight: 9 }, { hue: '#e85113' }]
  }, {
      featureType: 'road.highway',
      elementType: 'labels.icon',
      stylers: [{ visibility: 'off' }]
  }, {
      featureType: 'water',
      elementType: 'labels.text.stroke',
      stylers: [{ lightness: 100 }]
  }, {
      featureType: 'water',
      elementType: 'labels.text.fill',
      stylers: [{ lightness: -100 }]
  }, {
      featureType: 'poi',
      elementType: 'geometry',
      stylers: [{ visibility: 'on' }, { color: '#f0e4d3' }]
  }, {
      featureType: 'road.highway',
      elementType: 'geometry.fill',
      stylers: [{ color: '#efe9e4' }, { lightness: -25 }]
  }];
  
  module.exports = styles;
  
  },{}],5:[function(require,module,exports){
  /*!
   * jQuery JavaScript Library v3.2.1
   * https://jquery.com/
   *
   * Includes Sizzle.js
   * https://sizzlejs.com/
   *
   * Copyright JS Foundation and other contributors
   * Released under the MIT license
   * https://jquery.org/license
   *
   * Date: 2017-03-20T18:59Z
   */
  ( function( global, factory ) {
  
  	"use strict";
  
  	if ( typeof module === "object" && typeof module.exports === "object" ) {
  
  		// For CommonJS and CommonJS-like environments where a proper `window`
  		// is present, execute the factory and get jQuery.
  		// For environments that do not have a `window` with a `document`
  		// (such as Node.js), expose a factory as module.exports.
  		// This accentuates the need for the creation of a real `window`.
  		// e.g. var jQuery = require("jquery")(window);
  		// See ticket #14549 for more info.
  		module.exports = global.document ?
  			factory( global, true ) :
  			function( w ) {
  				if ( !w.document ) {
  					throw new Error( "jQuery requires a window with a document" );
  				}
  				return factory( w );
  			};
  	} else {
  		factory( global );
  	}
  
  // Pass this if window is not defined yet
  } )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
  
  // Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
  // throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
  // arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
  // enough that all such attempts are guarded in a try block.
  "use strict";
  
  var arr = [];
  
  var document = window.document;
  
  var getProto = Object.getPrototypeOf;
  
  var slice = arr.slice;
  
  var concat = arr.concat;
  
  var push = arr.push;
  
  var indexOf = arr.indexOf;
  
  var class2type = {};
  
  var toString = class2type.toString;
  
  var hasOwn = class2type.hasOwnProperty;
  
  var fnToString = hasOwn.toString;
  
  var ObjectFunctionString = fnToString.call( Object );
  
  var support = {};
  
  
  
  	function DOMEval( code, doc ) {
  		doc = doc || document;
  
  		var script = doc.createElement( "script" );
  
  		script.text = code;
  		doc.head.appendChild( script ).parentNode.removeChild( script );
  	}
  /* global Symbol */
  // Defining this global in .eslintrc.json would create a danger of using the global
  // unguarded in another place, it seems safer to define global only for this module
  
  
  
  var
  	version = "3.2.1",
  
  	// Define a local copy of jQuery
  	jQuery = function( selector, context ) {
  
  		// The jQuery object is actually just the init constructor 'enhanced'
  		// Need init if jQuery is called (just allow error to be thrown if not included)
  		return new jQuery.fn.init( selector, context );
  	},
  
  	// Support: Android <=4.0 only
  	// Make sure we trim BOM and NBSP
  	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
  
  	// Matches dashed string for camelizing
  	rmsPrefix = /^-ms-/,
  	rdashAlpha = /-([a-z])/g,
  
  	// Used by jQuery.camelCase as callback to replace()
  	fcamelCase = function( all, letter ) {
  		return letter.toUpperCase();
  	};
  
  jQuery.fn = jQuery.prototype = {
  
  	// The current version of jQuery being used
  	jquery: version,
  
  	constructor: jQuery,
  
  	// The default length of a jQuery object is 0
  	length: 0,
  
  	toArray: function() {
  		return slice.call( this );
  	},
  
  	// Get the Nth element in the matched element set OR
  	// Get the whole matched element set as a clean array
  	get: function( num ) {
  
  		// Return all the elements in a clean array
  		if ( num == null ) {
  			return slice.call( this );
  		}
  
  		// Return just the one element from the set
  		return num < 0 ? this[ num + this.length ] : this[ num ];
  	},
  
  	// Take an array of elements and push it onto the stack
  	// (returning the new matched element set)
  	pushStack: function( elems ) {
  
  		// Build a new jQuery matched element set
  		var ret = jQuery.merge( this.constructor(), elems );
  
  		// Add the old object onto the stack (as a reference)
  		ret.prevObject = this;
  
  		// Return the newly-formed element set
  		return ret;
  	},
  
  	// Execute a callback for every element in the matched set.
  	each: function( callback ) {
  		return jQuery.each( this, callback );
  	},
  
  	map: function( callback ) {
  		return this.pushStack( jQuery.map( this, function( elem, i ) {
  			return callback.call( elem, i, elem );
  		} ) );
  	},
  
  	slice: function() {
  		return this.pushStack( slice.apply( this, arguments ) );
  	},
  
  	first: function() {
  		return this.eq( 0 );
  	},
  
  	last: function() {
  		return this.eq( -1 );
  	},
  
  	eq: function( i ) {
  		var len = this.length,
  			j = +i + ( i < 0 ? len : 0 );
  		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
  	},
  
  	end: function() {
  		return this.prevObject || this.constructor();
  	},
  
  	// For internal use only.
  	// Behaves like an Array's method, not like a jQuery method.
  	push: push,
  	sort: arr.sort,
  	splice: arr.splice
  };
  
  jQuery.extend = jQuery.fn.extend = function() {
  	var options, name, src, copy, copyIsArray, clone,
  		target = arguments[ 0 ] || {},
  		i = 1,
  		length = arguments.length,
  		deep = false;
  
  	// Handle a deep copy situation
  	if ( typeof target === "boolean" ) {
  		deep = target;
  
  		// Skip the boolean and the target
  		target = arguments[ i ] || {};
  		i++;
  	}
  
  	// Handle case when target is a string or something (possible in deep copy)
  	if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
  		target = {};
  	}
  
  	// Extend jQuery itself if only one argument is passed
  	if ( i === length ) {
  		target = this;
  		i--;
  	}
  
  	for ( ; i < length; i++ ) {
  
  		// Only deal with non-null/undefined values
  		if ( ( options = arguments[ i ] ) != null ) {
  
  			// Extend the base object
  			for ( name in options ) {
  				src = target[ name ];
  				copy = options[ name ];
  
  				// Prevent never-ending loop
  				if ( target === copy ) {
  					continue;
  				}
  
  				// Recurse if we're merging plain objects or arrays
  				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
  					( copyIsArray = Array.isArray( copy ) ) ) ) {
  
  					if ( copyIsArray ) {
  						copyIsArray = false;
  						clone = src && Array.isArray( src ) ? src : [];
  
  					} else {
  						clone = src && jQuery.isPlainObject( src ) ? src : {};
  					}
  
  					// Never move original objects, clone them
  					target[ name ] = jQuery.extend( deep, clone, copy );
  
  				// Don't bring in undefined values
  				} else if ( copy !== undefined ) {
  					target[ name ] = copy;
  				}
  			}
  		}
  	}
  
  	// Return the modified object
  	return target;
  };
  
  jQuery.extend( {
  
  	// Unique for each copy of jQuery on the page
  	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),
  
  	// Assume jQuery is ready without the ready module
  	isReady: true,
  
  	error: function( msg ) {
  		throw new Error( msg );
  	},
  
  	noop: function() {},
  
  	isFunction: function( obj ) {
  		return jQuery.type( obj ) === "function";
  	},
  
  	isWindow: function( obj ) {
  		return obj != null && obj === obj.window;
  	},
  
  	isNumeric: function( obj ) {
  
  		// As of jQuery 3.0, isNumeric is limited to
  		// strings and numbers (primitives or objects)
  		// that can be coerced to finite numbers (gh-2662)
  		var type = jQuery.type( obj );
  		return ( type === "number" || type === "string" ) &&
  
  			// parseFloat NaNs numeric-cast false positives ("")
  			// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
  			// subtraction forces infinities to NaN
  			!isNaN( obj - parseFloat( obj ) );
  	},
  
  	isPlainObject: function( obj ) {
  		var proto, Ctor;
  
  		// Detect obvious negatives
  		// Use toString instead of jQuery.type to catch host objects
  		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
  			return false;
  		}
  
  		proto = getProto( obj );
  
  		// Objects with no prototype (e.g., `Object.create( null )`) are plain
  		if ( !proto ) {
  			return true;
  		}
  
  		// Objects with prototype are plain iff they were constructed by a global Object function
  		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
  		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
  	},
  
  	isEmptyObject: function( obj ) {
  
  		/* eslint-disable no-unused-vars */
  		// See https://github.com/eslint/eslint/issues/6125
  		var name;
  
  		for ( name in obj ) {
  			return false;
  		}
  		return true;
  	},
  
  	type: function( obj ) {
  		if ( obj == null ) {
  			return obj + "";
  		}
  
  		// Support: Android <=2.3 only (functionish RegExp)
  		return typeof obj === "object" || typeof obj === "function" ?
  			class2type[ toString.call( obj ) ] || "object" :
  			typeof obj;
  	},
  
  	// Evaluates a script in a global context
  	globalEval: function( code ) {
  		DOMEval( code );
  	},
  
  	// Convert dashed to camelCase; used by the css and data modules
  	// Support: IE <=9 - 11, Edge 12 - 13
  	// Microsoft forgot to hump their vendor prefix (#9572)
  	camelCase: function( string ) {
  		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
  	},
  
  	each: function( obj, callback ) {
  		var length, i = 0;
  
  		if ( isArrayLike( obj ) ) {
  			length = obj.length;
  			for ( ; i < length; i++ ) {
  				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
  					break;
  				}
  			}
  		} else {
  			for ( i in obj ) {
  				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
  					break;
  				}
  			}
  		}
  
  		return obj;
  	},
  
  	// Support: Android <=4.0 only
  	trim: function( text ) {
  		return text == null ?
  			"" :
  			( text + "" ).replace( rtrim, "" );
  	},
  
  	// results is for internal usage only
  	makeArray: function( arr, results ) {
  		var ret = results || [];
  
  		if ( arr != null ) {
  			if ( isArrayLike( Object( arr ) ) ) {
  				jQuery.merge( ret,
  					typeof arr === "string" ?
  					[ arr ] : arr
  				);
  			} else {
  				push.call( ret, arr );
  			}
  		}
  
  		return ret;
  	},
  
  	inArray: function( elem, arr, i ) {
  		return arr == null ? -1 : indexOf.call( arr, elem, i );
  	},
  
  	// Support: Android <=4.0 only, PhantomJS 1 only
  	// push.apply(_, arraylike) throws on ancient WebKit
  	merge: function( first, second ) {
  		var len = +second.length,
  			j = 0,
  			i = first.length;
  
  		for ( ; j < len; j++ ) {
  			first[ i++ ] = second[ j ];
  		}
  
  		first.length = i;
  
  		return first;
  	},
  
  	grep: function( elems, callback, invert ) {
  		var callbackInverse,
  			matches = [],
  			i = 0,
  			length = elems.length,
  			callbackExpect = !invert;
  
  		// Go through the array, only saving the items
  		// that pass the validator function
  		for ( ; i < length; i++ ) {
  			callbackInverse = !callback( elems[ i ], i );
  			if ( callbackInverse !== callbackExpect ) {
  				matches.push( elems[ i ] );
  			}
  		}
  
  		return matches;
  	},
  
  	// arg is for internal usage only
  	map: function( elems, callback, arg ) {
  		var length, value,
  			i = 0,
  			ret = [];
  
  		// Go through the array, translating each of the items to their new values
  		if ( isArrayLike( elems ) ) {
  			length = elems.length;
  			for ( ; i < length; i++ ) {
  				value = callback( elems[ i ], i, arg );
  
  				if ( value != null ) {
  					ret.push( value );
  				}
  			}
  
  		// Go through every key on the object,
  		} else {
  			for ( i in elems ) {
  				value = callback( elems[ i ], i, arg );
  
  				if ( value != null ) {
  					ret.push( value );
  				}
  			}
  		}
  
  		// Flatten any nested arrays
  		return concat.apply( [], ret );
  	},
  
  	// A global GUID counter for objects
  	guid: 1,
  
  	// Bind a function to a context, optionally partially applying any
  	// arguments.
  	proxy: function( fn, context ) {
  		var tmp, args, proxy;
  
  		if ( typeof context === "string" ) {
  			tmp = fn[ context ];
  			context = fn;
  			fn = tmp;
  		}
  
  		// Quick check to determine if target is callable, in the spec
  		// this throws a TypeError, but we will just return undefined.
  		if ( !jQuery.isFunction( fn ) ) {
  			return undefined;
  		}
  
  		// Simulated bind
  		args = slice.call( arguments, 2 );
  		proxy = function() {
  			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
  		};
  
  		// Set the guid of unique handler to the same of original handler, so it can be removed
  		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
  
  		return proxy;
  	},
  
  	now: Date.now,
  
  	// jQuery.support is not used in Core but other projects attach their
  	// properties to it so it needs to exist.
  	support: support
  } );
  
  if ( typeof Symbol === "function" ) {
  	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
  }
  
  // Populate the class2type map
  jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
  function( i, name ) {
  	class2type[ "[object " + name + "]" ] = name.toLowerCase();
  } );
  
  function isArrayLike( obj ) {
  
  	// Support: real iOS 8.2 only (not reproducible in simulator)
  	// `in` check used to prevent JIT error (gh-2145)
  	// hasOwn isn't used here due to false negatives
  	// regarding Nodelist length in IE
  	var length = !!obj && "length" in obj && obj.length,
  		type = jQuery.type( obj );
  
  	if ( type === "function" || jQuery.isWindow( obj ) ) {
  		return false;
  	}
  
  	return type === "array" || length === 0 ||
  		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
  }
  var Sizzle =
  /*!
   * Sizzle CSS Selector Engine v2.3.3
   * https://sizzlejs.com/
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license
   * http://jquery.org/license
   *
   * Date: 2016-08-08
   */
  (function( window ) {
  
  var i,
  	support,
  	Expr,
  	getText,
  	isXML,
  	tokenize,
  	compile,
  	select,
  	outermostContext,
  	sortInput,
  	hasDuplicate,
  
  	// Local document vars
  	setDocument,
  	document,
  	docElem,
  	documentIsHTML,
  	rbuggyQSA,
  	rbuggyMatches,
  	matches,
  	contains,
  
  	// Instance-specific data
  	expando = "sizzle" + 1 * new Date(),
  	preferredDoc = window.document,
  	dirruns = 0,
  	done = 0,
  	classCache = createCache(),
  	tokenCache = createCache(),
  	compilerCache = createCache(),
  	sortOrder = function( a, b ) {
  		if ( a === b ) {
  			hasDuplicate = true;
  		}
  		return 0;
  	},
  
  	// Instance methods
  	hasOwn = ({}).hasOwnProperty,
  	arr = [],
  	pop = arr.pop,
  	push_native = arr.push,
  	push = arr.push,
  	slice = arr.slice,
  	// Use a stripped-down indexOf as it's faster than native
  	// https://jsperf.com/thor-indexof-vs-for/5
  	indexOf = function( list, elem ) {
  		var i = 0,
  			len = list.length;
  		for ( ; i < len; i++ ) {
  			if ( list[i] === elem ) {
  				return i;
  			}
  		}
  		return -1;
  	},
  
  	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
  
  	// Regular expressions
  
  	// http://www.w3.org/TR/css3-selectors/#whitespace
  	whitespace = "[\\x20\\t\\r\\n\\f]",
  
  	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
  	identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
  
  	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
  	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
  		// Operator (capture 2)
  		"*([*^$|!~]?=)" + whitespace +
  		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
  		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
  		"*\\]",
  
  	pseudos = ":(" + identifier + ")(?:\\((" +
  		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
  		// 1. quoted (capture 3; capture 4 or capture 5)
  		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
  		// 2. simple (capture 6)
  		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
  		// 3. anything else (capture 2)
  		".*" +
  		")\\)|)",
  
  	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
  	rwhitespace = new RegExp( whitespace + "+", "g" ),
  	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),
  
  	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
  	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),
  
  	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),
  
  	rpseudo = new RegExp( pseudos ),
  	ridentifier = new RegExp( "^" + identifier + "$" ),
  
  	matchExpr = {
  		"ID": new RegExp( "^#(" + identifier + ")" ),
  		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
  		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
  		"ATTR": new RegExp( "^" + attributes ),
  		"PSEUDO": new RegExp( "^" + pseudos ),
  		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
  			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
  			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
  		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
  		// For use in libraries implementing .is()
  		// We use this for POS matching in `select`
  		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
  			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
  	},
  
  	rinputs = /^(?:input|select|textarea|button)$/i,
  	rheader = /^h\d$/i,
  
  	rnative = /^[^{]+\{\s*\[native \w/,
  
  	// Easily-parseable/retrievable ID or TAG or CLASS selectors
  	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
  
  	rsibling = /[+~]/,
  
  	// CSS escapes
  	// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
  	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
  	funescape = function( _, escaped, escapedWhitespace ) {
  		var high = "0x" + escaped - 0x10000;
  		// NaN means non-codepoint
  		// Support: Firefox<24
  		// Workaround erroneous numeric interpretation of +"0x"
  		return high !== high || escapedWhitespace ?
  			escaped :
  			high < 0 ?
  				// BMP codepoint
  				String.fromCharCode( high + 0x10000 ) :
  				// Supplemental Plane codepoint (surrogate pair)
  				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
  	},
  
  	// CSS string/identifier serialization
  	// https://drafts.csswg.org/cssom/#common-serializing-idioms
  	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
  	fcssescape = function( ch, asCodePoint ) {
  		if ( asCodePoint ) {
  
  			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
  			if ( ch === "\0" ) {
  				return "\uFFFD";
  			}
  
  			// Control characters and (dependent upon position) numbers get escaped as code points
  			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
  		}
  
  		// Other potentially-special ASCII characters get backslash-escaped
  		return "\\" + ch;
  	},
  
  	// Used for iframes
  	// See setDocument()
  	// Removing the function wrapper causes a "Permission Denied"
  	// error in IE
  	unloadHandler = function() {
  		setDocument();
  	},
  
  	disabledAncestor = addCombinator(
  		function( elem ) {
  			return elem.disabled === true && ("form" in elem || "label" in elem);
  		},
  		{ dir: "parentNode", next: "legend" }
  	);
  
  // Optimize for push.apply( _, NodeList )
  try {
  	push.apply(
  		(arr = slice.call( preferredDoc.childNodes )),
  		preferredDoc.childNodes
  	);
  	// Support: Android<4.0
  	// Detect silently failing push.apply
  	arr[ preferredDoc.childNodes.length ].nodeType;
  } catch ( e ) {
  	push = { apply: arr.length ?
  
  		// Leverage slice if possible
  		function( target, els ) {
  			push_native.apply( target, slice.call(els) );
  		} :
  
  		// Support: IE<9
  		// Otherwise append directly
  		function( target, els ) {
  			var j = target.length,
  				i = 0;
  			// Can't trust NodeList.length
  			while ( (target[j++] = els[i++]) ) {}
  			target.length = j - 1;
  		}
  	};
  }
  
  function Sizzle( selector, context, results, seed ) {
  	var m, i, elem, nid, match, groups, newSelector,
  		newContext = context && context.ownerDocument,
  
  		// nodeType defaults to 9, since context defaults to document
  		nodeType = context ? context.nodeType : 9;
  
  	results = results || [];
  
  	// Return early from calls with invalid selector or context
  	if ( typeof selector !== "string" || !selector ||
  		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {
  
  		return results;
  	}
  
  	// Try to shortcut find operations (as opposed to filters) in HTML documents
  	if ( !seed ) {
  
  		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
  			setDocument( context );
  		}
  		context = context || document;
  
  		if ( documentIsHTML ) {
  
  			// If the selector is sufficiently simple, try using a "get*By*" DOM method
  			// (excepting DocumentFragment context, where the methods don't exist)
  			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {
  
  				// ID selector
  				if ( (m = match[1]) ) {
  
  					// Document context
  					if ( nodeType === 9 ) {
  						if ( (elem = context.getElementById( m )) ) {
  
  							// Support: IE, Opera, Webkit
  							// TODO: identify versions
  							// getElementById can match elements by name instead of ID
  							if ( elem.id === m ) {
  								results.push( elem );
  								return results;
  							}
  						} else {
  							return results;
  						}
  
  					// Element context
  					} else {
  
  						// Support: IE, Opera, Webkit
  						// TODO: identify versions
  						// getElementById can match elements by name instead of ID
  						if ( newContext && (elem = newContext.getElementById( m )) &&
  							contains( context, elem ) &&
  							elem.id === m ) {
  
  							results.push( elem );
  							return results;
  						}
  					}
  
  				// Type selector
  				} else if ( match[2] ) {
  					push.apply( results, context.getElementsByTagName( selector ) );
  					return results;
  
  				// Class selector
  				} else if ( (m = match[3]) && support.getElementsByClassName &&
  					context.getElementsByClassName ) {
  
  					push.apply( results, context.getElementsByClassName( m ) );
  					return results;
  				}
  			}
  
  			// Take advantage of querySelectorAll
  			if ( support.qsa &&
  				!compilerCache[ selector + " " ] &&
  				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
  
  				if ( nodeType !== 1 ) {
  					newContext = context;
  					newSelector = selector;
  
  				// qSA looks outside Element context, which is not what we want
  				// Thanks to Andrew Dupont for this workaround technique
  				// Support: IE <=8
  				// Exclude object elements
  				} else if ( context.nodeName.toLowerCase() !== "object" ) {
  
  					// Capture the context ID, setting it first if necessary
  					if ( (nid = context.getAttribute( "id" )) ) {
  						nid = nid.replace( rcssescape, fcssescape );
  					} else {
  						context.setAttribute( "id", (nid = expando) );
  					}
  
  					// Prefix every selector in the list
  					groups = tokenize( selector );
  					i = groups.length;
  					while ( i-- ) {
  						groups[i] = "#" + nid + " " + toSelector( groups[i] );
  					}
  					newSelector = groups.join( "," );
  
  					// Expand context for sibling selectors
  					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
  						context;
  				}
  
  				if ( newSelector ) {
  					try {
  						push.apply( results,
  							newContext.querySelectorAll( newSelector )
  						);
  						return results;
  					} catch ( qsaError ) {
  					} finally {
  						if ( nid === expando ) {
  							context.removeAttribute( "id" );
  						}
  					}
  				}
  			}
  		}
  	}
  
  	// All others
  	return select( selector.replace( rtrim, "$1" ), context, results, seed );
  }
  
  /**
   * Create key-value caches of limited size
   * @returns {function(string, object)} Returns the Object data after storing it on itself with
   *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
   *	deleting the oldest entry
   */
  function createCache() {
  	var keys = [];
  
  	function cache( key, value ) {
  		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
  		if ( keys.push( key + " " ) > Expr.cacheLength ) {
  			// Only keep the most recent entries
  			delete cache[ keys.shift() ];
  		}
  		return (cache[ key + " " ] = value);
  	}
  	return cache;
  }
  
  /**
   * Mark a function for special use by Sizzle
   * @param {Function} fn The function to mark
   */
  function markFunction( fn ) {
  	fn[ expando ] = true;
  	return fn;
  }
  
  /**
   * Support testing using an element
   * @param {Function} fn Passed the created element and returns a boolean result
   */
  function assert( fn ) {
  	var el = document.createElement("fieldset");
  
  	try {
  		return !!fn( el );
  	} catch (e) {
  		return false;
  	} finally {
  		// Remove from its parent by default
  		if ( el.parentNode ) {
  			el.parentNode.removeChild( el );
  		}
  		// release memory in IE
  		el = null;
  	}
  }
  
  /**
   * Adds the same handler for all of the specified attrs
   * @param {String} attrs Pipe-separated list of attributes
   * @param {Function} handler The method that will be applied
   */
  function addHandle( attrs, handler ) {
  	var arr = attrs.split("|"),
  		i = arr.length;
  
  	while ( i-- ) {
  		Expr.attrHandle[ arr[i] ] = handler;
  	}
  }
  
  /**
   * Checks document order of two siblings
   * @param {Element} a
   * @param {Element} b
   * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
   */
  function siblingCheck( a, b ) {
  	var cur = b && a,
  		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
  			a.sourceIndex - b.sourceIndex;
  
  	// Use IE sourceIndex if available on both nodes
  	if ( diff ) {
  		return diff;
  	}
  
  	// Check if b follows a
  	if ( cur ) {
  		while ( (cur = cur.nextSibling) ) {
  			if ( cur === b ) {
  				return -1;
  			}
  		}
  	}
  
  	return a ? 1 : -1;
  }
  
  /**
   * Returns a function to use in pseudos for input types
   * @param {String} type
   */
  function createInputPseudo( type ) {
  	return function( elem ) {
  		var name = elem.nodeName.toLowerCase();
  		return name === "input" && elem.type === type;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for buttons
   * @param {String} type
   */
  function createButtonPseudo( type ) {
  	return function( elem ) {
  		var name = elem.nodeName.toLowerCase();
  		return (name === "input" || name === "button") && elem.type === type;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for :enabled/:disabled
   * @param {Boolean} disabled true for :disabled; false for :enabled
   */
  function createDisabledPseudo( disabled ) {
  
  	// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
  	return function( elem ) {
  
  		// Only certain elements can match :enabled or :disabled
  		// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
  		// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
  		if ( "form" in elem ) {
  
  			// Check for inherited disabledness on relevant non-disabled elements:
  			// * listed form-associated elements in a disabled fieldset
  			//   https://html.spec.whatwg.org/multipage/forms.html#category-listed
  			//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
  			// * option elements in a disabled optgroup
  			//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
  			// All such elements have a "form" property.
  			if ( elem.parentNode && elem.disabled === false ) {
  
  				// Option elements defer to a parent optgroup if present
  				if ( "label" in elem ) {
  					if ( "label" in elem.parentNode ) {
  						return elem.parentNode.disabled === disabled;
  					} else {
  						return elem.disabled === disabled;
  					}
  				}
  
  				// Support: IE 6 - 11
  				// Use the isDisabled shortcut property to check for disabled fieldset ancestors
  				return elem.isDisabled === disabled ||
  
  					// Where there is no isDisabled, check manually
  					/* jshint -W018 */
  					elem.isDisabled !== !disabled &&
  						disabledAncestor( elem ) === disabled;
  			}
  
  			return elem.disabled === disabled;
  
  		// Try to winnow out elements that can't be disabled before trusting the disabled property.
  		// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
  		// even exist on them, let alone have a boolean value.
  		} else if ( "label" in elem ) {
  			return elem.disabled === disabled;
  		}
  
  		// Remaining elements are neither :enabled nor :disabled
  		return false;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for positionals
   * @param {Function} fn
   */
  function createPositionalPseudo( fn ) {
  	return markFunction(function( argument ) {
  		argument = +argument;
  		return markFunction(function( seed, matches ) {
  			var j,
  				matchIndexes = fn( [], seed.length, argument ),
  				i = matchIndexes.length;
  
  			// Match elements found at the specified indexes
  			while ( i-- ) {
  				if ( seed[ (j = matchIndexes[i]) ] ) {
  					seed[j] = !(matches[j] = seed[j]);
  				}
  			}
  		});
  	});
  }
  
  /**
   * Checks a node for validity as a Sizzle context
   * @param {Element|Object=} context
   * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
   */
  function testContext( context ) {
  	return context && typeof context.getElementsByTagName !== "undefined" && context;
  }
  
  // Expose support vars for convenience
  support = Sizzle.support = {};
  
  /**
   * Detects XML nodes
   * @param {Element|Object} elem An element or a document
   * @returns {Boolean} True iff elem is a non-HTML XML node
   */
  isXML = Sizzle.isXML = function( elem ) {
  	// documentElement is verified for cases where it doesn't yet exist
  	// (such as loading iframes in IE - #4833)
  	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
  	return documentElement ? documentElement.nodeName !== "HTML" : false;
  };
  
  /**
   * Sets document-related variables once based on the current document
   * @param {Element|Object} [doc] An element or document object to use to set the document
   * @returns {Object} Returns the current document
   */
  setDocument = Sizzle.setDocument = function( node ) {
  	var hasCompare, subWindow,
  		doc = node ? node.ownerDocument || node : preferredDoc;
  
  	// Return early if doc is invalid or already selected
  	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
  		return document;
  	}
  
  	// Update global variables
  	document = doc;
  	docElem = document.documentElement;
  	documentIsHTML = !isXML( document );
  
  	// Support: IE 9-11, Edge
  	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
  	if ( preferredDoc !== document &&
  		(subWindow = document.defaultView) && subWindow.top !== subWindow ) {
  
  		// Support: IE 11, Edge
  		if ( subWindow.addEventListener ) {
  			subWindow.addEventListener( "unload", unloadHandler, false );
  
  		// Support: IE 9 - 10 only
  		} else if ( subWindow.attachEvent ) {
  			subWindow.attachEvent( "onunload", unloadHandler );
  		}
  	}
  
  	/* Attributes
  	---------------------------------------------------------------------- */
  
  	// Support: IE<8
  	// Verify that getAttribute really returns attributes and not properties
  	// (excepting IE8 booleans)
  	support.attributes = assert(function( el ) {
  		el.className = "i";
  		return !el.getAttribute("className");
  	});
  
  	/* getElement(s)By*
  	---------------------------------------------------------------------- */
  
  	// Check if getElementsByTagName("*") returns only elements
  	support.getElementsByTagName = assert(function( el ) {
  		el.appendChild( document.createComment("") );
  		return !el.getElementsByTagName("*").length;
  	});
  
  	// Support: IE<9
  	support.getElementsByClassName = rnative.test( document.getElementsByClassName );
  
  	// Support: IE<10
  	// Check if getElementById returns elements by name
  	// The broken getElementById methods don't pick up programmatically-set names,
  	// so use a roundabout getElementsByName test
  	support.getById = assert(function( el ) {
  		docElem.appendChild( el ).id = expando;
  		return !document.getElementsByName || !document.getElementsByName( expando ).length;
  	});
  
  	// ID filter and find
  	if ( support.getById ) {
  		Expr.filter["ID"] = function( id ) {
  			var attrId = id.replace( runescape, funescape );
  			return function( elem ) {
  				return elem.getAttribute("id") === attrId;
  			};
  		};
  		Expr.find["ID"] = function( id, context ) {
  			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
  				var elem = context.getElementById( id );
  				return elem ? [ elem ] : [];
  			}
  		};
  	} else {
  		Expr.filter["ID"] =  function( id ) {
  			var attrId = id.replace( runescape, funescape );
  			return function( elem ) {
  				var node = typeof elem.getAttributeNode !== "undefined" &&
  					elem.getAttributeNode("id");
  				return node && node.value === attrId;
  			};
  		};
  
  		// Support: IE 6 - 7 only
  		// getElementById is not reliable as a find shortcut
  		Expr.find["ID"] = function( id, context ) {
  			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
  				var node, i, elems,
  					elem = context.getElementById( id );
  
  				if ( elem ) {
  
  					// Verify the id attribute
  					node = elem.getAttributeNode("id");
  					if ( node && node.value === id ) {
  						return [ elem ];
  					}
  
  					// Fall back on getElementsByName
  					elems = context.getElementsByName( id );
  					i = 0;
  					while ( (elem = elems[i++]) ) {
  						node = elem.getAttributeNode("id");
  						if ( node && node.value === id ) {
  							return [ elem ];
  						}
  					}
  				}
  
  				return [];
  			}
  		};
  	}
  
  	// Tag
  	Expr.find["TAG"] = support.getElementsByTagName ?
  		function( tag, context ) {
  			if ( typeof context.getElementsByTagName !== "undefined" ) {
  				return context.getElementsByTagName( tag );
  
  			// DocumentFragment nodes don't have gEBTN
  			} else if ( support.qsa ) {
  				return context.querySelectorAll( tag );
  			}
  		} :
  
  		function( tag, context ) {
  			var elem,
  				tmp = [],
  				i = 0,
  				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
  				results = context.getElementsByTagName( tag );
  
  			// Filter out possible comments
  			if ( tag === "*" ) {
  				while ( (elem = results[i++]) ) {
  					if ( elem.nodeType === 1 ) {
  						tmp.push( elem );
  					}
  				}
  
  				return tmp;
  			}
  			return results;
  		};
  
  	// Class
  	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
  		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
  			return context.getElementsByClassName( className );
  		}
  	};
  
  	/* QSA/matchesSelector
  	---------------------------------------------------------------------- */
  
  	// QSA and matchesSelector support
  
  	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
  	rbuggyMatches = [];
  
  	// qSa(:focus) reports false when true (Chrome 21)
  	// We allow this because of a bug in IE8/9 that throws an error
  	// whenever `document.activeElement` is accessed on an iframe
  	// So, we allow :focus to pass through QSA all the time to avoid the IE error
  	// See https://bugs.jquery.com/ticket/13378
  	rbuggyQSA = [];
  
  	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
  		// Build QSA regex
  		// Regex strategy adopted from Diego Perini
  		assert(function( el ) {
  			// Select is set to empty string on purpose
  			// This is to test IE's treatment of not explicitly
  			// setting a boolean content attribute,
  			// since its presence should be enough
  			// https://bugs.jquery.com/ticket/12359
  			docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
  				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
  				"<option selected=''></option></select>";
  
  			// Support: IE8, Opera 11-12.16
  			// Nothing should be selected when empty strings follow ^= or $= or *=
  			// The test attribute must be unknown in Opera but "safe" for WinRT
  			// https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
  			if ( el.querySelectorAll("[msallowcapture^='']").length ) {
  				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
  			}
  
  			// Support: IE8
  			// Boolean attributes and "value" are not treated correctly
  			if ( !el.querySelectorAll("[selected]").length ) {
  				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
  			}
  
  			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
  			if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
  				rbuggyQSA.push("~=");
  			}
  
  			// Webkit/Opera - :checked should return selected option elements
  			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
  			// IE8 throws error here and will not see later tests
  			if ( !el.querySelectorAll(":checked").length ) {
  				rbuggyQSA.push(":checked");
  			}
  
  			// Support: Safari 8+, iOS 8+
  			// https://bugs.webkit.org/show_bug.cgi?id=136851
  			// In-page `selector#id sibling-combinator selector` fails
  			if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
  				rbuggyQSA.push(".#.+[+~]");
  			}
  		});
  
  		assert(function( el ) {
  			el.innerHTML = "<a href='' disabled='disabled'></a>" +
  				"<select disabled='disabled'><option/></select>";
  
  			// Support: Windows 8 Native Apps
  			// The type and name attributes are restricted during .innerHTML assignment
  			var input = document.createElement("input");
  			input.setAttribute( "type", "hidden" );
  			el.appendChild( input ).setAttribute( "name", "D" );
  
  			// Support: IE8
  			// Enforce case-sensitivity of name attribute
  			if ( el.querySelectorAll("[name=d]").length ) {
  				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
  			}
  
  			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
  			// IE8 throws error here and will not see later tests
  			if ( el.querySelectorAll(":enabled").length !== 2 ) {
  				rbuggyQSA.push( ":enabled", ":disabled" );
  			}
  
  			// Support: IE9-11+
  			// IE's :disabled selector does not pick up the children of disabled fieldsets
  			docElem.appendChild( el ).disabled = true;
  			if ( el.querySelectorAll(":disabled").length !== 2 ) {
  				rbuggyQSA.push( ":enabled", ":disabled" );
  			}
  
  			// Opera 10-11 does not throw on post-comma invalid pseudos
  			el.querySelectorAll("*,:x");
  			rbuggyQSA.push(",.*:");
  		});
  	}
  
  	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
  		docElem.webkitMatchesSelector ||
  		docElem.mozMatchesSelector ||
  		docElem.oMatchesSelector ||
  		docElem.msMatchesSelector) )) ) {
  
  		assert(function( el ) {
  			// Check to see if it's possible to do matchesSelector
  			// on a disconnected node (IE 9)
  			support.disconnectedMatch = matches.call( el, "*" );
  
  			// This should fail with an exception
  			// Gecko does not error, returns false instead
  			matches.call( el, "[s!='']:x" );
  			rbuggyMatches.push( "!=", pseudos );
  		});
  	}
  
  	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
  	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );
  
  	/* Contains
  	---------------------------------------------------------------------- */
  	hasCompare = rnative.test( docElem.compareDocumentPosition );
  
  	// Element contains another
  	// Purposefully self-exclusive
  	// As in, an element does not contain itself
  	contains = hasCompare || rnative.test( docElem.contains ) ?
  		function( a, b ) {
  			var adown = a.nodeType === 9 ? a.documentElement : a,
  				bup = b && b.parentNode;
  			return a === bup || !!( bup && bup.nodeType === 1 && (
  				adown.contains ?
  					adown.contains( bup ) :
  					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
  			));
  		} :
  		function( a, b ) {
  			if ( b ) {
  				while ( (b = b.parentNode) ) {
  					if ( b === a ) {
  						return true;
  					}
  				}
  			}
  			return false;
  		};
  
  	/* Sorting
  	---------------------------------------------------------------------- */
  
  	// Document order sorting
  	sortOrder = hasCompare ?
  	function( a, b ) {
  
  		// Flag for duplicate removal
  		if ( a === b ) {
  			hasDuplicate = true;
  			return 0;
  		}
  
  		// Sort on method existence if only one input has compareDocumentPosition
  		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
  		if ( compare ) {
  			return compare;
  		}
  
  		// Calculate position if both inputs belong to the same document
  		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
  			a.compareDocumentPosition( b ) :
  
  			// Otherwise we know they are disconnected
  			1;
  
  		// Disconnected nodes
  		if ( compare & 1 ||
  			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {
  
  			// Choose the first element that is related to our preferred document
  			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
  				return -1;
  			}
  			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
  				return 1;
  			}
  
  			// Maintain original order
  			return sortInput ?
  				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
  				0;
  		}
  
  		return compare & 4 ? -1 : 1;
  	} :
  	function( a, b ) {
  		// Exit early if the nodes are identical
  		if ( a === b ) {
  			hasDuplicate = true;
  			return 0;
  		}
  
  		var cur,
  			i = 0,
  			aup = a.parentNode,
  			bup = b.parentNode,
  			ap = [ a ],
  			bp = [ b ];
  
  		// Parentless nodes are either documents or disconnected
  		if ( !aup || !bup ) {
  			return a === document ? -1 :
  				b === document ? 1 :
  				aup ? -1 :
  				bup ? 1 :
  				sortInput ?
  				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
  				0;
  
  		// If the nodes are siblings, we can do a quick check
  		} else if ( aup === bup ) {
  			return siblingCheck( a, b );
  		}
  
  		// Otherwise we need full lists of their ancestors for comparison
  		cur = a;
  		while ( (cur = cur.parentNode) ) {
  			ap.unshift( cur );
  		}
  		cur = b;
  		while ( (cur = cur.parentNode) ) {
  			bp.unshift( cur );
  		}
  
  		// Walk down the tree looking for a discrepancy
  		while ( ap[i] === bp[i] ) {
  			i++;
  		}
  
  		return i ?
  			// Do a sibling check if the nodes have a common ancestor
  			siblingCheck( ap[i], bp[i] ) :
  
  			// Otherwise nodes in our document sort first
  			ap[i] === preferredDoc ? -1 :
  			bp[i] === preferredDoc ? 1 :
  			0;
  	};
  
  	return document;
  };
  
  Sizzle.matches = function( expr, elements ) {
  	return Sizzle( expr, null, null, elements );
  };
  
  Sizzle.matchesSelector = function( elem, expr ) {
  	// Set document vars if needed
  	if ( ( elem.ownerDocument || elem ) !== document ) {
  		setDocument( elem );
  	}
  
  	// Make sure that attribute selectors are quoted
  	expr = expr.replace( rattributeQuotes, "='$1']" );
  
  	if ( support.matchesSelector && documentIsHTML &&
  		!compilerCache[ expr + " " ] &&
  		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
  		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
  
  		try {
  			var ret = matches.call( elem, expr );
  
  			// IE 9's matchesSelector returns false on disconnected nodes
  			if ( ret || support.disconnectedMatch ||
  					// As well, disconnected nodes are said to be in a document
  					// fragment in IE 9
  					elem.document && elem.document.nodeType !== 11 ) {
  				return ret;
  			}
  		} catch (e) {}
  	}
  
  	return Sizzle( expr, document, null, [ elem ] ).length > 0;
  };
  
  Sizzle.contains = function( context, elem ) {
  	// Set document vars if needed
  	if ( ( context.ownerDocument || context ) !== document ) {
  		setDocument( context );
  	}
  	return contains( context, elem );
  };
  
  Sizzle.attr = function( elem, name ) {
  	// Set document vars if needed
  	if ( ( elem.ownerDocument || elem ) !== document ) {
  		setDocument( elem );
  	}
  
  	var fn = Expr.attrHandle[ name.toLowerCase() ],
  		// Don't get fooled by Object.prototype properties (jQuery #13807)
  		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
  			fn( elem, name, !documentIsHTML ) :
  			undefined;
  
  	return val !== undefined ?
  		val :
  		support.attributes || !documentIsHTML ?
  			elem.getAttribute( name ) :
  			(val = elem.getAttributeNode(name)) && val.specified ?
  				val.value :
  				null;
  };
  
  Sizzle.escape = function( sel ) {
  	return (sel + "").replace( rcssescape, fcssescape );
  };
  
  Sizzle.error = function( msg ) {
  	throw new Error( "Syntax error, unrecognized expression: " + msg );
  };
  
  /**
   * Document sorting and removing duplicates
   * @param {ArrayLike} results
   */
  Sizzle.uniqueSort = function( results ) {
  	var elem,
  		duplicates = [],
  		j = 0,
  		i = 0;
  
  	// Unless we *know* we can detect duplicates, assume their presence
  	hasDuplicate = !support.detectDuplicates;
  	sortInput = !support.sortStable && results.slice( 0 );
  	results.sort( sortOrder );
  
  	if ( hasDuplicate ) {
  		while ( (elem = results[i++]) ) {
  			if ( elem === results[ i ] ) {
  				j = duplicates.push( i );
  			}
  		}
  		while ( j-- ) {
  			results.splice( duplicates[ j ], 1 );
  		}
  	}
  
  	// Clear input after sorting to release objects
  	// See https://github.com/jquery/sizzle/pull/225
  	sortInput = null;
  
  	return results;
  };
  
  /**
   * Utility function for retrieving the text value of an array of DOM nodes
   * @param {Array|Element} elem
   */
  getText = Sizzle.getText = function( elem ) {
  	var node,
  		ret = "",
  		i = 0,
  		nodeType = elem.nodeType;
  
  	if ( !nodeType ) {
  		// If no nodeType, this is expected to be an array
  		while ( (node = elem[i++]) ) {
  			// Do not traverse comment nodes
  			ret += getText( node );
  		}
  	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
  		// Use textContent for elements
  		// innerText usage removed for consistency of new lines (jQuery #11153)
  		if ( typeof elem.textContent === "string" ) {
  			return elem.textContent;
  		} else {
  			// Traverse its children
  			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
  				ret += getText( elem );
  			}
  		}
  	} else if ( nodeType === 3 || nodeType === 4 ) {
  		return elem.nodeValue;
  	}
  	// Do not include comment or processing instruction nodes
  
  	return ret;
  };
  
  Expr = Sizzle.selectors = {
  
  	// Can be adjusted by the user
  	cacheLength: 50,
  
  	createPseudo: markFunction,
  
  	match: matchExpr,
  
  	attrHandle: {},
  
  	find: {},
  
  	relative: {
  		">": { dir: "parentNode", first: true },
  		" ": { dir: "parentNode" },
  		"+": { dir: "previousSibling", first: true },
  		"~": { dir: "previousSibling" }
  	},
  
  	preFilter: {
  		"ATTR": function( match ) {
  			match[1] = match[1].replace( runescape, funescape );
  
  			// Move the given value to match[3] whether quoted or unquoted
  			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );
  
  			if ( match[2] === "~=" ) {
  				match[3] = " " + match[3] + " ";
  			}
  
  			return match.slice( 0, 4 );
  		},
  
  		"CHILD": function( match ) {
  			/* matches from matchExpr["CHILD"]
  				1 type (only|nth|...)
  				2 what (child|of-type)
  				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
  				4 xn-component of xn+y argument ([+-]?\d*n|)
  				5 sign of xn-component
  				6 x of xn-component
  				7 sign of y-component
  				8 y of y-component
  			*/
  			match[1] = match[1].toLowerCase();
  
  			if ( match[1].slice( 0, 3 ) === "nth" ) {
  				// nth-* requires argument
  				if ( !match[3] ) {
  					Sizzle.error( match[0] );
  				}
  
  				// numeric x and y parameters for Expr.filter.CHILD
  				// remember that false/true cast respectively to 0/1
  				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
  				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );
  
  			// other types prohibit arguments
  			} else if ( match[3] ) {
  				Sizzle.error( match[0] );
  			}
  
  			return match;
  		},
  
  		"PSEUDO": function( match ) {
  			var excess,
  				unquoted = !match[6] && match[2];
  
  			if ( matchExpr["CHILD"].test( match[0] ) ) {
  				return null;
  			}
  
  			// Accept quoted arguments as-is
  			if ( match[3] ) {
  				match[2] = match[4] || match[5] || "";
  
  			// Strip excess characters from unquoted arguments
  			} else if ( unquoted && rpseudo.test( unquoted ) &&
  				// Get excess from tokenize (recursively)
  				(excess = tokenize( unquoted, true )) &&
  				// advance to the next closing parenthesis
  				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {
  
  				// excess is a negative index
  				match[0] = match[0].slice( 0, excess );
  				match[2] = unquoted.slice( 0, excess );
  			}
  
  			// Return only captures needed by the pseudo filter method (type and argument)
  			return match.slice( 0, 3 );
  		}
  	},
  
  	filter: {
  
  		"TAG": function( nodeNameSelector ) {
  			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
  			return nodeNameSelector === "*" ?
  				function() { return true; } :
  				function( elem ) {
  					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
  				};
  		},
  
  		"CLASS": function( className ) {
  			var pattern = classCache[ className + " " ];
  
  			return pattern ||
  				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
  				classCache( className, function( elem ) {
  					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
  				});
  		},
  
  		"ATTR": function( name, operator, check ) {
  			return function( elem ) {
  				var result = Sizzle.attr( elem, name );
  
  				if ( result == null ) {
  					return operator === "!=";
  				}
  				if ( !operator ) {
  					return true;
  				}
  
  				result += "";
  
  				return operator === "=" ? result === check :
  					operator === "!=" ? result !== check :
  					operator === "^=" ? check && result.indexOf( check ) === 0 :
  					operator === "*=" ? check && result.indexOf( check ) > -1 :
  					operator === "$=" ? check && result.slice( -check.length ) === check :
  					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
  					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
  					false;
  			};
  		},
  
  		"CHILD": function( type, what, argument, first, last ) {
  			var simple = type.slice( 0, 3 ) !== "nth",
  				forward = type.slice( -4 ) !== "last",
  				ofType = what === "of-type";
  
  			return first === 1 && last === 0 ?
  
  				// Shortcut for :nth-*(n)
  				function( elem ) {
  					return !!elem.parentNode;
  				} :
  
  				function( elem, context, xml ) {
  					var cache, uniqueCache, outerCache, node, nodeIndex, start,
  						dir = simple !== forward ? "nextSibling" : "previousSibling",
  						parent = elem.parentNode,
  						name = ofType && elem.nodeName.toLowerCase(),
  						useCache = !xml && !ofType,
  						diff = false;
  
  					if ( parent ) {
  
  						// :(first|last|only)-(child|of-type)
  						if ( simple ) {
  							while ( dir ) {
  								node = elem;
  								while ( (node = node[ dir ]) ) {
  									if ( ofType ?
  										node.nodeName.toLowerCase() === name :
  										node.nodeType === 1 ) {
  
  										return false;
  									}
  								}
  								// Reverse direction for :only-* (if we haven't yet done so)
  								start = dir = type === "only" && !start && "nextSibling";
  							}
  							return true;
  						}
  
  						start = [ forward ? parent.firstChild : parent.lastChild ];
  
  						// non-xml :nth-child(...) stores cache data on `parent`
  						if ( forward && useCache ) {
  
  							// Seek `elem` from a previously-cached index
  
  							// ...in a gzip-friendly way
  							node = parent;
  							outerCache = node[ expando ] || (node[ expando ] = {});
  
  							// Support: IE <9 only
  							// Defend against cloned attroperties (jQuery gh-1709)
  							uniqueCache = outerCache[ node.uniqueID ] ||
  								(outerCache[ node.uniqueID ] = {});
  
  							cache = uniqueCache[ type ] || [];
  							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
  							diff = nodeIndex && cache[ 2 ];
  							node = nodeIndex && parent.childNodes[ nodeIndex ];
  
  							while ( (node = ++nodeIndex && node && node[ dir ] ||
  
  								// Fallback to seeking `elem` from the start
  								(diff = nodeIndex = 0) || start.pop()) ) {
  
  								// When found, cache indexes on `parent` and break
  								if ( node.nodeType === 1 && ++diff && node === elem ) {
  									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
  									break;
  								}
  							}
  
  						} else {
  							// Use previously-cached element index if available
  							if ( useCache ) {
  								// ...in a gzip-friendly way
  								node = elem;
  								outerCache = node[ expando ] || (node[ expando ] = {});
  
  								// Support: IE <9 only
  								// Defend against cloned attroperties (jQuery gh-1709)
  								uniqueCache = outerCache[ node.uniqueID ] ||
  									(outerCache[ node.uniqueID ] = {});
  
  								cache = uniqueCache[ type ] || [];
  								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
  								diff = nodeIndex;
  							}
  
  							// xml :nth-child(...)
  							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
  							if ( diff === false ) {
  								// Use the same loop as above to seek `elem` from the start
  								while ( (node = ++nodeIndex && node && node[ dir ] ||
  									(diff = nodeIndex = 0) || start.pop()) ) {
  
  									if ( ( ofType ?
  										node.nodeName.toLowerCase() === name :
  										node.nodeType === 1 ) &&
  										++diff ) {
  
  										// Cache the index of each encountered element
  										if ( useCache ) {
  											outerCache = node[ expando ] || (node[ expando ] = {});
  
  											// Support: IE <9 only
  											// Defend against cloned attroperties (jQuery gh-1709)
  											uniqueCache = outerCache[ node.uniqueID ] ||
  												(outerCache[ node.uniqueID ] = {});
  
  											uniqueCache[ type ] = [ dirruns, diff ];
  										}
  
  										if ( node === elem ) {
  											break;
  										}
  									}
  								}
  							}
  						}
  
  						// Incorporate the offset, then check against cycle size
  						diff -= last;
  						return diff === first || ( diff % first === 0 && diff / first >= 0 );
  					}
  				};
  		},
  
  		"PSEUDO": function( pseudo, argument ) {
  			// pseudo-class names are case-insensitive
  			// http://www.w3.org/TR/selectors/#pseudo-classes
  			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
  			// Remember that setFilters inherits from pseudos
  			var args,
  				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
  					Sizzle.error( "unsupported pseudo: " + pseudo );
  
  			// The user may use createPseudo to indicate that
  			// arguments are needed to create the filter function
  			// just as Sizzle does
  			if ( fn[ expando ] ) {
  				return fn( argument );
  			}
  
  			// But maintain support for old signatures
  			if ( fn.length > 1 ) {
  				args = [ pseudo, pseudo, "", argument ];
  				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
  					markFunction(function( seed, matches ) {
  						var idx,
  							matched = fn( seed, argument ),
  							i = matched.length;
  						while ( i-- ) {
  							idx = indexOf( seed, matched[i] );
  							seed[ idx ] = !( matches[ idx ] = matched[i] );
  						}
  					}) :
  					function( elem ) {
  						return fn( elem, 0, args );
  					};
  			}
  
  			return fn;
  		}
  	},
  
  	pseudos: {
  		// Potentially complex pseudos
  		"not": markFunction(function( selector ) {
  			// Trim the selector passed to compile
  			// to avoid treating leading and trailing
  			// spaces as combinators
  			var input = [],
  				results = [],
  				matcher = compile( selector.replace( rtrim, "$1" ) );
  
  			return matcher[ expando ] ?
  				markFunction(function( seed, matches, context, xml ) {
  					var elem,
  						unmatched = matcher( seed, null, xml, [] ),
  						i = seed.length;
  
  					// Match elements unmatched by `matcher`
  					while ( i-- ) {
  						if ( (elem = unmatched[i]) ) {
  							seed[i] = !(matches[i] = elem);
  						}
  					}
  				}) :
  				function( elem, context, xml ) {
  					input[0] = elem;
  					matcher( input, null, xml, results );
  					// Don't keep the element (issue #299)
  					input[0] = null;
  					return !results.pop();
  				};
  		}),
  
  		"has": markFunction(function( selector ) {
  			return function( elem ) {
  				return Sizzle( selector, elem ).length > 0;
  			};
  		}),
  
  		"contains": markFunction(function( text ) {
  			text = text.replace( runescape, funescape );
  			return function( elem ) {
  				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
  			};
  		}),
  
  		// "Whether an element is represented by a :lang() selector
  		// is based solely on the element's language value
  		// being equal to the identifier C,
  		// or beginning with the identifier C immediately followed by "-".
  		// The matching of C against the element's language value is performed case-insensitively.
  		// The identifier C does not have to be a valid language name."
  		// http://www.w3.org/TR/selectors/#lang-pseudo
  		"lang": markFunction( function( lang ) {
  			// lang value must be a valid identifier
  			if ( !ridentifier.test(lang || "") ) {
  				Sizzle.error( "unsupported lang: " + lang );
  			}
  			lang = lang.replace( runescape, funescape ).toLowerCase();
  			return function( elem ) {
  				var elemLang;
  				do {
  					if ( (elemLang = documentIsHTML ?
  						elem.lang :
  						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {
  
  						elemLang = elemLang.toLowerCase();
  						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
  					}
  				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
  				return false;
  			};
  		}),
  
  		// Miscellaneous
  		"target": function( elem ) {
  			var hash = window.location && window.location.hash;
  			return hash && hash.slice( 1 ) === elem.id;
  		},
  
  		"root": function( elem ) {
  			return elem === docElem;
  		},
  
  		"focus": function( elem ) {
  			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
  		},
  
  		// Boolean properties
  		"enabled": createDisabledPseudo( false ),
  		"disabled": createDisabledPseudo( true ),
  
  		"checked": function( elem ) {
  			// In CSS3, :checked should return both checked and selected elements
  			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
  			var nodeName = elem.nodeName.toLowerCase();
  			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
  		},
  
  		"selected": function( elem ) {
  			// Accessing this property makes selected-by-default
  			// options in Safari work properly
  			if ( elem.parentNode ) {
  				elem.parentNode.selectedIndex;
  			}
  
  			return elem.selected === true;
  		},
  
  		// Contents
  		"empty": function( elem ) {
  			// http://www.w3.org/TR/selectors/#empty-pseudo
  			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
  			//   but not by others (comment: 8; processing instruction: 7; etc.)
  			// nodeType < 6 works because attributes (2) do not appear as children
  			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
  				if ( elem.nodeType < 6 ) {
  					return false;
  				}
  			}
  			return true;
  		},
  
  		"parent": function( elem ) {
  			return !Expr.pseudos["empty"]( elem );
  		},
  
  		// Element/input types
  		"header": function( elem ) {
  			return rheader.test( elem.nodeName );
  		},
  
  		"input": function( elem ) {
  			return rinputs.test( elem.nodeName );
  		},
  
  		"button": function( elem ) {
  			var name = elem.nodeName.toLowerCase();
  			return name === "input" && elem.type === "button" || name === "button";
  		},
  
  		"text": function( elem ) {
  			var attr;
  			return elem.nodeName.toLowerCase() === "input" &&
  				elem.type === "text" &&
  
  				// Support: IE<8
  				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
  				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
  		},
  
  		// Position-in-collection
  		"first": createPositionalPseudo(function() {
  			return [ 0 ];
  		}),
  
  		"last": createPositionalPseudo(function( matchIndexes, length ) {
  			return [ length - 1 ];
  		}),
  
  		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
  			return [ argument < 0 ? argument + length : argument ];
  		}),
  
  		"even": createPositionalPseudo(function( matchIndexes, length ) {
  			var i = 0;
  			for ( ; i < length; i += 2 ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		}),
  
  		"odd": createPositionalPseudo(function( matchIndexes, length ) {
  			var i = 1;
  			for ( ; i < length; i += 2 ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		}),
  
  		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
  			var i = argument < 0 ? argument + length : argument;
  			for ( ; --i >= 0; ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		}),
  
  		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
  			var i = argument < 0 ? argument + length : argument;
  			for ( ; ++i < length; ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		})
  	}
  };
  
  Expr.pseudos["nth"] = Expr.pseudos["eq"];
  
  // Add button/input type pseudos
  for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
  	Expr.pseudos[ i ] = createInputPseudo( i );
  }
  for ( i in { submit: true, reset: true } ) {
  	Expr.pseudos[ i ] = createButtonPseudo( i );
  }
  
  // Easy API for creating new setFilters
  function setFilters() {}
  setFilters.prototype = Expr.filters = Expr.pseudos;
  Expr.setFilters = new setFilters();
  
  tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
  	var matched, match, tokens, type,
  		soFar, groups, preFilters,
  		cached = tokenCache[ selector + " " ];
  
  	if ( cached ) {
  		return parseOnly ? 0 : cached.slice( 0 );
  	}
  
  	soFar = selector;
  	groups = [];
  	preFilters = Expr.preFilter;
  
  	while ( soFar ) {
  
  		// Comma and first run
  		if ( !matched || (match = rcomma.exec( soFar )) ) {
  			if ( match ) {
  				// Don't consume trailing commas as valid
  				soFar = soFar.slice( match[0].length ) || soFar;
  			}
  			groups.push( (tokens = []) );
  		}
  
  		matched = false;
  
  		// Combinators
  		if ( (match = rcombinators.exec( soFar )) ) {
  			matched = match.shift();
  			tokens.push({
  				value: matched,
  				// Cast descendant combinators to space
  				type: match[0].replace( rtrim, " " )
  			});
  			soFar = soFar.slice( matched.length );
  		}
  
  		// Filters
  		for ( type in Expr.filter ) {
  			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
  				(match = preFilters[ type ]( match ))) ) {
  				matched = match.shift();
  				tokens.push({
  					value: matched,
  					type: type,
  					matches: match
  				});
  				soFar = soFar.slice( matched.length );
  			}
  		}
  
  		if ( !matched ) {
  			break;
  		}
  	}
  
  	// Return the length of the invalid excess
  	// if we're just parsing
  	// Otherwise, throw an error or return tokens
  	return parseOnly ?
  		soFar.length :
  		soFar ?
  			Sizzle.error( selector ) :
  			// Cache the tokens
  			tokenCache( selector, groups ).slice( 0 );
  };
  
  function toSelector( tokens ) {
  	var i = 0,
  		len = tokens.length,
  		selector = "";
  	for ( ; i < len; i++ ) {
  		selector += tokens[i].value;
  	}
  	return selector;
  }
  
  function addCombinator( matcher, combinator, base ) {
  	var dir = combinator.dir,
  		skip = combinator.next,
  		key = skip || dir,
  		checkNonElements = base && key === "parentNode",
  		doneName = done++;
  
  	return combinator.first ?
  		// Check against closest ancestor/preceding element
  		function( elem, context, xml ) {
  			while ( (elem = elem[ dir ]) ) {
  				if ( elem.nodeType === 1 || checkNonElements ) {
  					return matcher( elem, context, xml );
  				}
  			}
  			return false;
  		} :
  
  		// Check against all ancestor/preceding elements
  		function( elem, context, xml ) {
  			var oldCache, uniqueCache, outerCache,
  				newCache = [ dirruns, doneName ];
  
  			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
  			if ( xml ) {
  				while ( (elem = elem[ dir ]) ) {
  					if ( elem.nodeType === 1 || checkNonElements ) {
  						if ( matcher( elem, context, xml ) ) {
  							return true;
  						}
  					}
  				}
  			} else {
  				while ( (elem = elem[ dir ]) ) {
  					if ( elem.nodeType === 1 || checkNonElements ) {
  						outerCache = elem[ expando ] || (elem[ expando ] = {});
  
  						// Support: IE <9 only
  						// Defend against cloned attroperties (jQuery gh-1709)
  						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});
  
  						if ( skip && skip === elem.nodeName.toLowerCase() ) {
  							elem = elem[ dir ] || elem;
  						} else if ( (oldCache = uniqueCache[ key ]) &&
  							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {
  
  							// Assign to newCache so results back-propagate to previous elements
  							return (newCache[ 2 ] = oldCache[ 2 ]);
  						} else {
  							// Reuse newcache so results back-propagate to previous elements
  							uniqueCache[ key ] = newCache;
  
  							// A match means we're done; a fail means we have to keep checking
  							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
  								return true;
  							}
  						}
  					}
  				}
  			}
  			return false;
  		};
  }
  
  function elementMatcher( matchers ) {
  	return matchers.length > 1 ?
  		function( elem, context, xml ) {
  			var i = matchers.length;
  			while ( i-- ) {
  				if ( !matchers[i]( elem, context, xml ) ) {
  					return false;
  				}
  			}
  			return true;
  		} :
  		matchers[0];
  }
  
  function multipleContexts( selector, contexts, results ) {
  	var i = 0,
  		len = contexts.length;
  	for ( ; i < len; i++ ) {
  		Sizzle( selector, contexts[i], results );
  	}
  	return results;
  }
  
  function condense( unmatched, map, filter, context, xml ) {
  	var elem,
  		newUnmatched = [],
  		i = 0,
  		len = unmatched.length,
  		mapped = map != null;
  
  	for ( ; i < len; i++ ) {
  		if ( (elem = unmatched[i]) ) {
  			if ( !filter || filter( elem, context, xml ) ) {
  				newUnmatched.push( elem );
  				if ( mapped ) {
  					map.push( i );
  				}
  			}
  		}
  	}
  
  	return newUnmatched;
  }
  
  function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
  	if ( postFilter && !postFilter[ expando ] ) {
  		postFilter = setMatcher( postFilter );
  	}
  	if ( postFinder && !postFinder[ expando ] ) {
  		postFinder = setMatcher( postFinder, postSelector );
  	}
  	return markFunction(function( seed, results, context, xml ) {
  		var temp, i, elem,
  			preMap = [],
  			postMap = [],
  			preexisting = results.length,
  
  			// Get initial elements from seed or context
  			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),
  
  			// Prefilter to get matcher input, preserving a map for seed-results synchronization
  			matcherIn = preFilter && ( seed || !selector ) ?
  				condense( elems, preMap, preFilter, context, xml ) :
  				elems,
  
  			matcherOut = matcher ?
  				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
  				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
  
  					// ...intermediate processing is necessary
  					[] :
  
  					// ...otherwise use results directly
  					results :
  				matcherIn;
  
  		// Find primary matches
  		if ( matcher ) {
  			matcher( matcherIn, matcherOut, context, xml );
  		}
  
  		// Apply postFilter
  		if ( postFilter ) {
  			temp = condense( matcherOut, postMap );
  			postFilter( temp, [], context, xml );
  
  			// Un-match failing elements by moving them back to matcherIn
  			i = temp.length;
  			while ( i-- ) {
  				if ( (elem = temp[i]) ) {
  					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
  				}
  			}
  		}
  
  		if ( seed ) {
  			if ( postFinder || preFilter ) {
  				if ( postFinder ) {
  					// Get the final matcherOut by condensing this intermediate into postFinder contexts
  					temp = [];
  					i = matcherOut.length;
  					while ( i-- ) {
  						if ( (elem = matcherOut[i]) ) {
  							// Restore matcherIn since elem is not yet a final match
  							temp.push( (matcherIn[i] = elem) );
  						}
  					}
  					postFinder( null, (matcherOut = []), temp, xml );
  				}
  
  				// Move matched elements from seed to results to keep them synchronized
  				i = matcherOut.length;
  				while ( i-- ) {
  					if ( (elem = matcherOut[i]) &&
  						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {
  
  						seed[temp] = !(results[temp] = elem);
  					}
  				}
  			}
  
  		// Add elements to results, through postFinder if defined
  		} else {
  			matcherOut = condense(
  				matcherOut === results ?
  					matcherOut.splice( preexisting, matcherOut.length ) :
  					matcherOut
  			);
  			if ( postFinder ) {
  				postFinder( null, results, matcherOut, xml );
  			} else {
  				push.apply( results, matcherOut );
  			}
  		}
  	});
  }
  
  function matcherFromTokens( tokens ) {
  	var checkContext, matcher, j,
  		len = tokens.length,
  		leadingRelative = Expr.relative[ tokens[0].type ],
  		implicitRelative = leadingRelative || Expr.relative[" "],
  		i = leadingRelative ? 1 : 0,
  
  		// The foundational matcher ensures that elements are reachable from top-level context(s)
  		matchContext = addCombinator( function( elem ) {
  			return elem === checkContext;
  		}, implicitRelative, true ),
  		matchAnyContext = addCombinator( function( elem ) {
  			return indexOf( checkContext, elem ) > -1;
  		}, implicitRelative, true ),
  		matchers = [ function( elem, context, xml ) {
  			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
  				(checkContext = context).nodeType ?
  					matchContext( elem, context, xml ) :
  					matchAnyContext( elem, context, xml ) );
  			// Avoid hanging onto element (issue #299)
  			checkContext = null;
  			return ret;
  		} ];
  
  	for ( ; i < len; i++ ) {
  		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
  			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
  		} else {
  			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );
  
  			// Return special upon seeing a positional matcher
  			if ( matcher[ expando ] ) {
  				// Find the next relative operator (if any) for proper handling
  				j = ++i;
  				for ( ; j < len; j++ ) {
  					if ( Expr.relative[ tokens[j].type ] ) {
  						break;
  					}
  				}
  				return setMatcher(
  					i > 1 && elementMatcher( matchers ),
  					i > 1 && toSelector(
  						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
  						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
  					).replace( rtrim, "$1" ),
  					matcher,
  					i < j && matcherFromTokens( tokens.slice( i, j ) ),
  					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
  					j < len && toSelector( tokens )
  				);
  			}
  			matchers.push( matcher );
  		}
  	}
  
  	return elementMatcher( matchers );
  }
  
  function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
  	var bySet = setMatchers.length > 0,
  		byElement = elementMatchers.length > 0,
  		superMatcher = function( seed, context, xml, results, outermost ) {
  			var elem, j, matcher,
  				matchedCount = 0,
  				i = "0",
  				unmatched = seed && [],
  				setMatched = [],
  				contextBackup = outermostContext,
  				// We must always have either seed elements or outermost context
  				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
  				// Use integer dirruns iff this is the outermost matcher
  				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
  				len = elems.length;
  
  			if ( outermost ) {
  				outermostContext = context === document || context || outermost;
  			}
  
  			// Add elements passing elementMatchers directly to results
  			// Support: IE<9, Safari
  			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
  			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
  				if ( byElement && elem ) {
  					j = 0;
  					if ( !context && elem.ownerDocument !== document ) {
  						setDocument( elem );
  						xml = !documentIsHTML;
  					}
  					while ( (matcher = elementMatchers[j++]) ) {
  						if ( matcher( elem, context || document, xml) ) {
  							results.push( elem );
  							break;
  						}
  					}
  					if ( outermost ) {
  						dirruns = dirrunsUnique;
  					}
  				}
  
  				// Track unmatched elements for set filters
  				if ( bySet ) {
  					// They will have gone through all possible matchers
  					if ( (elem = !matcher && elem) ) {
  						matchedCount--;
  					}
  
  					// Lengthen the array for every element, matched or not
  					if ( seed ) {
  						unmatched.push( elem );
  					}
  				}
  			}
  
  			// `i` is now the count of elements visited above, and adding it to `matchedCount`
  			// makes the latter nonnegative.
  			matchedCount += i;
  
  			// Apply set filters to unmatched elements
  			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
  			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
  			// no element matchers and no seed.
  			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
  			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
  			// numerically zero.
  			if ( bySet && i !== matchedCount ) {
  				j = 0;
  				while ( (matcher = setMatchers[j++]) ) {
  					matcher( unmatched, setMatched, context, xml );
  				}
  
  				if ( seed ) {
  					// Reintegrate element matches to eliminate the need for sorting
  					if ( matchedCount > 0 ) {
  						while ( i-- ) {
  							if ( !(unmatched[i] || setMatched[i]) ) {
  								setMatched[i] = pop.call( results );
  							}
  						}
  					}
  
  					// Discard index placeholder values to get only actual matches
  					setMatched = condense( setMatched );
  				}
  
  				// Add matches to results
  				push.apply( results, setMatched );
  
  				// Seedless set matches succeeding multiple successful matchers stipulate sorting
  				if ( outermost && !seed && setMatched.length > 0 &&
  					( matchedCount + setMatchers.length ) > 1 ) {
  
  					Sizzle.uniqueSort( results );
  				}
  			}
  
  			// Override manipulation of globals by nested matchers
  			if ( outermost ) {
  				dirruns = dirrunsUnique;
  				outermostContext = contextBackup;
  			}
  
  			return unmatched;
  		};
  
  	return bySet ?
  		markFunction( superMatcher ) :
  		superMatcher;
  }
  
  compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
  	var i,
  		setMatchers = [],
  		elementMatchers = [],
  		cached = compilerCache[ selector + " " ];
  
  	if ( !cached ) {
  		// Generate a function of recursive functions that can be used to check each element
  		if ( !match ) {
  			match = tokenize( selector );
  		}
  		i = match.length;
  		while ( i-- ) {
  			cached = matcherFromTokens( match[i] );
  			if ( cached[ expando ] ) {
  				setMatchers.push( cached );
  			} else {
  				elementMatchers.push( cached );
  			}
  		}
  
  		// Cache the compiled function
  		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
  
  		// Save selector and tokenization
  		cached.selector = selector;
  	}
  	return cached;
  };
  
  /**
   * A low-level selection function that works with Sizzle's compiled
   *  selector functions
   * @param {String|Function} selector A selector or a pre-compiled
   *  selector function built with Sizzle.compile
   * @param {Element} context
   * @param {Array} [results]
   * @param {Array} [seed] A set of elements to match against
   */
  select = Sizzle.select = function( selector, context, results, seed ) {
  	var i, tokens, token, type, find,
  		compiled = typeof selector === "function" && selector,
  		match = !seed && tokenize( (selector = compiled.selector || selector) );
  
  	results = results || [];
  
  	// Try to minimize operations if there is only one selector in the list and no seed
  	// (the latter of which guarantees us context)
  	if ( match.length === 1 ) {
  
  		// Reduce context if the leading compound selector is an ID
  		tokens = match[0] = match[0].slice( 0 );
  		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
  				context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) {
  
  			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
  			if ( !context ) {
  				return results;
  
  			// Precompiled matchers will still verify ancestry, so step up a level
  			} else if ( compiled ) {
  				context = context.parentNode;
  			}
  
  			selector = selector.slice( tokens.shift().value.length );
  		}
  
  		// Fetch a seed set for right-to-left matching
  		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
  		while ( i-- ) {
  			token = tokens[i];
  
  			// Abort if we hit a combinator
  			if ( Expr.relative[ (type = token.type) ] ) {
  				break;
  			}
  			if ( (find = Expr.find[ type ]) ) {
  				// Search, expanding context for leading sibling combinators
  				if ( (seed = find(
  					token.matches[0].replace( runescape, funescape ),
  					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
  				)) ) {
  
  					// If seed is empty or no tokens remain, we can return early
  					tokens.splice( i, 1 );
  					selector = seed.length && toSelector( tokens );
  					if ( !selector ) {
  						push.apply( results, seed );
  						return results;
  					}
  
  					break;
  				}
  			}
  		}
  	}
  
  	// Compile and execute a filtering function if one is not provided
  	// Provide `match` to avoid retokenization if we modified the selector above
  	( compiled || compile( selector, match ) )(
  		seed,
  		context,
  		!documentIsHTML,
  		results,
  		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
  	);
  	return results;
  };
  
  // One-time assignments
  
  // Sort stability
  support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;
  
  // Support: Chrome 14-35+
  // Always assume duplicates if they aren't passed to the comparison function
  support.detectDuplicates = !!hasDuplicate;
  
  // Initialize against the default document
  setDocument();
  
  // Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
  // Detached nodes confoundingly follow *each other*
  support.sortDetached = assert(function( el ) {
  	// Should return 1, but returns 4 (following)
  	return el.compareDocumentPosition( document.createElement("fieldset") ) & 1;
  });
  
  // Support: IE<8
  // Prevent attribute/property "interpolation"
  // https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
  if ( !assert(function( el ) {
  	el.innerHTML = "<a href='#'></a>";
  	return el.firstChild.getAttribute("href") === "#" ;
  }) ) {
  	addHandle( "type|href|height|width", function( elem, name, isXML ) {
  		if ( !isXML ) {
  			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
  		}
  	});
  }
  
  // Support: IE<9
  // Use defaultValue in place of getAttribute("value")
  if ( !support.attributes || !assert(function( el ) {
  	el.innerHTML = "<input/>";
  	el.firstChild.setAttribute( "value", "" );
  	return el.firstChild.getAttribute( "value" ) === "";
  }) ) {
  	addHandle( "value", function( elem, name, isXML ) {
  		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
  			return elem.defaultValue;
  		}
  	});
  }
  
  // Support: IE<9
  // Use getAttributeNode to fetch booleans when getAttribute lies
  if ( !assert(function( el ) {
  	return el.getAttribute("disabled") == null;
  }) ) {
  	addHandle( booleans, function( elem, name, isXML ) {
  		var val;
  		if ( !isXML ) {
  			return elem[ name ] === true ? name.toLowerCase() :
  					(val = elem.getAttributeNode( name )) && val.specified ?
  					val.value :
  				null;
  		}
  	});
  }
  
  return Sizzle;
  
  })( window );
  
  
  
  jQuery.find = Sizzle;
  jQuery.expr = Sizzle.selectors;
  
  // Deprecated
  jQuery.expr[ ":" ] = jQuery.expr.pseudos;
  jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
  jQuery.text = Sizzle.getText;
  jQuery.isXMLDoc = Sizzle.isXML;
  jQuery.contains = Sizzle.contains;
  jQuery.escapeSelector = Sizzle.escape;
  
  
  
  
  var dir = function( elem, dir, until ) {
  	var matched = [],
  		truncate = until !== undefined;
  
  	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
  		if ( elem.nodeType === 1 ) {
  			if ( truncate && jQuery( elem ).is( until ) ) {
  				break;
  			}
  			matched.push( elem );
  		}
  	}
  	return matched;
  };
  
  
  var siblings = function( n, elem ) {
  	var matched = [];
  
  	for ( ; n; n = n.nextSibling ) {
  		if ( n.nodeType === 1 && n !== elem ) {
  			matched.push( n );
  		}
  	}
  
  	return matched;
  };
  
  
  var rneedsContext = jQuery.expr.match.needsContext;
  
  
  
  function nodeName( elem, name ) {
  
    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
  
  };
  var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
  
  
  
  var risSimple = /^.[^:#\[\.,]*$/;
  
  // Implement the identical functionality for filter and not
  function winnow( elements, qualifier, not ) {
  	if ( jQuery.isFunction( qualifier ) ) {
  		return jQuery.grep( elements, function( elem, i ) {
  			return !!qualifier.call( elem, i, elem ) !== not;
  		} );
  	}
  
  	// Single element
  	if ( qualifier.nodeType ) {
  		return jQuery.grep( elements, function( elem ) {
  			return ( elem === qualifier ) !== not;
  		} );
  	}
  
  	// Arraylike of elements (jQuery, arguments, Array)
  	if ( typeof qualifier !== "string" ) {
  		return jQuery.grep( elements, function( elem ) {
  			return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
  		} );
  	}
  
  	// Simple selector that can be filtered directly, removing non-Elements
  	if ( risSimple.test( qualifier ) ) {
  		return jQuery.filter( qualifier, elements, not );
  	}
  
  	// Complex selector, compare the two sets, removing non-Elements
  	qualifier = jQuery.filter( qualifier, elements );
  	return jQuery.grep( elements, function( elem ) {
  		return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
  	} );
  }
  
  jQuery.filter = function( expr, elems, not ) {
  	var elem = elems[ 0 ];
  
  	if ( not ) {
  		expr = ":not(" + expr + ")";
  	}
  
  	if ( elems.length === 1 && elem.nodeType === 1 ) {
  		return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
  	}
  
  	return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
  		return elem.nodeType === 1;
  	} ) );
  };
  
  jQuery.fn.extend( {
  	find: function( selector ) {
  		var i, ret,
  			len = this.length,
  			self = this;
  
  		if ( typeof selector !== "string" ) {
  			return this.pushStack( jQuery( selector ).filter( function() {
  				for ( i = 0; i < len; i++ ) {
  					if ( jQuery.contains( self[ i ], this ) ) {
  						return true;
  					}
  				}
  			} ) );
  		}
  
  		ret = this.pushStack( [] );
  
  		for ( i = 0; i < len; i++ ) {
  			jQuery.find( selector, self[ i ], ret );
  		}
  
  		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
  	},
  	filter: function( selector ) {
  		return this.pushStack( winnow( this, selector || [], false ) );
  	},
  	not: function( selector ) {
  		return this.pushStack( winnow( this, selector || [], true ) );
  	},
  	is: function( selector ) {
  		return !!winnow(
  			this,
  
  			// If this is a positional/relative selector, check membership in the returned set
  			// so $("p:first").is("p:last") won't return true for a doc with two "p".
  			typeof selector === "string" && rneedsContext.test( selector ) ?
  				jQuery( selector ) :
  				selector || [],
  			false
  		).length;
  	}
  } );
  
  
  // Initialize a jQuery object
  
  
  // A central reference to the root jQuery(document)
  var rootjQuery,
  
  	// A simple way to check for HTML strings
  	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
  	// Strict HTML recognition (#11290: must start with <)
  	// Shortcut simple #id case for speed
  	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
  
  	init = jQuery.fn.init = function( selector, context, root ) {
  		var match, elem;
  
  		// HANDLE: $(""), $(null), $(undefined), $(false)
  		if ( !selector ) {
  			return this;
  		}
  
  		// Method init() accepts an alternate rootjQuery
  		// so migrate can support jQuery.sub (gh-2101)
  		root = root || rootjQuery;
  
  		// Handle HTML strings
  		if ( typeof selector === "string" ) {
  			if ( selector[ 0 ] === "<" &&
  				selector[ selector.length - 1 ] === ">" &&
  				selector.length >= 3 ) {
  
  				// Assume that strings that start and end with <> are HTML and skip the regex check
  				match = [ null, selector, null ];
  
  			} else {
  				match = rquickExpr.exec( selector );
  			}
  
  			// Match html or make sure no context is specified for #id
  			if ( match && ( match[ 1 ] || !context ) ) {
  
  				// HANDLE: $(html) -> $(array)
  				if ( match[ 1 ] ) {
  					context = context instanceof jQuery ? context[ 0 ] : context;
  
  					// Option to run scripts is true for back-compat
  					// Intentionally let the error be thrown if parseHTML is not present
  					jQuery.merge( this, jQuery.parseHTML(
  						match[ 1 ],
  						context && context.nodeType ? context.ownerDocument || context : document,
  						true
  					) );
  
  					// HANDLE: $(html, props)
  					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
  						for ( match in context ) {
  
  							// Properties of context are called as methods if possible
  							if ( jQuery.isFunction( this[ match ] ) ) {
  								this[ match ]( context[ match ] );
  
  							// ...and otherwise set as attributes
  							} else {
  								this.attr( match, context[ match ] );
  							}
  						}
  					}
  
  					return this;
  
  				// HANDLE: $(#id)
  				} else {
  					elem = document.getElementById( match[ 2 ] );
  
  					if ( elem ) {
  
  						// Inject the element directly into the jQuery object
  						this[ 0 ] = elem;
  						this.length = 1;
  					}
  					return this;
  				}
  
  			// HANDLE: $(expr, $(...))
  			} else if ( !context || context.jquery ) {
  				return ( context || root ).find( selector );
  
  			// HANDLE: $(expr, context)
  			// (which is just equivalent to: $(context).find(expr)
  			} else {
  				return this.constructor( context ).find( selector );
  			}
  
  		// HANDLE: $(DOMElement)
  		} else if ( selector.nodeType ) {
  			this[ 0 ] = selector;
  			this.length = 1;
  			return this;
  
  		// HANDLE: $(function)
  		// Shortcut for document ready
  		} else if ( jQuery.isFunction( selector ) ) {
  			return root.ready !== undefined ?
  				root.ready( selector ) :
  
  				// Execute immediately if ready is not present
  				selector( jQuery );
  		}
  
  		return jQuery.makeArray( selector, this );
  	};
  
  // Give the init function the jQuery prototype for later instantiation
  init.prototype = jQuery.fn;
  
  // Initialize central reference
  rootjQuery = jQuery( document );
  
  
  var rparentsprev = /^(?:parents|prev(?:Until|All))/,
  
  	// Methods guaranteed to produce a unique set when starting from a unique set
  	guaranteedUnique = {
  		children: true,
  		contents: true,
  		next: true,
  		prev: true
  	};
  
  jQuery.fn.extend( {
  	has: function( target ) {
  		var targets = jQuery( target, this ),
  			l = targets.length;
  
  		return this.filter( function() {
  			var i = 0;
  			for ( ; i < l; i++ ) {
  				if ( jQuery.contains( this, targets[ i ] ) ) {
  					return true;
  				}
  			}
  		} );
  	},
  
  	closest: function( selectors, context ) {
  		var cur,
  			i = 0,
  			l = this.length,
  			matched = [],
  			targets = typeof selectors !== "string" && jQuery( selectors );
  
  		// Positional selectors never match, since there's no _selection_ context
  		if ( !rneedsContext.test( selectors ) ) {
  			for ( ; i < l; i++ ) {
  				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
  
  					// Always skip document fragments
  					if ( cur.nodeType < 11 && ( targets ?
  						targets.index( cur ) > -1 :
  
  						// Don't pass non-elements to Sizzle
  						cur.nodeType === 1 &&
  							jQuery.find.matchesSelector( cur, selectors ) ) ) {
  
  						matched.push( cur );
  						break;
  					}
  				}
  			}
  		}
  
  		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
  	},
  
  	// Determine the position of an element within the set
  	index: function( elem ) {
  
  		// No argument, return index in parent
  		if ( !elem ) {
  			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
  		}
  
  		// Index in selector
  		if ( typeof elem === "string" ) {
  			return indexOf.call( jQuery( elem ), this[ 0 ] );
  		}
  
  		// Locate the position of the desired element
  		return indexOf.call( this,
  
  			// If it receives a jQuery object, the first element is used
  			elem.jquery ? elem[ 0 ] : elem
  		);
  	},
  
  	add: function( selector, context ) {
  		return this.pushStack(
  			jQuery.uniqueSort(
  				jQuery.merge( this.get(), jQuery( selector, context ) )
  			)
  		);
  	},
  
  	addBack: function( selector ) {
  		return this.add( selector == null ?
  			this.prevObject : this.prevObject.filter( selector )
  		);
  	}
  } );
  
  function sibling( cur, dir ) {
  	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
  	return cur;
  }
  
  jQuery.each( {
  	parent: function( elem ) {
  		var parent = elem.parentNode;
  		return parent && parent.nodeType !== 11 ? parent : null;
  	},
  	parents: function( elem ) {
  		return dir( elem, "parentNode" );
  	},
  	parentsUntil: function( elem, i, until ) {
  		return dir( elem, "parentNode", until );
  	},
  	next: function( elem ) {
  		return sibling( elem, "nextSibling" );
  	},
  	prev: function( elem ) {
  		return sibling( elem, "previousSibling" );
  	},
  	nextAll: function( elem ) {
  		return dir( elem, "nextSibling" );
  	},
  	prevAll: function( elem ) {
  		return dir( elem, "previousSibling" );
  	},
  	nextUntil: function( elem, i, until ) {
  		return dir( elem, "nextSibling", until );
  	},
  	prevUntil: function( elem, i, until ) {
  		return dir( elem, "previousSibling", until );
  	},
  	siblings: function( elem ) {
  		return siblings( ( elem.parentNode || {} ).firstChild, elem );
  	},
  	children: function( elem ) {
  		return siblings( elem.firstChild );
  	},
  	contents: function( elem ) {
          if ( nodeName( elem, "iframe" ) ) {
              return elem.contentDocument;
          }
  
          // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
          // Treat the template element as a regular one in browsers that
          // don't support it.
          if ( nodeName( elem, "template" ) ) {
              elem = elem.content || elem;
          }
  
          return jQuery.merge( [], elem.childNodes );
  	}
  }, function( name, fn ) {
  	jQuery.fn[ name ] = function( until, selector ) {
  		var matched = jQuery.map( this, fn, until );
  
  		if ( name.slice( -5 ) !== "Until" ) {
  			selector = until;
  		}
  
  		if ( selector && typeof selector === "string" ) {
  			matched = jQuery.filter( selector, matched );
  		}
  
  		if ( this.length > 1 ) {
  
  			// Remove duplicates
  			if ( !guaranteedUnique[ name ] ) {
  				jQuery.uniqueSort( matched );
  			}
  
  			// Reverse order for parents* and prev-derivatives
  			if ( rparentsprev.test( name ) ) {
  				matched.reverse();
  			}
  		}
  
  		return this.pushStack( matched );
  	};
  } );
  var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );
  
  
  
  // Convert String-formatted options into Object-formatted ones
  function createOptions( options ) {
  	var object = {};
  	jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
  		object[ flag ] = true;
  	} );
  	return object;
  }
  
  /*
   * Create a callback list using the following parameters:
   *
   *	options: an optional list of space-separated options that will change how
   *			the callback list behaves or a more traditional option object
   *
   * By default a callback list will act like an event callback list and can be
   * "fired" multiple times.
   *
   * Possible options:
   *
   *	once:			will ensure the callback list can only be fired once (like a Deferred)
   *
   *	memory:			will keep track of previous values and will call any callback added
   *					after the list has been fired right away with the latest "memorized"
   *					values (like a Deferred)
   *
   *	unique:			will ensure a callback can only be added once (no duplicate in the list)
   *
   *	stopOnFalse:	interrupt callings when a callback returns false
   *
   */
  jQuery.Callbacks = function( options ) {
  
  	// Convert options from String-formatted to Object-formatted if needed
  	// (we check in cache first)
  	options = typeof options === "string" ?
  		createOptions( options ) :
  		jQuery.extend( {}, options );
  
  	var // Flag to know if list is currently firing
  		firing,
  
  		// Last fire value for non-forgettable lists
  		memory,
  
  		// Flag to know if list was already fired
  		fired,
  
  		// Flag to prevent firing
  		locked,
  
  		// Actual callback list
  		list = [],
  
  		// Queue of execution data for repeatable lists
  		queue = [],
  
  		// Index of currently firing callback (modified by add/remove as needed)
  		firingIndex = -1,
  
  		// Fire callbacks
  		fire = function() {
  
  			// Enforce single-firing
  			locked = locked || options.once;
  
  			// Execute callbacks for all pending executions,
  			// respecting firingIndex overrides and runtime changes
  			fired = firing = true;
  			for ( ; queue.length; firingIndex = -1 ) {
  				memory = queue.shift();
  				while ( ++firingIndex < list.length ) {
  
  					// Run callback and check for early termination
  					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
  						options.stopOnFalse ) {
  
  						// Jump to end and forget the data so .add doesn't re-fire
  						firingIndex = list.length;
  						memory = false;
  					}
  				}
  			}
  
  			// Forget the data if we're done with it
  			if ( !options.memory ) {
  				memory = false;
  			}
  
  			firing = false;
  
  			// Clean up if we're done firing for good
  			if ( locked ) {
  
  				// Keep an empty list if we have data for future add calls
  				if ( memory ) {
  					list = [];
  
  				// Otherwise, this object is spent
  				} else {
  					list = "";
  				}
  			}
  		},
  
  		// Actual Callbacks object
  		self = {
  
  			// Add a callback or a collection of callbacks to the list
  			add: function() {
  				if ( list ) {
  
  					// If we have memory from a past run, we should fire after adding
  					if ( memory && !firing ) {
  						firingIndex = list.length - 1;
  						queue.push( memory );
  					}
  
  					( function add( args ) {
  						jQuery.each( args, function( _, arg ) {
  							if ( jQuery.isFunction( arg ) ) {
  								if ( !options.unique || !self.has( arg ) ) {
  									list.push( arg );
  								}
  							} else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {
  
  								// Inspect recursively
  								add( arg );
  							}
  						} );
  					} )( arguments );
  
  					if ( memory && !firing ) {
  						fire();
  					}
  				}
  				return this;
  			},
  
  			// Remove a callback from the list
  			remove: function() {
  				jQuery.each( arguments, function( _, arg ) {
  					var index;
  					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
  						list.splice( index, 1 );
  
  						// Handle firing indexes
  						if ( index <= firingIndex ) {
  							firingIndex--;
  						}
  					}
  				} );
  				return this;
  			},
  
  			// Check if a given callback is in the list.
  			// If no argument is given, return whether or not list has callbacks attached.
  			has: function( fn ) {
  				return fn ?
  					jQuery.inArray( fn, list ) > -1 :
  					list.length > 0;
  			},
  
  			// Remove all callbacks from the list
  			empty: function() {
  				if ( list ) {
  					list = [];
  				}
  				return this;
  			},
  
  			// Disable .fire and .add
  			// Abort any current/pending executions
  			// Clear all callbacks and values
  			disable: function() {
  				locked = queue = [];
  				list = memory = "";
  				return this;
  			},
  			disabled: function() {
  				return !list;
  			},
  
  			// Disable .fire
  			// Also disable .add unless we have memory (since it would have no effect)
  			// Abort any pending executions
  			lock: function() {
  				locked = queue = [];
  				if ( !memory && !firing ) {
  					list = memory = "";
  				}
  				return this;
  			},
  			locked: function() {
  				return !!locked;
  			},
  
  			// Call all callbacks with the given context and arguments
  			fireWith: function( context, args ) {
  				if ( !locked ) {
  					args = args || [];
  					args = [ context, args.slice ? args.slice() : args ];
  					queue.push( args );
  					if ( !firing ) {
  						fire();
  					}
  				}
  				return this;
  			},
  
  			// Call all the callbacks with the given arguments
  			fire: function() {
  				self.fireWith( this, arguments );
  				return this;
  			},
  
  			// To know if the callbacks have already been called at least once
  			fired: function() {
  				return !!fired;
  			}
  		};
  
  	return self;
  };
  
  
  function Identity( v ) {
  	return v;
  }
  function Thrower( ex ) {
  	throw ex;
  }
  
  function adoptValue( value, resolve, reject, noValue ) {
  	var method;
  
  	try {
  
  		// Check for promise aspect first to privilege synchronous behavior
  		if ( value && jQuery.isFunction( ( method = value.promise ) ) ) {
  			method.call( value ).done( resolve ).fail( reject );
  
  		// Other thenables
  		} else if ( value && jQuery.isFunction( ( method = value.then ) ) ) {
  			method.call( value, resolve, reject );
  
  		// Other non-thenables
  		} else {
  
  			// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
  			// * false: [ value ].slice( 0 ) => resolve( value )
  			// * true: [ value ].slice( 1 ) => resolve()
  			resolve.apply( undefined, [ value ].slice( noValue ) );
  		}
  
  	// For Promises/A+, convert exceptions into rejections
  	// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
  	// Deferred#then to conditionally suppress rejection.
  	} catch ( value ) {
  
  		// Support: Android 4.0 only
  		// Strict mode functions invoked without .call/.apply get global-object context
  		reject.apply( undefined, [ value ] );
  	}
  }
  
  jQuery.extend( {
  
  	Deferred: function( func ) {
  		var tuples = [
  
  				// action, add listener, callbacks,
  				// ... .then handlers, argument index, [final state]
  				[ "notify", "progress", jQuery.Callbacks( "memory" ),
  					jQuery.Callbacks( "memory" ), 2 ],
  				[ "resolve", "done", jQuery.Callbacks( "once memory" ),
  					jQuery.Callbacks( "once memory" ), 0, "resolved" ],
  				[ "reject", "fail", jQuery.Callbacks( "once memory" ),
  					jQuery.Callbacks( "once memory" ), 1, "rejected" ]
  			],
  			state = "pending",
  			promise = {
  				state: function() {
  					return state;
  				},
  				always: function() {
  					deferred.done( arguments ).fail( arguments );
  					return this;
  				},
  				"catch": function( fn ) {
  					return promise.then( null, fn );
  				},
  
  				// Keep pipe for back-compat
  				pipe: function( /* fnDone, fnFail, fnProgress */ ) {
  					var fns = arguments;
  
  					return jQuery.Deferred( function( newDefer ) {
  						jQuery.each( tuples, function( i, tuple ) {
  
  							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
  							var fn = jQuery.isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
  
  							// deferred.progress(function() { bind to newDefer or newDefer.notify })
  							// deferred.done(function() { bind to newDefer or newDefer.resolve })
  							// deferred.fail(function() { bind to newDefer or newDefer.reject })
  							deferred[ tuple[ 1 ] ]( function() {
  								var returned = fn && fn.apply( this, arguments );
  								if ( returned && jQuery.isFunction( returned.promise ) ) {
  									returned.promise()
  										.progress( newDefer.notify )
  										.done( newDefer.resolve )
  										.fail( newDefer.reject );
  								} else {
  									newDefer[ tuple[ 0 ] + "With" ](
  										this,
  										fn ? [ returned ] : arguments
  									);
  								}
  							} );
  						} );
  						fns = null;
  					} ).promise();
  				},
  				then: function( onFulfilled, onRejected, onProgress ) {
  					var maxDepth = 0;
  					function resolve( depth, deferred, handler, special ) {
  						return function() {
  							var that = this,
  								args = arguments,
  								mightThrow = function() {
  									var returned, then;
  
  									// Support: Promises/A+ section 2.3.3.3.3
  									// https://promisesaplus.com/#point-59
  									// Ignore double-resolution attempts
  									if ( depth < maxDepth ) {
  										return;
  									}
  
  									returned = handler.apply( that, args );
  
  									// Support: Promises/A+ section 2.3.1
  									// https://promisesaplus.com/#point-48
  									if ( returned === deferred.promise() ) {
  										throw new TypeError( "Thenable self-resolution" );
  									}
  
  									// Support: Promises/A+ sections 2.3.3.1, 3.5
  									// https://promisesaplus.com/#point-54
  									// https://promisesaplus.com/#point-75
  									// Retrieve `then` only once
  									then = returned &&
  
  										// Support: Promises/A+ section 2.3.4
  										// https://promisesaplus.com/#point-64
  										// Only check objects and functions for thenability
  										( typeof returned === "object" ||
  											typeof returned === "function" ) &&
  										returned.then;
  
  									// Handle a returned thenable
  									if ( jQuery.isFunction( then ) ) {
  
  										// Special processors (notify) just wait for resolution
  										if ( special ) {
  											then.call(
  												returned,
  												resolve( maxDepth, deferred, Identity, special ),
  												resolve( maxDepth, deferred, Thrower, special )
  											);
  
  										// Normal processors (resolve) also hook into progress
  										} else {
  
  											// ...and disregard older resolution values
  											maxDepth++;
  
  											then.call(
  												returned,
  												resolve( maxDepth, deferred, Identity, special ),
  												resolve( maxDepth, deferred, Thrower, special ),
  												resolve( maxDepth, deferred, Identity,
  													deferred.notifyWith )
  											);
  										}
  
  									// Handle all other returned values
  									} else {
  
  										// Only substitute handlers pass on context
  										// and multiple values (non-spec behavior)
  										if ( handler !== Identity ) {
  											that = undefined;
  											args = [ returned ];
  										}
  
  										// Process the value(s)
  										// Default process is resolve
  										( special || deferred.resolveWith )( that, args );
  									}
  								},
  
  								// Only normal processors (resolve) catch and reject exceptions
  								process = special ?
  									mightThrow :
  									function() {
  										try {
  											mightThrow();
  										} catch ( e ) {
  
  											if ( jQuery.Deferred.exceptionHook ) {
  												jQuery.Deferred.exceptionHook( e,
  													process.stackTrace );
  											}
  
  											// Support: Promises/A+ section 2.3.3.3.4.1
  											// https://promisesaplus.com/#point-61
  											// Ignore post-resolution exceptions
  											if ( depth + 1 >= maxDepth ) {
  
  												// Only substitute handlers pass on context
  												// and multiple values (non-spec behavior)
  												if ( handler !== Thrower ) {
  													that = undefined;
  													args = [ e ];
  												}
  
  												deferred.rejectWith( that, args );
  											}
  										}
  									};
  
  							// Support: Promises/A+ section 2.3.3.3.1
  							// https://promisesaplus.com/#point-57
  							// Re-resolve promises immediately to dodge false rejection from
  							// subsequent errors
  							if ( depth ) {
  								process();
  							} else {
  
  								// Call an optional hook to record the stack, in case of exception
  								// since it's otherwise lost when execution goes async
  								if ( jQuery.Deferred.getStackHook ) {
  									process.stackTrace = jQuery.Deferred.getStackHook();
  								}
  								window.setTimeout( process );
  							}
  						};
  					}
  
  					return jQuery.Deferred( function( newDefer ) {
  
  						// progress_handlers.add( ... )
  						tuples[ 0 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								jQuery.isFunction( onProgress ) ?
  									onProgress :
  									Identity,
  								newDefer.notifyWith
  							)
  						);
  
  						// fulfilled_handlers.add( ... )
  						tuples[ 1 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								jQuery.isFunction( onFulfilled ) ?
  									onFulfilled :
  									Identity
  							)
  						);
  
  						// rejected_handlers.add( ... )
  						tuples[ 2 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								jQuery.isFunction( onRejected ) ?
  									onRejected :
  									Thrower
  							)
  						);
  					} ).promise();
  				},
  
  				// Get a promise for this deferred
  				// If obj is provided, the promise aspect is added to the object
  				promise: function( obj ) {
  					return obj != null ? jQuery.extend( obj, promise ) : promise;
  				}
  			},
  			deferred = {};
  
  		// Add list-specific methods
  		jQuery.each( tuples, function( i, tuple ) {
  			var list = tuple[ 2 ],
  				stateString = tuple[ 5 ];
  
  			// promise.progress = list.add
  			// promise.done = list.add
  			// promise.fail = list.add
  			promise[ tuple[ 1 ] ] = list.add;
  
  			// Handle state
  			if ( stateString ) {
  				list.add(
  					function() {
  
  						// state = "resolved" (i.e., fulfilled)
  						// state = "rejected"
  						state = stateString;
  					},
  
  					// rejected_callbacks.disable
  					// fulfilled_callbacks.disable
  					tuples[ 3 - i ][ 2 ].disable,
  
  					// progress_callbacks.lock
  					tuples[ 0 ][ 2 ].lock
  				);
  			}
  
  			// progress_handlers.fire
  			// fulfilled_handlers.fire
  			// rejected_handlers.fire
  			list.add( tuple[ 3 ].fire );
  
  			// deferred.notify = function() { deferred.notifyWith(...) }
  			// deferred.resolve = function() { deferred.resolveWith(...) }
  			// deferred.reject = function() { deferred.rejectWith(...) }
  			deferred[ tuple[ 0 ] ] = function() {
  				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
  				return this;
  			};
  
  			// deferred.notifyWith = list.fireWith
  			// deferred.resolveWith = list.fireWith
  			// deferred.rejectWith = list.fireWith
  			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
  		} );
  
  		// Make the deferred a promise
  		promise.promise( deferred );
  
  		// Call given func if any
  		if ( func ) {
  			func.call( deferred, deferred );
  		}
  
  		// All done!
  		return deferred;
  	},
  
  	// Deferred helper
  	when: function( singleValue ) {
  		var
  
  			// count of uncompleted subordinates
  			remaining = arguments.length,
  
  			// count of unprocessed arguments
  			i = remaining,
  
  			// subordinate fulfillment data
  			resolveContexts = Array( i ),
  			resolveValues = slice.call( arguments ),
  
  			// the master Deferred
  			master = jQuery.Deferred(),
  
  			// subordinate callback factory
  			updateFunc = function( i ) {
  				return function( value ) {
  					resolveContexts[ i ] = this;
  					resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
  					if ( !( --remaining ) ) {
  						master.resolveWith( resolveContexts, resolveValues );
  					}
  				};
  			};
  
  		// Single- and empty arguments are adopted like Promise.resolve
  		if ( remaining <= 1 ) {
  			adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
  				!remaining );
  
  			// Use .then() to unwrap secondary thenables (cf. gh-3000)
  			if ( master.state() === "pending" ||
  				jQuery.isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
  
  				return master.then();
  			}
  		}
  
  		// Multiple arguments are aggregated like Promise.all array elements
  		while ( i-- ) {
  			adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
  		}
  
  		return master.promise();
  	}
  } );
  
  
  // These usually indicate a programmer mistake during development,
  // warn about them ASAP rather than swallowing them by default.
  var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
  
  jQuery.Deferred.exceptionHook = function( error, stack ) {
  
  	// Support: IE 8 - 9 only
  	// Console exists when dev tools are open, which can happen at any time
  	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
  		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
  	}
  };
  
  
  
  
  jQuery.readyException = function( error ) {
  	window.setTimeout( function() {
  		throw error;
  	} );
  };
  
  
  
  
  // The deferred used on DOM ready
  var readyList = jQuery.Deferred();
  
  jQuery.fn.ready = function( fn ) {
  
  	readyList
  		.then( fn )
  
  		// Wrap jQuery.readyException in a function so that the lookup
  		// happens at the time of error handling instead of callback
  		// registration.
  		.catch( function( error ) {
  			jQuery.readyException( error );
  		} );
  
  	return this;
  };
  
  jQuery.extend( {
  
  	// Is the DOM ready to be used? Set to true once it occurs.
  	isReady: false,
  
  	// A counter to track how many items to wait for before
  	// the ready event fires. See #6781
  	readyWait: 1,
  
  	// Handle when the DOM is ready
  	ready: function( wait ) {
  
  		// Abort if there are pending holds or we're already ready
  		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
  			return;
  		}
  
  		// Remember that the DOM is ready
  		jQuery.isReady = true;
  
  		// If a normal DOM Ready event fired, decrement, and wait if need be
  		if ( wait !== true && --jQuery.readyWait > 0 ) {
  			return;
  		}
  
  		// If there are functions bound, to execute
  		readyList.resolveWith( document, [ jQuery ] );
  	}
  } );
  
  jQuery.ready.then = readyList.then;
  
  // The ready event handler and self cleanup method
  function completed() {
  	document.removeEventListener( "DOMContentLoaded", completed );
  	window.removeEventListener( "load", completed );
  	jQuery.ready();
  }
  
  // Catch cases where $(document).ready() is called
  // after the browser event has already occurred.
  // Support: IE <=9 - 10 only
  // Older IE sometimes signals "interactive" too soon
  if ( document.readyState === "complete" ||
  	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
  
  	// Handle it asynchronously to allow scripts the opportunity to delay ready
  	window.setTimeout( jQuery.ready );
  
  } else {
  
  	// Use the handy event callback
  	document.addEventListener( "DOMContentLoaded", completed );
  
  	// A fallback to window.onload, that will always work
  	window.addEventListener( "load", completed );
  }
  
  
  
  
  // Multifunctional method to get and set values of a collection
  // The value/s can optionally be executed if it's a function
  var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
  	var i = 0,
  		len = elems.length,
  		bulk = key == null;
  
  	// Sets many values
  	if ( jQuery.type( key ) === "object" ) {
  		chainable = true;
  		for ( i in key ) {
  			access( elems, fn, i, key[ i ], true, emptyGet, raw );
  		}
  
  	// Sets one value
  	} else if ( value !== undefined ) {
  		chainable = true;
  
  		if ( !jQuery.isFunction( value ) ) {
  			raw = true;
  		}
  
  		if ( bulk ) {
  
  			// Bulk operations run against the entire set
  			if ( raw ) {
  				fn.call( elems, value );
  				fn = null;
  
  			// ...except when executing function values
  			} else {
  				bulk = fn;
  				fn = function( elem, key, value ) {
  					return bulk.call( jQuery( elem ), value );
  				};
  			}
  		}
  
  		if ( fn ) {
  			for ( ; i < len; i++ ) {
  				fn(
  					elems[ i ], key, raw ?
  					value :
  					value.call( elems[ i ], i, fn( elems[ i ], key ) )
  				);
  			}
  		}
  	}
  
  	if ( chainable ) {
  		return elems;
  	}
  
  	// Gets
  	if ( bulk ) {
  		return fn.call( elems );
  	}
  
  	return len ? fn( elems[ 0 ], key ) : emptyGet;
  };
  var acceptData = function( owner ) {
  
  	// Accepts only:
  	//  - Node
  	//    - Node.ELEMENT_NODE
  	//    - Node.DOCUMENT_NODE
  	//  - Object
  	//    - Any
  	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
  };
  
  
  
  
  function Data() {
  	this.expando = jQuery.expando + Data.uid++;
  }
  
  Data.uid = 1;
  
  Data.prototype = {
  
  	cache: function( owner ) {
  
  		// Check if the owner object already has a cache
  		var value = owner[ this.expando ];
  
  		// If not, create one
  		if ( !value ) {
  			value = {};
  
  			// We can accept data for non-element nodes in modern browsers,
  			// but we should not, see #8335.
  			// Always return an empty object.
  			if ( acceptData( owner ) ) {
  
  				// If it is a node unlikely to be stringify-ed or looped over
  				// use plain assignment
  				if ( owner.nodeType ) {
  					owner[ this.expando ] = value;
  
  				// Otherwise secure it in a non-enumerable property
  				// configurable must be true to allow the property to be
  				// deleted when data is removed
  				} else {
  					Object.defineProperty( owner, this.expando, {
  						value: value,
  						configurable: true
  					} );
  				}
  			}
  		}
  
  		return value;
  	},
  	set: function( owner, data, value ) {
  		var prop,
  			cache = this.cache( owner );
  
  		// Handle: [ owner, key, value ] args
  		// Always use camelCase key (gh-2257)
  		if ( typeof data === "string" ) {
  			cache[ jQuery.camelCase( data ) ] = value;
  
  		// Handle: [ owner, { properties } ] args
  		} else {
  
  			// Copy the properties one-by-one to the cache object
  			for ( prop in data ) {
  				cache[ jQuery.camelCase( prop ) ] = data[ prop ];
  			}
  		}
  		return cache;
  	},
  	get: function( owner, key ) {
  		return key === undefined ?
  			this.cache( owner ) :
  
  			// Always use camelCase key (gh-2257)
  			owner[ this.expando ] && owner[ this.expando ][ jQuery.camelCase( key ) ];
  	},
  	access: function( owner, key, value ) {
  
  		// In cases where either:
  		//
  		//   1. No key was specified
  		//   2. A string key was specified, but no value provided
  		//
  		// Take the "read" path and allow the get method to determine
  		// which value to return, respectively either:
  		//
  		//   1. The entire cache object
  		//   2. The data stored at the key
  		//
  		if ( key === undefined ||
  				( ( key && typeof key === "string" ) && value === undefined ) ) {
  
  			return this.get( owner, key );
  		}
  
  		// When the key is not a string, or both a key and value
  		// are specified, set or extend (existing objects) with either:
  		//
  		//   1. An object of properties
  		//   2. A key and value
  		//
  		this.set( owner, key, value );
  
  		// Since the "set" path can have two possible entry points
  		// return the expected data based on which path was taken[*]
  		return value !== undefined ? value : key;
  	},
  	remove: function( owner, key ) {
  		var i,
  			cache = owner[ this.expando ];
  
  		if ( cache === undefined ) {
  			return;
  		}
  
  		if ( key !== undefined ) {
  
  			// Support array or space separated string of keys
  			if ( Array.isArray( key ) ) {
  
  				// If key is an array of keys...
  				// We always set camelCase keys, so remove that.
  				key = key.map( jQuery.camelCase );
  			} else {
  				key = jQuery.camelCase( key );
  
  				// If a key with the spaces exists, use it.
  				// Otherwise, create an array by matching non-whitespace
  				key = key in cache ?
  					[ key ] :
  					( key.match( rnothtmlwhite ) || [] );
  			}
  
  			i = key.length;
  
  			while ( i-- ) {
  				delete cache[ key[ i ] ];
  			}
  		}
  
  		// Remove the expando if there's no more data
  		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
  
  			// Support: Chrome <=35 - 45
  			// Webkit & Blink performance suffers when deleting properties
  			// from DOM nodes, so set to undefined instead
  			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
  			if ( owner.nodeType ) {
  				owner[ this.expando ] = undefined;
  			} else {
  				delete owner[ this.expando ];
  			}
  		}
  	},
  	hasData: function( owner ) {
  		var cache = owner[ this.expando ];
  		return cache !== undefined && !jQuery.isEmptyObject( cache );
  	}
  };
  var dataPriv = new Data();
  
  var dataUser = new Data();
  
  
  
  //	Implementation Summary
  //
  //	1. Enforce API surface and semantic compatibility with 1.9.x branch
  //	2. Improve the module's maintainability by reducing the storage
  //		paths to a single mechanism.
  //	3. Use the same single mechanism to support "private" and "user" data.
  //	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
  //	5. Avoid exposing implementation details on user objects (eg. expando properties)
  //	6. Provide a clear path for implementation upgrade to WeakMap in 2014
  
  var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
  	rmultiDash = /[A-Z]/g;
  
  function getData( data ) {
  	if ( data === "true" ) {
  		return true;
  	}
  
  	if ( data === "false" ) {
  		return false;
  	}
  
  	if ( data === "null" ) {
  		return null;
  	}
  
  	// Only convert to a number if it doesn't change the string
  	if ( data === +data + "" ) {
  		return +data;
  	}
  
  	if ( rbrace.test( data ) ) {
  		return JSON.parse( data );
  	}
  
  	return data;
  }
  
  function dataAttr( elem, key, data ) {
  	var name;
  
  	// If nothing was found internally, try to fetch any
  	// data from the HTML5 data-* attribute
  	if ( data === undefined && elem.nodeType === 1 ) {
  		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
  		data = elem.getAttribute( name );
  
  		if ( typeof data === "string" ) {
  			try {
  				data = getData( data );
  			} catch ( e ) {}
  
  			// Make sure we set the data so it isn't changed later
  			dataUser.set( elem, key, data );
  		} else {
  			data = undefined;
  		}
  	}
  	return data;
  }
  
  jQuery.extend( {
  	hasData: function( elem ) {
  		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
  	},
  
  	data: function( elem, name, data ) {
  		return dataUser.access( elem, name, data );
  	},
  
  	removeData: function( elem, name ) {
  		dataUser.remove( elem, name );
  	},
  
  	// TODO: Now that all calls to _data and _removeData have been replaced
  	// with direct calls to dataPriv methods, these can be deprecated.
  	_data: function( elem, name, data ) {
  		return dataPriv.access( elem, name, data );
  	},
  
  	_removeData: function( elem, name ) {
  		dataPriv.remove( elem, name );
  	}
  } );
  
  jQuery.fn.extend( {
  	data: function( key, value ) {
  		var i, name, data,
  			elem = this[ 0 ],
  			attrs = elem && elem.attributes;
  
  		// Gets all values
  		if ( key === undefined ) {
  			if ( this.length ) {
  				data = dataUser.get( elem );
  
  				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
  					i = attrs.length;
  					while ( i-- ) {
  
  						// Support: IE 11 only
  						// The attrs elements can be null (#14894)
  						if ( attrs[ i ] ) {
  							name = attrs[ i ].name;
  							if ( name.indexOf( "data-" ) === 0 ) {
  								name = jQuery.camelCase( name.slice( 5 ) );
  								dataAttr( elem, name, data[ name ] );
  							}
  						}
  					}
  					dataPriv.set( elem, "hasDataAttrs", true );
  				}
  			}
  
  			return data;
  		}
  
  		// Sets multiple values
  		if ( typeof key === "object" ) {
  			return this.each( function() {
  				dataUser.set( this, key );
  			} );
  		}
  
  		return access( this, function( value ) {
  			var data;
  
  			// The calling jQuery object (element matches) is not empty
  			// (and therefore has an element appears at this[ 0 ]) and the
  			// `value` parameter was not undefined. An empty jQuery object
  			// will result in `undefined` for elem = this[ 0 ] which will
  			// throw an exception if an attempt to read a data cache is made.
  			if ( elem && value === undefined ) {
  
  				// Attempt to get data from the cache
  				// The key will always be camelCased in Data
  				data = dataUser.get( elem, key );
  				if ( data !== undefined ) {
  					return data;
  				}
  
  				// Attempt to "discover" the data in
  				// HTML5 custom data-* attrs
  				data = dataAttr( elem, key );
  				if ( data !== undefined ) {
  					return data;
  				}
  
  				// We tried really hard, but the data doesn't exist.
  				return;
  			}
  
  			// Set the data...
  			this.each( function() {
  
  				// We always store the camelCased key
  				dataUser.set( this, key, value );
  			} );
  		}, null, value, arguments.length > 1, null, true );
  	},
  
  	removeData: function( key ) {
  		return this.each( function() {
  			dataUser.remove( this, key );
  		} );
  	}
  } );
  
  
  jQuery.extend( {
  	queue: function( elem, type, data ) {
  		var queue;
  
  		if ( elem ) {
  			type = ( type || "fx" ) + "queue";
  			queue = dataPriv.get( elem, type );
  
  			// Speed up dequeue by getting out quickly if this is just a lookup
  			if ( data ) {
  				if ( !queue || Array.isArray( data ) ) {
  					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
  				} else {
  					queue.push( data );
  				}
  			}
  			return queue || [];
  		}
  	},
  
  	dequeue: function( elem, type ) {
  		type = type || "fx";
  
  		var queue = jQuery.queue( elem, type ),
  			startLength = queue.length,
  			fn = queue.shift(),
  			hooks = jQuery._queueHooks( elem, type ),
  			next = function() {
  				jQuery.dequeue( elem, type );
  			};
  
  		// If the fx queue is dequeued, always remove the progress sentinel
  		if ( fn === "inprogress" ) {
  			fn = queue.shift();
  			startLength--;
  		}
  
  		if ( fn ) {
  
  			// Add a progress sentinel to prevent the fx queue from being
  			// automatically dequeued
  			if ( type === "fx" ) {
  				queue.unshift( "inprogress" );
  			}
  
  			// Clear up the last queue stop function
  			delete hooks.stop;
  			fn.call( elem, next, hooks );
  		}
  
  		if ( !startLength && hooks ) {
  			hooks.empty.fire();
  		}
  	},
  
  	// Not public - generate a queueHooks object, or return the current one
  	_queueHooks: function( elem, type ) {
  		var key = type + "queueHooks";
  		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
  			empty: jQuery.Callbacks( "once memory" ).add( function() {
  				dataPriv.remove( elem, [ type + "queue", key ] );
  			} )
  		} );
  	}
  } );
  
  jQuery.fn.extend( {
  	queue: function( type, data ) {
  		var setter = 2;
  
  		if ( typeof type !== "string" ) {
  			data = type;
  			type = "fx";
  			setter--;
  		}
  
  		if ( arguments.length < setter ) {
  			return jQuery.queue( this[ 0 ], type );
  		}
  
  		return data === undefined ?
  			this :
  			this.each( function() {
  				var queue = jQuery.queue( this, type, data );
  
  				// Ensure a hooks for this queue
  				jQuery._queueHooks( this, type );
  
  				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
  					jQuery.dequeue( this, type );
  				}
  			} );
  	},
  	dequeue: function( type ) {
  		return this.each( function() {
  			jQuery.dequeue( this, type );
  		} );
  	},
  	clearQueue: function( type ) {
  		return this.queue( type || "fx", [] );
  	},
  
  	// Get a promise resolved when queues of a certain type
  	// are emptied (fx is the type by default)
  	promise: function( type, obj ) {
  		var tmp,
  			count = 1,
  			defer = jQuery.Deferred(),
  			elements = this,
  			i = this.length,
  			resolve = function() {
  				if ( !( --count ) ) {
  					defer.resolveWith( elements, [ elements ] );
  				}
  			};
  
  		if ( typeof type !== "string" ) {
  			obj = type;
  			type = undefined;
  		}
  		type = type || "fx";
  
  		while ( i-- ) {
  			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
  			if ( tmp && tmp.empty ) {
  				count++;
  				tmp.empty.add( resolve );
  			}
  		}
  		resolve();
  		return defer.promise( obj );
  	}
  } );
  var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
  
  var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
  
  
  var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
  
  var isHiddenWithinTree = function( elem, el ) {
  
  		// isHiddenWithinTree might be called from jQuery#filter function;
  		// in that case, element will be second argument
  		elem = el || elem;
  
  		// Inline style trumps all
  		return elem.style.display === "none" ||
  			elem.style.display === "" &&
  
  			// Otherwise, check computed style
  			// Support: Firefox <=43 - 45
  			// Disconnected elements can have computed display: none, so first confirm that elem is
  			// in the document.
  			jQuery.contains( elem.ownerDocument, elem ) &&
  
  			jQuery.css( elem, "display" ) === "none";
  	};
  
  var swap = function( elem, options, callback, args ) {
  	var ret, name,
  		old = {};
  
  	// Remember the old values, and insert the new ones
  	for ( name in options ) {
  		old[ name ] = elem.style[ name ];
  		elem.style[ name ] = options[ name ];
  	}
  
  	ret = callback.apply( elem, args || [] );
  
  	// Revert the old values
  	for ( name in options ) {
  		elem.style[ name ] = old[ name ];
  	}
  
  	return ret;
  };
  
  
  
  
  function adjustCSS( elem, prop, valueParts, tween ) {
  	var adjusted,
  		scale = 1,
  		maxIterations = 20,
  		currentValue = tween ?
  			function() {
  				return tween.cur();
  			} :
  			function() {
  				return jQuery.css( elem, prop, "" );
  			},
  		initial = currentValue(),
  		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
  
  		// Starting value computation is required for potential unit mismatches
  		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
  			rcssNum.exec( jQuery.css( elem, prop ) );
  
  	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
  
  		// Trust units reported by jQuery.css
  		unit = unit || initialInUnit[ 3 ];
  
  		// Make sure we update the tween properties later on
  		valueParts = valueParts || [];
  
  		// Iteratively approximate from a nonzero starting point
  		initialInUnit = +initial || 1;
  
  		do {
  
  			// If previous iteration zeroed out, double until we get *something*.
  			// Use string for doubling so we don't accidentally see scale as unchanged below
  			scale = scale || ".5";
  
  			// Adjust and apply
  			initialInUnit = initialInUnit / scale;
  			jQuery.style( elem, prop, initialInUnit + unit );
  
  		// Update scale, tolerating zero or NaN from tween.cur()
  		// Break the loop if scale is unchanged or perfect, or if we've just had enough.
  		} while (
  			scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
  		);
  	}
  
  	if ( valueParts ) {
  		initialInUnit = +initialInUnit || +initial || 0;
  
  		// Apply relative offset (+=/-=) if specified
  		adjusted = valueParts[ 1 ] ?
  			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
  			+valueParts[ 2 ];
  		if ( tween ) {
  			tween.unit = unit;
  			tween.start = initialInUnit;
  			tween.end = adjusted;
  		}
  	}
  	return adjusted;
  }
  
  
  var defaultDisplayMap = {};
  
  function getDefaultDisplay( elem ) {
  	var temp,
  		doc = elem.ownerDocument,
  		nodeName = elem.nodeName,
  		display = defaultDisplayMap[ nodeName ];
  
  	if ( display ) {
  		return display;
  	}
  
  	temp = doc.body.appendChild( doc.createElement( nodeName ) );
  	display = jQuery.css( temp, "display" );
  
  	temp.parentNode.removeChild( temp );
  
  	if ( display === "none" ) {
  		display = "block";
  	}
  	defaultDisplayMap[ nodeName ] = display;
  
  	return display;
  }
  
  function showHide( elements, show ) {
  	var display, elem,
  		values = [],
  		index = 0,
  		length = elements.length;
  
  	// Determine new display value for elements that need to change
  	for ( ; index < length; index++ ) {
  		elem = elements[ index ];
  		if ( !elem.style ) {
  			continue;
  		}
  
  		display = elem.style.display;
  		if ( show ) {
  
  			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
  			// check is required in this first loop unless we have a nonempty display value (either
  			// inline or about-to-be-restored)
  			if ( display === "none" ) {
  				values[ index ] = dataPriv.get( elem, "display" ) || null;
  				if ( !values[ index ] ) {
  					elem.style.display = "";
  				}
  			}
  			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
  				values[ index ] = getDefaultDisplay( elem );
  			}
  		} else {
  			if ( display !== "none" ) {
  				values[ index ] = "none";
  
  				// Remember what we're overwriting
  				dataPriv.set( elem, "display", display );
  			}
  		}
  	}
  
  	// Set the display of the elements in a second loop to avoid constant reflow
  	for ( index = 0; index < length; index++ ) {
  		if ( values[ index ] != null ) {
  			elements[ index ].style.display = values[ index ];
  		}
  	}
  
  	return elements;
  }
  
  jQuery.fn.extend( {
  	show: function() {
  		return showHide( this, true );
  	},
  	hide: function() {
  		return showHide( this );
  	},
  	toggle: function( state ) {
  		if ( typeof state === "boolean" ) {
  			return state ? this.show() : this.hide();
  		}
  
  		return this.each( function() {
  			if ( isHiddenWithinTree( this ) ) {
  				jQuery( this ).show();
  			} else {
  				jQuery( this ).hide();
  			}
  		} );
  	}
  } );
  var rcheckableType = ( /^(?:checkbox|radio)$/i );
  
  var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
  
  var rscriptType = ( /^$|\/(?:java|ecma)script/i );
  
  
  
  // We have to close these tags to support XHTML (#13200)
  var wrapMap = {
  
  	// Support: IE <=9 only
  	option: [ 1, "<select multiple='multiple'>", "</select>" ],
  
  	// XHTML parsers do not magically insert elements in the
  	// same way that tag soup parsers do. So we cannot shorten
  	// this by omitting <tbody> or other required elements.
  	thead: [ 1, "<table>", "</table>" ],
  	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
  	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
  	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
  
  	_default: [ 0, "", "" ]
  };
  
  // Support: IE <=9 only
  wrapMap.optgroup = wrapMap.option;
  
  wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
  wrapMap.th = wrapMap.td;
  
  
  function getAll( context, tag ) {
  
  	// Support: IE <=9 - 11 only
  	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
  	var ret;
  
  	if ( typeof context.getElementsByTagName !== "undefined" ) {
  		ret = context.getElementsByTagName( tag || "*" );
  
  	} else if ( typeof context.querySelectorAll !== "undefined" ) {
  		ret = context.querySelectorAll( tag || "*" );
  
  	} else {
  		ret = [];
  	}
  
  	if ( tag === undefined || tag && nodeName( context, tag ) ) {
  		return jQuery.merge( [ context ], ret );
  	}
  
  	return ret;
  }
  
  
  // Mark scripts as having already been evaluated
  function setGlobalEval( elems, refElements ) {
  	var i = 0,
  		l = elems.length;
  
  	for ( ; i < l; i++ ) {
  		dataPriv.set(
  			elems[ i ],
  			"globalEval",
  			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
  		);
  	}
  }
  
  
  var rhtml = /<|&#?\w+;/;
  
  function buildFragment( elems, context, scripts, selection, ignored ) {
  	var elem, tmp, tag, wrap, contains, j,
  		fragment = context.createDocumentFragment(),
  		nodes = [],
  		i = 0,
  		l = elems.length;
  
  	for ( ; i < l; i++ ) {
  		elem = elems[ i ];
  
  		if ( elem || elem === 0 ) {
  
  			// Add nodes directly
  			if ( jQuery.type( elem ) === "object" ) {
  
  				// Support: Android <=4.0 only, PhantomJS 1 only
  				// push.apply(_, arraylike) throws on ancient WebKit
  				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
  
  			// Convert non-html into a text node
  			} else if ( !rhtml.test( elem ) ) {
  				nodes.push( context.createTextNode( elem ) );
  
  			// Convert html into DOM nodes
  			} else {
  				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
  
  				// Deserialize a standard representation
  				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
  				wrap = wrapMap[ tag ] || wrapMap._default;
  				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
  
  				// Descend through wrappers to the right content
  				j = wrap[ 0 ];
  				while ( j-- ) {
  					tmp = tmp.lastChild;
  				}
  
  				// Support: Android <=4.0 only, PhantomJS 1 only
  				// push.apply(_, arraylike) throws on ancient WebKit
  				jQuery.merge( nodes, tmp.childNodes );
  
  				// Remember the top-level container
  				tmp = fragment.firstChild;
  
  				// Ensure the created nodes are orphaned (#12392)
  				tmp.textContent = "";
  			}
  		}
  	}
  
  	// Remove wrapper from fragment
  	fragment.textContent = "";
  
  	i = 0;
  	while ( ( elem = nodes[ i++ ] ) ) {
  
  		// Skip elements already in the context collection (trac-4087)
  		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
  			if ( ignored ) {
  				ignored.push( elem );
  			}
  			continue;
  		}
  
  		contains = jQuery.contains( elem.ownerDocument, elem );
  
  		// Append to fragment
  		tmp = getAll( fragment.appendChild( elem ), "script" );
  
  		// Preserve script evaluation history
  		if ( contains ) {
  			setGlobalEval( tmp );
  		}
  
  		// Capture executables
  		if ( scripts ) {
  			j = 0;
  			while ( ( elem = tmp[ j++ ] ) ) {
  				if ( rscriptType.test( elem.type || "" ) ) {
  					scripts.push( elem );
  				}
  			}
  		}
  	}
  
  	return fragment;
  }
  
  
  ( function() {
  	var fragment = document.createDocumentFragment(),
  		div = fragment.appendChild( document.createElement( "div" ) ),
  		input = document.createElement( "input" );
  
  	// Support: Android 4.0 - 4.3 only
  	// Check state lost if the name is set (#11217)
  	// Support: Windows Web Apps (WWA)
  	// `name` and `type` must use .setAttribute for WWA (#14901)
  	input.setAttribute( "type", "radio" );
  	input.setAttribute( "checked", "checked" );
  	input.setAttribute( "name", "t" );
  
  	div.appendChild( input );
  
  	// Support: Android <=4.1 only
  	// Older WebKit doesn't clone checked state correctly in fragments
  	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
  
  	// Support: IE <=11 only
  	// Make sure textarea (and checkbox) defaultValue is properly cloned
  	div.innerHTML = "<textarea>x</textarea>";
  	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
  } )();
  var documentElement = document.documentElement;
  
  
  
  var
  	rkeyEvent = /^key/,
  	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
  	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
  
  function returnTrue() {
  	return true;
  }
  
  function returnFalse() {
  	return false;
  }
  
  // Support: IE <=9 only
  // See #13393 for more info
  function safeActiveElement() {
  	try {
  		return document.activeElement;
  	} catch ( err ) { }
  }
  
  function on( elem, types, selector, data, fn, one ) {
  	var origFn, type;
  
  	// Types can be a map of types/handlers
  	if ( typeof types === "object" ) {
  
  		// ( types-Object, selector, data )
  		if ( typeof selector !== "string" ) {
  
  			// ( types-Object, data )
  			data = data || selector;
  			selector = undefined;
  		}
  		for ( type in types ) {
  			on( elem, type, selector, data, types[ type ], one );
  		}
  		return elem;
  	}
  
  	if ( data == null && fn == null ) {
  
  		// ( types, fn )
  		fn = selector;
  		data = selector = undefined;
  	} else if ( fn == null ) {
  		if ( typeof selector === "string" ) {
  
  			// ( types, selector, fn )
  			fn = data;
  			data = undefined;
  		} else {
  
  			// ( types, data, fn )
  			fn = data;
  			data = selector;
  			selector = undefined;
  		}
  	}
  	if ( fn === false ) {
  		fn = returnFalse;
  	} else if ( !fn ) {
  		return elem;
  	}
  
  	if ( one === 1 ) {
  		origFn = fn;
  		fn = function( event ) {
  
  			// Can use an empty set, since event contains the info
  			jQuery().off( event );
  			return origFn.apply( this, arguments );
  		};
  
  		// Use same guid so caller can remove using origFn
  		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
  	}
  	return elem.each( function() {
  		jQuery.event.add( this, types, fn, data, selector );
  	} );
  }
  
  /*
   * Helper functions for managing events -- not part of the public interface.
   * Props to Dean Edwards' addEvent library for many of the ideas.
   */
  jQuery.event = {
  
  	global: {},
  
  	add: function( elem, types, handler, data, selector ) {
  
  		var handleObjIn, eventHandle, tmp,
  			events, t, handleObj,
  			special, handlers, type, namespaces, origType,
  			elemData = dataPriv.get( elem );
  
  		// Don't attach events to noData or text/comment nodes (but allow plain objects)
  		if ( !elemData ) {
  			return;
  		}
  
  		// Caller can pass in an object of custom data in lieu of the handler
  		if ( handler.handler ) {
  			handleObjIn = handler;
  			handler = handleObjIn.handler;
  			selector = handleObjIn.selector;
  		}
  
  		// Ensure that invalid selectors throw exceptions at attach time
  		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
  		if ( selector ) {
  			jQuery.find.matchesSelector( documentElement, selector );
  		}
  
  		// Make sure that the handler has a unique ID, used to find/remove it later
  		if ( !handler.guid ) {
  			handler.guid = jQuery.guid++;
  		}
  
  		// Init the element's event structure and main handler, if this is the first
  		if ( !( events = elemData.events ) ) {
  			events = elemData.events = {};
  		}
  		if ( !( eventHandle = elemData.handle ) ) {
  			eventHandle = elemData.handle = function( e ) {
  
  				// Discard the second event of a jQuery.event.trigger() and
  				// when an event is called after a page has unloaded
  				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
  					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
  			};
  		}
  
  		// Handle multiple events separated by a space
  		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
  		t = types.length;
  		while ( t-- ) {
  			tmp = rtypenamespace.exec( types[ t ] ) || [];
  			type = origType = tmp[ 1 ];
  			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
  
  			// There *must* be a type, no attaching namespace-only handlers
  			if ( !type ) {
  				continue;
  			}
  
  			// If event changes its type, use the special event handlers for the changed type
  			special = jQuery.event.special[ type ] || {};
  
  			// If selector defined, determine special event api type, otherwise given type
  			type = ( selector ? special.delegateType : special.bindType ) || type;
  
  			// Update special based on newly reset type
  			special = jQuery.event.special[ type ] || {};
  
  			// handleObj is passed to all event handlers
  			handleObj = jQuery.extend( {
  				type: type,
  				origType: origType,
  				data: data,
  				handler: handler,
  				guid: handler.guid,
  				selector: selector,
  				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
  				namespace: namespaces.join( "." )
  			}, handleObjIn );
  
  			// Init the event handler queue if we're the first
  			if ( !( handlers = events[ type ] ) ) {
  				handlers = events[ type ] = [];
  				handlers.delegateCount = 0;
  
  				// Only use addEventListener if the special events handler returns false
  				if ( !special.setup ||
  					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
  
  					if ( elem.addEventListener ) {
  						elem.addEventListener( type, eventHandle );
  					}
  				}
  			}
  
  			if ( special.add ) {
  				special.add.call( elem, handleObj );
  
  				if ( !handleObj.handler.guid ) {
  					handleObj.handler.guid = handler.guid;
  				}
  			}
  
  			// Add to the element's handler list, delegates in front
  			if ( selector ) {
  				handlers.splice( handlers.delegateCount++, 0, handleObj );
  			} else {
  				handlers.push( handleObj );
  			}
  
  			// Keep track of which events have ever been used, for event optimization
  			jQuery.event.global[ type ] = true;
  		}
  
  	},
  
  	// Detach an event or set of events from an element
  	remove: function( elem, types, handler, selector, mappedTypes ) {
  
  		var j, origCount, tmp,
  			events, t, handleObj,
  			special, handlers, type, namespaces, origType,
  			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
  
  		if ( !elemData || !( events = elemData.events ) ) {
  			return;
  		}
  
  		// Once for each type.namespace in types; type may be omitted
  		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
  		t = types.length;
  		while ( t-- ) {
  			tmp = rtypenamespace.exec( types[ t ] ) || [];
  			type = origType = tmp[ 1 ];
  			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
  
  			// Unbind all events (on this namespace, if provided) for the element
  			if ( !type ) {
  				for ( type in events ) {
  					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
  				}
  				continue;
  			}
  
  			special = jQuery.event.special[ type ] || {};
  			type = ( selector ? special.delegateType : special.bindType ) || type;
  			handlers = events[ type ] || [];
  			tmp = tmp[ 2 ] &&
  				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );
  
  			// Remove matching events
  			origCount = j = handlers.length;
  			while ( j-- ) {
  				handleObj = handlers[ j ];
  
  				if ( ( mappedTypes || origType === handleObj.origType ) &&
  					( !handler || handler.guid === handleObj.guid ) &&
  					( !tmp || tmp.test( handleObj.namespace ) ) &&
  					( !selector || selector === handleObj.selector ||
  						selector === "**" && handleObj.selector ) ) {
  					handlers.splice( j, 1 );
  
  					if ( handleObj.selector ) {
  						handlers.delegateCount--;
  					}
  					if ( special.remove ) {
  						special.remove.call( elem, handleObj );
  					}
  				}
  			}
  
  			// Remove generic event handler if we removed something and no more handlers exist
  			// (avoids potential for endless recursion during removal of special event handlers)
  			if ( origCount && !handlers.length ) {
  				if ( !special.teardown ||
  					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
  
  					jQuery.removeEvent( elem, type, elemData.handle );
  				}
  
  				delete events[ type ];
  			}
  		}
  
  		// Remove data and the expando if it's no longer used
  		if ( jQuery.isEmptyObject( events ) ) {
  			dataPriv.remove( elem, "handle events" );
  		}
  	},
  
  	dispatch: function( nativeEvent ) {
  
  		// Make a writable jQuery.Event from the native event object
  		var event = jQuery.event.fix( nativeEvent );
  
  		var i, j, ret, matched, handleObj, handlerQueue,
  			args = new Array( arguments.length ),
  			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
  			special = jQuery.event.special[ event.type ] || {};
  
  		// Use the fix-ed jQuery.Event rather than the (read-only) native event
  		args[ 0 ] = event;
  
  		for ( i = 1; i < arguments.length; i++ ) {
  			args[ i ] = arguments[ i ];
  		}
  
  		event.delegateTarget = this;
  
  		// Call the preDispatch hook for the mapped type, and let it bail if desired
  		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
  			return;
  		}
  
  		// Determine handlers
  		handlerQueue = jQuery.event.handlers.call( this, event, handlers );
  
  		// Run delegates first; they may want to stop propagation beneath us
  		i = 0;
  		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
  			event.currentTarget = matched.elem;
  
  			j = 0;
  			while ( ( handleObj = matched.handlers[ j++ ] ) &&
  				!event.isImmediatePropagationStopped() ) {
  
  				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
  				// a subset or equal to those in the bound event (both can have no namespace).
  				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {
  
  					event.handleObj = handleObj;
  					event.data = handleObj.data;
  
  					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
  						handleObj.handler ).apply( matched.elem, args );
  
  					if ( ret !== undefined ) {
  						if ( ( event.result = ret ) === false ) {
  							event.preventDefault();
  							event.stopPropagation();
  						}
  					}
  				}
  			}
  		}
  
  		// Call the postDispatch hook for the mapped type
  		if ( special.postDispatch ) {
  			special.postDispatch.call( this, event );
  		}
  
  		return event.result;
  	},
  
  	handlers: function( event, handlers ) {
  		var i, handleObj, sel, matchedHandlers, matchedSelectors,
  			handlerQueue = [],
  			delegateCount = handlers.delegateCount,
  			cur = event.target;
  
  		// Find delegate handlers
  		if ( delegateCount &&
  
  			// Support: IE <=9
  			// Black-hole SVG <use> instance trees (trac-13180)
  			cur.nodeType &&
  
  			// Support: Firefox <=42
  			// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
  			// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
  			// Support: IE 11 only
  			// ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
  			!( event.type === "click" && event.button >= 1 ) ) {
  
  			for ( ; cur !== this; cur = cur.parentNode || this ) {
  
  				// Don't check non-elements (#13208)
  				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
  				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
  					matchedHandlers = [];
  					matchedSelectors = {};
  					for ( i = 0; i < delegateCount; i++ ) {
  						handleObj = handlers[ i ];
  
  						// Don't conflict with Object.prototype properties (#13203)
  						sel = handleObj.selector + " ";
  
  						if ( matchedSelectors[ sel ] === undefined ) {
  							matchedSelectors[ sel ] = handleObj.needsContext ?
  								jQuery( sel, this ).index( cur ) > -1 :
  								jQuery.find( sel, this, null, [ cur ] ).length;
  						}
  						if ( matchedSelectors[ sel ] ) {
  							matchedHandlers.push( handleObj );
  						}
  					}
  					if ( matchedHandlers.length ) {
  						handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
  					}
  				}
  			}
  		}
  
  		// Add the remaining (directly-bound) handlers
  		cur = this;
  		if ( delegateCount < handlers.length ) {
  			handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
  		}
  
  		return handlerQueue;
  	},
  
  	addProp: function( name, hook ) {
  		Object.defineProperty( jQuery.Event.prototype, name, {
  			enumerable: true,
  			configurable: true,
  
  			get: jQuery.isFunction( hook ) ?
  				function() {
  					if ( this.originalEvent ) {
  							return hook( this.originalEvent );
  					}
  				} :
  				function() {
  					if ( this.originalEvent ) {
  							return this.originalEvent[ name ];
  					}
  				},
  
  			set: function( value ) {
  				Object.defineProperty( this, name, {
  					enumerable: true,
  					configurable: true,
  					writable: true,
  					value: value
  				} );
  			}
  		} );
  	},
  
  	fix: function( originalEvent ) {
  		return originalEvent[ jQuery.expando ] ?
  			originalEvent :
  			new jQuery.Event( originalEvent );
  	},
  
  	special: {
  		load: {
  
  			// Prevent triggered image.load events from bubbling to window.load
  			noBubble: true
  		},
  		focus: {
  
  			// Fire native event if possible so blur/focus sequence is correct
  			trigger: function() {
  				if ( this !== safeActiveElement() && this.focus ) {
  					this.focus();
  					return false;
  				}
  			},
  			delegateType: "focusin"
  		},
  		blur: {
  			trigger: function() {
  				if ( this === safeActiveElement() && this.blur ) {
  					this.blur();
  					return false;
  				}
  			},
  			delegateType: "focusout"
  		},
  		click: {
  
  			// For checkbox, fire native event so checked state will be right
  			trigger: function() {
  				if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
  					this.click();
  					return false;
  				}
  			},
  
  			// For cross-browser consistency, don't fire native .click() on links
  			_default: function( event ) {
  				return nodeName( event.target, "a" );
  			}
  		},
  
  		beforeunload: {
  			postDispatch: function( event ) {
  
  				// Support: Firefox 20+
  				// Firefox doesn't alert if the returnValue field is not set.
  				if ( event.result !== undefined && event.originalEvent ) {
  					event.originalEvent.returnValue = event.result;
  				}
  			}
  		}
  	}
  };
  
  jQuery.removeEvent = function( elem, type, handle ) {
  
  	// This "if" is needed for plain objects
  	if ( elem.removeEventListener ) {
  		elem.removeEventListener( type, handle );
  	}
  };
  
  jQuery.Event = function( src, props ) {
  
  	// Allow instantiation without the 'new' keyword
  	if ( !( this instanceof jQuery.Event ) ) {
  		return new jQuery.Event( src, props );
  	}
  
  	// Event object
  	if ( src && src.type ) {
  		this.originalEvent = src;
  		this.type = src.type;
  
  		// Events bubbling up the document may have been marked as prevented
  		// by a handler lower down the tree; reflect the correct value.
  		this.isDefaultPrevented = src.defaultPrevented ||
  				src.defaultPrevented === undefined &&
  
  				// Support: Android <=2.3 only
  				src.returnValue === false ?
  			returnTrue :
  			returnFalse;
  
  		// Create target properties
  		// Support: Safari <=6 - 7 only
  		// Target should not be a text node (#504, #13143)
  		this.target = ( src.target && src.target.nodeType === 3 ) ?
  			src.target.parentNode :
  			src.target;
  
  		this.currentTarget = src.currentTarget;
  		this.relatedTarget = src.relatedTarget;
  
  	// Event type
  	} else {
  		this.type = src;
  	}
  
  	// Put explicitly provided properties onto the event object
  	if ( props ) {
  		jQuery.extend( this, props );
  	}
  
  	// Create a timestamp if incoming event doesn't have one
  	this.timeStamp = src && src.timeStamp || jQuery.now();
  
  	// Mark it as fixed
  	this[ jQuery.expando ] = true;
  };
  
  // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
  // https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
  jQuery.Event.prototype = {
  	constructor: jQuery.Event,
  	isDefaultPrevented: returnFalse,
  	isPropagationStopped: returnFalse,
  	isImmediatePropagationStopped: returnFalse,
  	isSimulated: false,
  
  	preventDefault: function() {
  		var e = this.originalEvent;
  
  		this.isDefaultPrevented = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.preventDefault();
  		}
  	},
  	stopPropagation: function() {
  		var e = this.originalEvent;
  
  		this.isPropagationStopped = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.stopPropagation();
  		}
  	},
  	stopImmediatePropagation: function() {
  		var e = this.originalEvent;
  
  		this.isImmediatePropagationStopped = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.stopImmediatePropagation();
  		}
  
  		this.stopPropagation();
  	}
  };
  
  // Includes all common event props including KeyEvent and MouseEvent specific props
  jQuery.each( {
  	altKey: true,
  	bubbles: true,
  	cancelable: true,
  	changedTouches: true,
  	ctrlKey: true,
  	detail: true,
  	eventPhase: true,
  	metaKey: true,
  	pageX: true,
  	pageY: true,
  	shiftKey: true,
  	view: true,
  	"char": true,
  	charCode: true,
  	key: true,
  	keyCode: true,
  	button: true,
  	buttons: true,
  	clientX: true,
  	clientY: true,
  	offsetX: true,
  	offsetY: true,
  	pointerId: true,
  	pointerType: true,
  	screenX: true,
  	screenY: true,
  	targetTouches: true,
  	toElement: true,
  	touches: true,
  
  	which: function( event ) {
  		var button = event.button;
  
  		// Add which for key events
  		if ( event.which == null && rkeyEvent.test( event.type ) ) {
  			return event.charCode != null ? event.charCode : event.keyCode;
  		}
  
  		// Add which for click: 1 === left; 2 === middle; 3 === right
  		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
  			if ( button & 1 ) {
  				return 1;
  			}
  
  			if ( button & 2 ) {
  				return 3;
  			}
  
  			if ( button & 4 ) {
  				return 2;
  			}
  
  			return 0;
  		}
  
  		return event.which;
  	}
  }, jQuery.event.addProp );
  
  // Create mouseenter/leave events using mouseover/out and event-time checks
  // so that event delegation works in jQuery.
  // Do the same for pointerenter/pointerleave and pointerover/pointerout
  //
  // Support: Safari 7 only
  // Safari sends mouseenter too often; see:
  // https://bugs.chromium.org/p/chromium/issues/detail?id=470258
  // for the description of the bug (it existed in older Chrome versions as well).
  jQuery.each( {
  	mouseenter: "mouseover",
  	mouseleave: "mouseout",
  	pointerenter: "pointerover",
  	pointerleave: "pointerout"
  }, function( orig, fix ) {
  	jQuery.event.special[ orig ] = {
  		delegateType: fix,
  		bindType: fix,
  
  		handle: function( event ) {
  			var ret,
  				target = this,
  				related = event.relatedTarget,
  				handleObj = event.handleObj;
  
  			// For mouseenter/leave call the handler if related is outside the target.
  			// NB: No relatedTarget if the mouse left/entered the browser window
  			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
  				event.type = handleObj.origType;
  				ret = handleObj.handler.apply( this, arguments );
  				event.type = fix;
  			}
  			return ret;
  		}
  	};
  } );
  
  jQuery.fn.extend( {
  
  	on: function( types, selector, data, fn ) {
  		return on( this, types, selector, data, fn );
  	},
  	one: function( types, selector, data, fn ) {
  		return on( this, types, selector, data, fn, 1 );
  	},
  	off: function( types, selector, fn ) {
  		var handleObj, type;
  		if ( types && types.preventDefault && types.handleObj ) {
  
  			// ( event )  dispatched jQuery.Event
  			handleObj = types.handleObj;
  			jQuery( types.delegateTarget ).off(
  				handleObj.namespace ?
  					handleObj.origType + "." + handleObj.namespace :
  					handleObj.origType,
  				handleObj.selector,
  				handleObj.handler
  			);
  			return this;
  		}
  		if ( typeof types === "object" ) {
  
  			// ( types-object [, selector] )
  			for ( type in types ) {
  				this.off( type, selector, types[ type ] );
  			}
  			return this;
  		}
  		if ( selector === false || typeof selector === "function" ) {
  
  			// ( types [, fn] )
  			fn = selector;
  			selector = undefined;
  		}
  		if ( fn === false ) {
  			fn = returnFalse;
  		}
  		return this.each( function() {
  			jQuery.event.remove( this, types, fn, selector );
  		} );
  	}
  } );
  
  
  var
  
  	/* eslint-disable max-len */
  
  	// See https://github.com/eslint/eslint/issues/3229
  	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
  
  	/* eslint-enable */
  
  	// Support: IE <=10 - 11, Edge 12 - 13
  	// In IE/Edge using regex groups here causes severe slowdowns.
  	// See https://connect.microsoft.com/IE/feedback/details/1736512/
  	rnoInnerhtml = /<script|<style|<link/i,
  
  	// checked="checked" or checked
  	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
  	rscriptTypeMasked = /^true\/(.*)/,
  	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
  
  // Prefer a tbody over its parent table for containing new rows
  function manipulationTarget( elem, content ) {
  	if ( nodeName( elem, "table" ) &&
  		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
  
  		return jQuery( ">tbody", elem )[ 0 ] || elem;
  	}
  
  	return elem;
  }
  
  // Replace/restore the type attribute of script elements for safe DOM manipulation
  function disableScript( elem ) {
  	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
  	return elem;
  }
  function restoreScript( elem ) {
  	var match = rscriptTypeMasked.exec( elem.type );
  
  	if ( match ) {
  		elem.type = match[ 1 ];
  	} else {
  		elem.removeAttribute( "type" );
  	}
  
  	return elem;
  }
  
  function cloneCopyEvent( src, dest ) {
  	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
  
  	if ( dest.nodeType !== 1 ) {
  		return;
  	}
  
  	// 1. Copy private data: events, handlers, etc.
  	if ( dataPriv.hasData( src ) ) {
  		pdataOld = dataPriv.access( src );
  		pdataCur = dataPriv.set( dest, pdataOld );
  		events = pdataOld.events;
  
  		if ( events ) {
  			delete pdataCur.handle;
  			pdataCur.events = {};
  
  			for ( type in events ) {
  				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
  					jQuery.event.add( dest, type, events[ type ][ i ] );
  				}
  			}
  		}
  	}
  
  	// 2. Copy user data
  	if ( dataUser.hasData( src ) ) {
  		udataOld = dataUser.access( src );
  		udataCur = jQuery.extend( {}, udataOld );
  
  		dataUser.set( dest, udataCur );
  	}
  }
  
  // Fix IE bugs, see support tests
  function fixInput( src, dest ) {
  	var nodeName = dest.nodeName.toLowerCase();
  
  	// Fails to persist the checked state of a cloned checkbox or radio button.
  	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
  		dest.checked = src.checked;
  
  	// Fails to return the selected option to the default selected state when cloning options
  	} else if ( nodeName === "input" || nodeName === "textarea" ) {
  		dest.defaultValue = src.defaultValue;
  	}
  }
  
  function domManip( collection, args, callback, ignored ) {
  
  	// Flatten any nested arrays
  	args = concat.apply( [], args );
  
  	var fragment, first, scripts, hasScripts, node, doc,
  		i = 0,
  		l = collection.length,
  		iNoClone = l - 1,
  		value = args[ 0 ],
  		isFunction = jQuery.isFunction( value );
  
  	// We can't cloneNode fragments that contain checked, in WebKit
  	if ( isFunction ||
  			( l > 1 && typeof value === "string" &&
  				!support.checkClone && rchecked.test( value ) ) ) {
  		return collection.each( function( index ) {
  			var self = collection.eq( index );
  			if ( isFunction ) {
  				args[ 0 ] = value.call( this, index, self.html() );
  			}
  			domManip( self, args, callback, ignored );
  		} );
  	}
  
  	if ( l ) {
  		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
  		first = fragment.firstChild;
  
  		if ( fragment.childNodes.length === 1 ) {
  			fragment = first;
  		}
  
  		// Require either new content or an interest in ignored elements to invoke the callback
  		if ( first || ignored ) {
  			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
  			hasScripts = scripts.length;
  
  			// Use the original fragment for the last item
  			// instead of the first because it can end up
  			// being emptied incorrectly in certain situations (#8070).
  			for ( ; i < l; i++ ) {
  				node = fragment;
  
  				if ( i !== iNoClone ) {
  					node = jQuery.clone( node, true, true );
  
  					// Keep references to cloned scripts for later restoration
  					if ( hasScripts ) {
  
  						// Support: Android <=4.0 only, PhantomJS 1 only
  						// push.apply(_, arraylike) throws on ancient WebKit
  						jQuery.merge( scripts, getAll( node, "script" ) );
  					}
  				}
  
  				callback.call( collection[ i ], node, i );
  			}
  
  			if ( hasScripts ) {
  				doc = scripts[ scripts.length - 1 ].ownerDocument;
  
  				// Reenable scripts
  				jQuery.map( scripts, restoreScript );
  
  				// Evaluate executable scripts on first document insertion
  				for ( i = 0; i < hasScripts; i++ ) {
  					node = scripts[ i ];
  					if ( rscriptType.test( node.type || "" ) &&
  						!dataPriv.access( node, "globalEval" ) &&
  						jQuery.contains( doc, node ) ) {
  
  						if ( node.src ) {
  
  							// Optional AJAX dependency, but won't run scripts if not present
  							if ( jQuery._evalUrl ) {
  								jQuery._evalUrl( node.src );
  							}
  						} else {
  							DOMEval( node.textContent.replace( rcleanScript, "" ), doc );
  						}
  					}
  				}
  			}
  		}
  	}
  
  	return collection;
  }
  
  function remove( elem, selector, keepData ) {
  	var node,
  		nodes = selector ? jQuery.filter( selector, elem ) : elem,
  		i = 0;
  
  	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
  		if ( !keepData && node.nodeType === 1 ) {
  			jQuery.cleanData( getAll( node ) );
  		}
  
  		if ( node.parentNode ) {
  			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
  				setGlobalEval( getAll( node, "script" ) );
  			}
  			node.parentNode.removeChild( node );
  		}
  	}
  
  	return elem;
  }
  
  jQuery.extend( {
  	htmlPrefilter: function( html ) {
  		return html.replace( rxhtmlTag, "<$1></$2>" );
  	},
  
  	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
  		var i, l, srcElements, destElements,
  			clone = elem.cloneNode( true ),
  			inPage = jQuery.contains( elem.ownerDocument, elem );
  
  		// Fix IE cloning issues
  		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
  				!jQuery.isXMLDoc( elem ) ) {
  
  			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
  			destElements = getAll( clone );
  			srcElements = getAll( elem );
  
  			for ( i = 0, l = srcElements.length; i < l; i++ ) {
  				fixInput( srcElements[ i ], destElements[ i ] );
  			}
  		}
  
  		// Copy the events from the original to the clone
  		if ( dataAndEvents ) {
  			if ( deepDataAndEvents ) {
  				srcElements = srcElements || getAll( elem );
  				destElements = destElements || getAll( clone );
  
  				for ( i = 0, l = srcElements.length; i < l; i++ ) {
  					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
  				}
  			} else {
  				cloneCopyEvent( elem, clone );
  			}
  		}
  
  		// Preserve script evaluation history
  		destElements = getAll( clone, "script" );
  		if ( destElements.length > 0 ) {
  			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
  		}
  
  		// Return the cloned set
  		return clone;
  	},
  
  	cleanData: function( elems ) {
  		var data, elem, type,
  			special = jQuery.event.special,
  			i = 0;
  
  		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
  			if ( acceptData( elem ) ) {
  				if ( ( data = elem[ dataPriv.expando ] ) ) {
  					if ( data.events ) {
  						for ( type in data.events ) {
  							if ( special[ type ] ) {
  								jQuery.event.remove( elem, type );
  
  							// This is a shortcut to avoid jQuery.event.remove's overhead
  							} else {
  								jQuery.removeEvent( elem, type, data.handle );
  							}
  						}
  					}
  
  					// Support: Chrome <=35 - 45+
  					// Assign undefined instead of using delete, see Data#remove
  					elem[ dataPriv.expando ] = undefined;
  				}
  				if ( elem[ dataUser.expando ] ) {
  
  					// Support: Chrome <=35 - 45+
  					// Assign undefined instead of using delete, see Data#remove
  					elem[ dataUser.expando ] = undefined;
  				}
  			}
  		}
  	}
  } );
  
  jQuery.fn.extend( {
  	detach: function( selector ) {
  		return remove( this, selector, true );
  	},
  
  	remove: function( selector ) {
  		return remove( this, selector );
  	},
  
  	text: function( value ) {
  		return access( this, function( value ) {
  			return value === undefined ?
  				jQuery.text( this ) :
  				this.empty().each( function() {
  					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  						this.textContent = value;
  					}
  				} );
  		}, null, value, arguments.length );
  	},
  
  	append: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  				var target = manipulationTarget( this, elem );
  				target.appendChild( elem );
  			}
  		} );
  	},
  
  	prepend: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  				var target = manipulationTarget( this, elem );
  				target.insertBefore( elem, target.firstChild );
  			}
  		} );
  	},
  
  	before: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.parentNode ) {
  				this.parentNode.insertBefore( elem, this );
  			}
  		} );
  	},
  
  	after: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.parentNode ) {
  				this.parentNode.insertBefore( elem, this.nextSibling );
  			}
  		} );
  	},
  
  	empty: function() {
  		var elem,
  			i = 0;
  
  		for ( ; ( elem = this[ i ] ) != null; i++ ) {
  			if ( elem.nodeType === 1 ) {
  
  				// Prevent memory leaks
  				jQuery.cleanData( getAll( elem, false ) );
  
  				// Remove any remaining nodes
  				elem.textContent = "";
  			}
  		}
  
  		return this;
  	},
  
  	clone: function( dataAndEvents, deepDataAndEvents ) {
  		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
  		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
  
  		return this.map( function() {
  			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
  		} );
  	},
  
  	html: function( value ) {
  		return access( this, function( value ) {
  			var elem = this[ 0 ] || {},
  				i = 0,
  				l = this.length;
  
  			if ( value === undefined && elem.nodeType === 1 ) {
  				return elem.innerHTML;
  			}
  
  			// See if we can take a shortcut and just use innerHTML
  			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
  				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
  
  				value = jQuery.htmlPrefilter( value );
  
  				try {
  					for ( ; i < l; i++ ) {
  						elem = this[ i ] || {};
  
  						// Remove element nodes and prevent memory leaks
  						if ( elem.nodeType === 1 ) {
  							jQuery.cleanData( getAll( elem, false ) );
  							elem.innerHTML = value;
  						}
  					}
  
  					elem = 0;
  
  				// If using innerHTML throws an exception, use the fallback method
  				} catch ( e ) {}
  			}
  
  			if ( elem ) {
  				this.empty().append( value );
  			}
  		}, null, value, arguments.length );
  	},
  
  	replaceWith: function() {
  		var ignored = [];
  
  		// Make the changes, replacing each non-ignored context element with the new content
  		return domManip( this, arguments, function( elem ) {
  			var parent = this.parentNode;
  
  			if ( jQuery.inArray( this, ignored ) < 0 ) {
  				jQuery.cleanData( getAll( this ) );
  				if ( parent ) {
  					parent.replaceChild( elem, this );
  				}
  			}
  
  		// Force callback invocation
  		}, ignored );
  	}
  } );
  
  jQuery.each( {
  	appendTo: "append",
  	prependTo: "prepend",
  	insertBefore: "before",
  	insertAfter: "after",
  	replaceAll: "replaceWith"
  }, function( name, original ) {
  	jQuery.fn[ name ] = function( selector ) {
  		var elems,
  			ret = [],
  			insert = jQuery( selector ),
  			last = insert.length - 1,
  			i = 0;
  
  		for ( ; i <= last; i++ ) {
  			elems = i === last ? this : this.clone( true );
  			jQuery( insert[ i ] )[ original ]( elems );
  
  			// Support: Android <=4.0 only, PhantomJS 1 only
  			// .get() because push.apply(_, arraylike) throws on ancient WebKit
  			push.apply( ret, elems.get() );
  		}
  
  		return this.pushStack( ret );
  	};
  } );
  var rmargin = ( /^margin/ );
  
  var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
  
  var getStyles = function( elem ) {
  
  		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
  		// IE throws on elements created in popups
  		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
  		var view = elem.ownerDocument.defaultView;
  
  		if ( !view || !view.opener ) {
  			view = window;
  		}
  
  		return view.getComputedStyle( elem );
  	};
  
  
  
  ( function() {
  
  	// Executing both pixelPosition & boxSizingReliable tests require only one layout
  	// so they're executed at the same time to save the second computation.
  	function computeStyleTests() {
  
  		// This is a singleton, we need to execute it only once
  		if ( !div ) {
  			return;
  		}
  
  		div.style.cssText =
  			"box-sizing:border-box;" +
  			"position:relative;display:block;" +
  			"margin:auto;border:1px;padding:1px;" +
  			"top:1%;width:50%";
  		div.innerHTML = "";
  		documentElement.appendChild( container );
  
  		var divStyle = window.getComputedStyle( div );
  		pixelPositionVal = divStyle.top !== "1%";
  
  		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
  		reliableMarginLeftVal = divStyle.marginLeft === "2px";
  		boxSizingReliableVal = divStyle.width === "4px";
  
  		// Support: Android 4.0 - 4.3 only
  		// Some styles come back with percentage values, even though they shouldn't
  		div.style.marginRight = "50%";
  		pixelMarginRightVal = divStyle.marginRight === "4px";
  
  		documentElement.removeChild( container );
  
  		// Nullify the div so it wouldn't be stored in the memory and
  		// it will also be a sign that checks already performed
  		div = null;
  	}
  
  	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
  		container = document.createElement( "div" ),
  		div = document.createElement( "div" );
  
  	// Finish early in limited (non-browser) environments
  	if ( !div.style ) {
  		return;
  	}
  
  	// Support: IE <=9 - 11 only
  	// Style of cloned element affects source element cloned (#8908)
  	div.style.backgroundClip = "content-box";
  	div.cloneNode( true ).style.backgroundClip = "";
  	support.clearCloneStyle = div.style.backgroundClip === "content-box";
  
  	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
  		"padding:0;margin-top:1px;position:absolute";
  	container.appendChild( div );
  
  	jQuery.extend( support, {
  		pixelPosition: function() {
  			computeStyleTests();
  			return pixelPositionVal;
  		},
  		boxSizingReliable: function() {
  			computeStyleTests();
  			return boxSizingReliableVal;
  		},
  		pixelMarginRight: function() {
  			computeStyleTests();
  			return pixelMarginRightVal;
  		},
  		reliableMarginLeft: function() {
  			computeStyleTests();
  			return reliableMarginLeftVal;
  		}
  	} );
  } )();
  
  
  function curCSS( elem, name, computed ) {
  	var width, minWidth, maxWidth, ret,
  
  		// Support: Firefox 51+
  		// Retrieving style before computed somehow
  		// fixes an issue with getting wrong values
  		// on detached elements
  		style = elem.style;
  
  	computed = computed || getStyles( elem );
  
  	// getPropertyValue is needed for:
  	//   .css('filter') (IE 9 only, #12537)
  	//   .css('--customProperty) (#3144)
  	if ( computed ) {
  		ret = computed.getPropertyValue( name ) || computed[ name ];
  
  		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
  			ret = jQuery.style( elem, name );
  		}
  
  		// A tribute to the "awesome hack by Dean Edwards"
  		// Android Browser returns percentage for some values,
  		// but width seems to be reliably pixels.
  		// This is against the CSSOM draft spec:
  		// https://drafts.csswg.org/cssom/#resolved-values
  		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
  
  			// Remember the original values
  			width = style.width;
  			minWidth = style.minWidth;
  			maxWidth = style.maxWidth;
  
  			// Put in the new values to get a computed value out
  			style.minWidth = style.maxWidth = style.width = ret;
  			ret = computed.width;
  
  			// Revert the changed values
  			style.width = width;
  			style.minWidth = minWidth;
  			style.maxWidth = maxWidth;
  		}
  	}
  
  	return ret !== undefined ?
  
  		// Support: IE <=9 - 11 only
  		// IE returns zIndex value as an integer.
  		ret + "" :
  		ret;
  }
  
  
  function addGetHookIf( conditionFn, hookFn ) {
  
  	// Define the hook, we'll check on the first run if it's really needed.
  	return {
  		get: function() {
  			if ( conditionFn() ) {
  
  				// Hook not needed (or it's not possible to use it due
  				// to missing dependency), remove it.
  				delete this.get;
  				return;
  			}
  
  			// Hook needed; redefine it so that the support test is not executed again.
  			return ( this.get = hookFn ).apply( this, arguments );
  		}
  	};
  }
  
  
  var
  
  	// Swappable if display is none or starts with table
  	// except "table", "table-cell", or "table-caption"
  	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
  	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
  	rcustomProp = /^--/,
  	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
  	cssNormalTransform = {
  		letterSpacing: "0",
  		fontWeight: "400"
  	},
  
  	cssPrefixes = [ "Webkit", "Moz", "ms" ],
  	emptyStyle = document.createElement( "div" ).style;
  
  // Return a css property mapped to a potentially vendor prefixed property
  function vendorPropName( name ) {
  
  	// Shortcut for names that are not vendor prefixed
  	if ( name in emptyStyle ) {
  		return name;
  	}
  
  	// Check for vendor prefixed names
  	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
  		i = cssPrefixes.length;
  
  	while ( i-- ) {
  		name = cssPrefixes[ i ] + capName;
  		if ( name in emptyStyle ) {
  			return name;
  		}
  	}
  }
  
  // Return a property mapped along what jQuery.cssProps suggests or to
  // a vendor prefixed property.
  function finalPropName( name ) {
  	var ret = jQuery.cssProps[ name ];
  	if ( !ret ) {
  		ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
  	}
  	return ret;
  }
  
  function setPositiveNumber( elem, value, subtract ) {
  
  	// Any relative (+/-) values have already been
  	// normalized at this point
  	var matches = rcssNum.exec( value );
  	return matches ?
  
  		// Guard against undefined "subtract", e.g., when used as in cssHooks
  		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
  		value;
  }
  
  function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
  	var i,
  		val = 0;
  
  	// If we already have the right measurement, avoid augmentation
  	if ( extra === ( isBorderBox ? "border" : "content" ) ) {
  		i = 4;
  
  	// Otherwise initialize for horizontal or vertical properties
  	} else {
  		i = name === "width" ? 1 : 0;
  	}
  
  	for ( ; i < 4; i += 2 ) {
  
  		// Both box models exclude margin, so add it if we want it
  		if ( extra === "margin" ) {
  			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
  		}
  
  		if ( isBorderBox ) {
  
  			// border-box includes padding, so remove it if we want content
  			if ( extra === "content" ) {
  				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
  			}
  
  			// At this point, extra isn't border nor margin, so remove border
  			if ( extra !== "margin" ) {
  				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
  			}
  		} else {
  
  			// At this point, extra isn't content, so add padding
  			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
  
  			// At this point, extra isn't content nor padding, so add border
  			if ( extra !== "padding" ) {
  				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
  			}
  		}
  	}
  
  	return val;
  }
  
  function getWidthOrHeight( elem, name, extra ) {
  
  	// Start with computed style
  	var valueIsBorderBox,
  		styles = getStyles( elem ),
  		val = curCSS( elem, name, styles ),
  		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
  
  	// Computed unit is not pixels. Stop here and return.
  	if ( rnumnonpx.test( val ) ) {
  		return val;
  	}
  
  	// Check for style in case a browser which returns unreliable values
  	// for getComputedStyle silently falls back to the reliable elem.style
  	valueIsBorderBox = isBorderBox &&
  		( support.boxSizingReliable() || val === elem.style[ name ] );
  
  	// Fall back to offsetWidth/Height when value is "auto"
  	// This happens for inline elements with no explicit setting (gh-3571)
  	if ( val === "auto" ) {
  		val = elem[ "offset" + name[ 0 ].toUpperCase() + name.slice( 1 ) ];
  	}
  
  	// Normalize "", auto, and prepare for extra
  	val = parseFloat( val ) || 0;
  
  	// Use the active box-sizing model to add/subtract irrelevant styles
  	return ( val +
  		augmentWidthOrHeight(
  			elem,
  			name,
  			extra || ( isBorderBox ? "border" : "content" ),
  			valueIsBorderBox,
  			styles
  		)
  	) + "px";
  }
  
  jQuery.extend( {
  
  	// Add in style property hooks for overriding the default
  	// behavior of getting and setting a style property
  	cssHooks: {
  		opacity: {
  			get: function( elem, computed ) {
  				if ( computed ) {
  
  					// We should always get a number back from opacity
  					var ret = curCSS( elem, "opacity" );
  					return ret === "" ? "1" : ret;
  				}
  			}
  		}
  	},
  
  	// Don't automatically add "px" to these possibly-unitless properties
  	cssNumber: {
  		"animationIterationCount": true,
  		"columnCount": true,
  		"fillOpacity": true,
  		"flexGrow": true,
  		"flexShrink": true,
  		"fontWeight": true,
  		"lineHeight": true,
  		"opacity": true,
  		"order": true,
  		"orphans": true,
  		"widows": true,
  		"zIndex": true,
  		"zoom": true
  	},
  
  	// Add in properties whose names you wish to fix before
  	// setting or getting the value
  	cssProps: {
  		"float": "cssFloat"
  	},
  
  	// Get and set the style property on a DOM Node
  	style: function( elem, name, value, extra ) {
  
  		// Don't set styles on text and comment nodes
  		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
  			return;
  		}
  
  		// Make sure that we're working with the right name
  		var ret, type, hooks,
  			origName = jQuery.camelCase( name ),
  			isCustomProp = rcustomProp.test( name ),
  			style = elem.style;
  
  		// Make sure that we're working with the right name. We don't
  		// want to query the value if it is a CSS custom property
  		// since they are user-defined.
  		if ( !isCustomProp ) {
  			name = finalPropName( origName );
  		}
  
  		// Gets hook for the prefixed version, then unprefixed version
  		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
  
  		// Check if we're setting a value
  		if ( value !== undefined ) {
  			type = typeof value;
  
  			// Convert "+=" or "-=" to relative numbers (#7345)
  			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
  				value = adjustCSS( elem, name, ret );
  
  				// Fixes bug #9237
  				type = "number";
  			}
  
  			// Make sure that null and NaN values aren't set (#7116)
  			if ( value == null || value !== value ) {
  				return;
  			}
  
  			// If a number was passed in, add the unit (except for certain CSS properties)
  			if ( type === "number" ) {
  				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
  			}
  
  			// background-* props affect original clone's values
  			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
  				style[ name ] = "inherit";
  			}
  
  			// If a hook was provided, use that value, otherwise just set the specified value
  			if ( !hooks || !( "set" in hooks ) ||
  				( value = hooks.set( elem, value, extra ) ) !== undefined ) {
  
  				if ( isCustomProp ) {
  					style.setProperty( name, value );
  				} else {
  					style[ name ] = value;
  				}
  			}
  
  		} else {
  
  			// If a hook was provided get the non-computed value from there
  			if ( hooks && "get" in hooks &&
  				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {
  
  				return ret;
  			}
  
  			// Otherwise just get the value from the style object
  			return style[ name ];
  		}
  	},
  
  	css: function( elem, name, extra, styles ) {
  		var val, num, hooks,
  			origName = jQuery.camelCase( name ),
  			isCustomProp = rcustomProp.test( name );
  
  		// Make sure that we're working with the right name. We don't
  		// want to modify the value if it is a CSS custom property
  		// since they are user-defined.
  		if ( !isCustomProp ) {
  			name = finalPropName( origName );
  		}
  
  		// Try prefixed name followed by the unprefixed name
  		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
  
  		// If a hook was provided get the computed value from there
  		if ( hooks && "get" in hooks ) {
  			val = hooks.get( elem, true, extra );
  		}
  
  		// Otherwise, if a way to get the computed value exists, use that
  		if ( val === undefined ) {
  			val = curCSS( elem, name, styles );
  		}
  
  		// Convert "normal" to computed value
  		if ( val === "normal" && name in cssNormalTransform ) {
  			val = cssNormalTransform[ name ];
  		}
  
  		// Make numeric if forced or a qualifier was provided and val looks numeric
  		if ( extra === "" || extra ) {
  			num = parseFloat( val );
  			return extra === true || isFinite( num ) ? num || 0 : val;
  		}
  
  		return val;
  	}
  } );
  
  jQuery.each( [ "height", "width" ], function( i, name ) {
  	jQuery.cssHooks[ name ] = {
  		get: function( elem, computed, extra ) {
  			if ( computed ) {
  
  				// Certain elements can have dimension info if we invisibly show them
  				// but it must have a current display style that would benefit
  				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
  
  					// Support: Safari 8+
  					// Table columns in Safari have non-zero offsetWidth & zero
  					// getBoundingClientRect().width unless display is changed.
  					// Support: IE <=11 only
  					// Running getBoundingClientRect on a disconnected node
  					// in IE throws an error.
  					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
  						swap( elem, cssShow, function() {
  							return getWidthOrHeight( elem, name, extra );
  						} ) :
  						getWidthOrHeight( elem, name, extra );
  			}
  		},
  
  		set: function( elem, value, extra ) {
  			var matches,
  				styles = extra && getStyles( elem ),
  				subtract = extra && augmentWidthOrHeight(
  					elem,
  					name,
  					extra,
  					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
  					styles
  				);
  
  			// Convert to pixels if value adjustment is needed
  			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
  				( matches[ 3 ] || "px" ) !== "px" ) {
  
  				elem.style[ name ] = value;
  				value = jQuery.css( elem, name );
  			}
  
  			return setPositiveNumber( elem, value, subtract );
  		}
  	};
  } );
  
  jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
  	function( elem, computed ) {
  		if ( computed ) {
  			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
  				elem.getBoundingClientRect().left -
  					swap( elem, { marginLeft: 0 }, function() {
  						return elem.getBoundingClientRect().left;
  					} )
  				) + "px";
  		}
  	}
  );
  
  // These hooks are used by animate to expand properties
  jQuery.each( {
  	margin: "",
  	padding: "",
  	border: "Width"
  }, function( prefix, suffix ) {
  	jQuery.cssHooks[ prefix + suffix ] = {
  		expand: function( value ) {
  			var i = 0,
  				expanded = {},
  
  				// Assumes a single number if not a string
  				parts = typeof value === "string" ? value.split( " " ) : [ value ];
  
  			for ( ; i < 4; i++ ) {
  				expanded[ prefix + cssExpand[ i ] + suffix ] =
  					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
  			}
  
  			return expanded;
  		}
  	};
  
  	if ( !rmargin.test( prefix ) ) {
  		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
  	}
  } );
  
  jQuery.fn.extend( {
  	css: function( name, value ) {
  		return access( this, function( elem, name, value ) {
  			var styles, len,
  				map = {},
  				i = 0;
  
  			if ( Array.isArray( name ) ) {
  				styles = getStyles( elem );
  				len = name.length;
  
  				for ( ; i < len; i++ ) {
  					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
  				}
  
  				return map;
  			}
  
  			return value !== undefined ?
  				jQuery.style( elem, name, value ) :
  				jQuery.css( elem, name );
  		}, name, value, arguments.length > 1 );
  	}
  } );
  
  
  function Tween( elem, options, prop, end, easing ) {
  	return new Tween.prototype.init( elem, options, prop, end, easing );
  }
  jQuery.Tween = Tween;
  
  Tween.prototype = {
  	constructor: Tween,
  	init: function( elem, options, prop, end, easing, unit ) {
  		this.elem = elem;
  		this.prop = prop;
  		this.easing = easing || jQuery.easing._default;
  		this.options = options;
  		this.start = this.now = this.cur();
  		this.end = end;
  		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
  	},
  	cur: function() {
  		var hooks = Tween.propHooks[ this.prop ];
  
  		return hooks && hooks.get ?
  			hooks.get( this ) :
  			Tween.propHooks._default.get( this );
  	},
  	run: function( percent ) {
  		var eased,
  			hooks = Tween.propHooks[ this.prop ];
  
  		if ( this.options.duration ) {
  			this.pos = eased = jQuery.easing[ this.easing ](
  				percent, this.options.duration * percent, 0, 1, this.options.duration
  			);
  		} else {
  			this.pos = eased = percent;
  		}
  		this.now = ( this.end - this.start ) * eased + this.start;
  
  		if ( this.options.step ) {
  			this.options.step.call( this.elem, this.now, this );
  		}
  
  		if ( hooks && hooks.set ) {
  			hooks.set( this );
  		} else {
  			Tween.propHooks._default.set( this );
  		}
  		return this;
  	}
  };
  
  Tween.prototype.init.prototype = Tween.prototype;
  
  Tween.propHooks = {
  	_default: {
  		get: function( tween ) {
  			var result;
  
  			// Use a property on the element directly when it is not a DOM element,
  			// or when there is no matching style property that exists.
  			if ( tween.elem.nodeType !== 1 ||
  				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
  				return tween.elem[ tween.prop ];
  			}
  
  			// Passing an empty string as a 3rd parameter to .css will automatically
  			// attempt a parseFloat and fallback to a string if the parse fails.
  			// Simple values such as "10px" are parsed to Float;
  			// complex values such as "rotate(1rad)" are returned as-is.
  			result = jQuery.css( tween.elem, tween.prop, "" );
  
  			// Empty strings, null, undefined and "auto" are converted to 0.
  			return !result || result === "auto" ? 0 : result;
  		},
  		set: function( tween ) {
  
  			// Use step hook for back compat.
  			// Use cssHook if its there.
  			// Use .style if available and use plain properties where available.
  			if ( jQuery.fx.step[ tween.prop ] ) {
  				jQuery.fx.step[ tween.prop ]( tween );
  			} else if ( tween.elem.nodeType === 1 &&
  				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
  					jQuery.cssHooks[ tween.prop ] ) ) {
  				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
  			} else {
  				tween.elem[ tween.prop ] = tween.now;
  			}
  		}
  	}
  };
  
  // Support: IE <=9 only
  // Panic based approach to setting things on disconnected nodes
  Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
  	set: function( tween ) {
  		if ( tween.elem.nodeType && tween.elem.parentNode ) {
  			tween.elem[ tween.prop ] = tween.now;
  		}
  	}
  };
  
  jQuery.easing = {
  	linear: function( p ) {
  		return p;
  	},
  	swing: function( p ) {
  		return 0.5 - Math.cos( p * Math.PI ) / 2;
  	},
  	_default: "swing"
  };
  
  jQuery.fx = Tween.prototype.init;
  
  // Back compat <1.8 extension point
  jQuery.fx.step = {};
  
  
  
  
  var
  	fxNow, inProgress,
  	rfxtypes = /^(?:toggle|show|hide)$/,
  	rrun = /queueHooks$/;
  
  function schedule() {
  	if ( inProgress ) {
  		if ( document.hidden === false && window.requestAnimationFrame ) {
  			window.requestAnimationFrame( schedule );
  		} else {
  			window.setTimeout( schedule, jQuery.fx.interval );
  		}
  
  		jQuery.fx.tick();
  	}
  }
  
  // Animations created synchronously will run synchronously
  function createFxNow() {
  	window.setTimeout( function() {
  		fxNow = undefined;
  	} );
  	return ( fxNow = jQuery.now() );
  }
  
  // Generate parameters to create a standard animation
  function genFx( type, includeWidth ) {
  	var which,
  		i = 0,
  		attrs = { height: type };
  
  	// If we include width, step value is 1 to do all cssExpand values,
  	// otherwise step value is 2 to skip over Left and Right
  	includeWidth = includeWidth ? 1 : 0;
  	for ( ; i < 4; i += 2 - includeWidth ) {
  		which = cssExpand[ i ];
  		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
  	}
  
  	if ( includeWidth ) {
  		attrs.opacity = attrs.width = type;
  	}
  
  	return attrs;
  }
  
  function createTween( value, prop, animation ) {
  	var tween,
  		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
  		index = 0,
  		length = collection.length;
  	for ( ; index < length; index++ ) {
  		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {
  
  			// We're done with this property
  			return tween;
  		}
  	}
  }
  
  function defaultPrefilter( elem, props, opts ) {
  	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
  		isBox = "width" in props || "height" in props,
  		anim = this,
  		orig = {},
  		style = elem.style,
  		hidden = elem.nodeType && isHiddenWithinTree( elem ),
  		dataShow = dataPriv.get( elem, "fxshow" );
  
  	// Queue-skipping animations hijack the fx hooks
  	if ( !opts.queue ) {
  		hooks = jQuery._queueHooks( elem, "fx" );
  		if ( hooks.unqueued == null ) {
  			hooks.unqueued = 0;
  			oldfire = hooks.empty.fire;
  			hooks.empty.fire = function() {
  				if ( !hooks.unqueued ) {
  					oldfire();
  				}
  			};
  		}
  		hooks.unqueued++;
  
  		anim.always( function() {
  
  			// Ensure the complete handler is called before this completes
  			anim.always( function() {
  				hooks.unqueued--;
  				if ( !jQuery.queue( elem, "fx" ).length ) {
  					hooks.empty.fire();
  				}
  			} );
  		} );
  	}
  
  	// Detect show/hide animations
  	for ( prop in props ) {
  		value = props[ prop ];
  		if ( rfxtypes.test( value ) ) {
  			delete props[ prop ];
  			toggle = toggle || value === "toggle";
  			if ( value === ( hidden ? "hide" : "show" ) ) {
  
  				// Pretend to be hidden if this is a "show" and
  				// there is still data from a stopped show/hide
  				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
  					hidden = true;
  
  				// Ignore all other no-op show/hide data
  				} else {
  					continue;
  				}
  			}
  			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
  		}
  	}
  
  	// Bail out if this is a no-op like .hide().hide()
  	propTween = !jQuery.isEmptyObject( props );
  	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
  		return;
  	}
  
  	// Restrict "overflow" and "display" styles during box animations
  	if ( isBox && elem.nodeType === 1 ) {
  
  		// Support: IE <=9 - 11, Edge 12 - 13
  		// Record all 3 overflow attributes because IE does not infer the shorthand
  		// from identically-valued overflowX and overflowY
  		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
  
  		// Identify a display type, preferring old show/hide data over the CSS cascade
  		restoreDisplay = dataShow && dataShow.display;
  		if ( restoreDisplay == null ) {
  			restoreDisplay = dataPriv.get( elem, "display" );
  		}
  		display = jQuery.css( elem, "display" );
  		if ( display === "none" ) {
  			if ( restoreDisplay ) {
  				display = restoreDisplay;
  			} else {
  
  				// Get nonempty value(s) by temporarily forcing visibility
  				showHide( [ elem ], true );
  				restoreDisplay = elem.style.display || restoreDisplay;
  				display = jQuery.css( elem, "display" );
  				showHide( [ elem ] );
  			}
  		}
  
  		// Animate inline elements as inline-block
  		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
  			if ( jQuery.css( elem, "float" ) === "none" ) {
  
  				// Restore the original display value at the end of pure show/hide animations
  				if ( !propTween ) {
  					anim.done( function() {
  						style.display = restoreDisplay;
  					} );
  					if ( restoreDisplay == null ) {
  						display = style.display;
  						restoreDisplay = display === "none" ? "" : display;
  					}
  				}
  				style.display = "inline-block";
  			}
  		}
  	}
  
  	if ( opts.overflow ) {
  		style.overflow = "hidden";
  		anim.always( function() {
  			style.overflow = opts.overflow[ 0 ];
  			style.overflowX = opts.overflow[ 1 ];
  			style.overflowY = opts.overflow[ 2 ];
  		} );
  	}
  
  	// Implement show/hide animations
  	propTween = false;
  	for ( prop in orig ) {
  
  		// General show/hide setup for this element animation
  		if ( !propTween ) {
  			if ( dataShow ) {
  				if ( "hidden" in dataShow ) {
  					hidden = dataShow.hidden;
  				}
  			} else {
  				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
  			}
  
  			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
  			if ( toggle ) {
  				dataShow.hidden = !hidden;
  			}
  
  			// Show elements before animating them
  			if ( hidden ) {
  				showHide( [ elem ], true );
  			}
  
  			/* eslint-disable no-loop-func */
  
  			anim.done( function() {
  
  			/* eslint-enable no-loop-func */
  
  				// The final step of a "hide" animation is actually hiding the element
  				if ( !hidden ) {
  					showHide( [ elem ] );
  				}
  				dataPriv.remove( elem, "fxshow" );
  				for ( prop in orig ) {
  					jQuery.style( elem, prop, orig[ prop ] );
  				}
  			} );
  		}
  
  		// Per-property setup
  		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
  		if ( !( prop in dataShow ) ) {
  			dataShow[ prop ] = propTween.start;
  			if ( hidden ) {
  				propTween.end = propTween.start;
  				propTween.start = 0;
  			}
  		}
  	}
  }
  
  function propFilter( props, specialEasing ) {
  	var index, name, easing, value, hooks;
  
  	// camelCase, specialEasing and expand cssHook pass
  	for ( index in props ) {
  		name = jQuery.camelCase( index );
  		easing = specialEasing[ name ];
  		value = props[ index ];
  		if ( Array.isArray( value ) ) {
  			easing = value[ 1 ];
  			value = props[ index ] = value[ 0 ];
  		}
  
  		if ( index !== name ) {
  			props[ name ] = value;
  			delete props[ index ];
  		}
  
  		hooks = jQuery.cssHooks[ name ];
  		if ( hooks && "expand" in hooks ) {
  			value = hooks.expand( value );
  			delete props[ name ];
  
  			// Not quite $.extend, this won't overwrite existing keys.
  			// Reusing 'index' because we have the correct "name"
  			for ( index in value ) {
  				if ( !( index in props ) ) {
  					props[ index ] = value[ index ];
  					specialEasing[ index ] = easing;
  				}
  			}
  		} else {
  			specialEasing[ name ] = easing;
  		}
  	}
  }
  
  function Animation( elem, properties, options ) {
  	var result,
  		stopped,
  		index = 0,
  		length = Animation.prefilters.length,
  		deferred = jQuery.Deferred().always( function() {
  
  			// Don't match elem in the :animated selector
  			delete tick.elem;
  		} ),
  		tick = function() {
  			if ( stopped ) {
  				return false;
  			}
  			var currentTime = fxNow || createFxNow(),
  				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
  
  				// Support: Android 2.3 only
  				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
  				temp = remaining / animation.duration || 0,
  				percent = 1 - temp,
  				index = 0,
  				length = animation.tweens.length;
  
  			for ( ; index < length; index++ ) {
  				animation.tweens[ index ].run( percent );
  			}
  
  			deferred.notifyWith( elem, [ animation, percent, remaining ] );
  
  			// If there's more to do, yield
  			if ( percent < 1 && length ) {
  				return remaining;
  			}
  
  			// If this was an empty animation, synthesize a final progress notification
  			if ( !length ) {
  				deferred.notifyWith( elem, [ animation, 1, 0 ] );
  			}
  
  			// Resolve the animation and report its conclusion
  			deferred.resolveWith( elem, [ animation ] );
  			return false;
  		},
  		animation = deferred.promise( {
  			elem: elem,
  			props: jQuery.extend( {}, properties ),
  			opts: jQuery.extend( true, {
  				specialEasing: {},
  				easing: jQuery.easing._default
  			}, options ),
  			originalProperties: properties,
  			originalOptions: options,
  			startTime: fxNow || createFxNow(),
  			duration: options.duration,
  			tweens: [],
  			createTween: function( prop, end ) {
  				var tween = jQuery.Tween( elem, animation.opts, prop, end,
  						animation.opts.specialEasing[ prop ] || animation.opts.easing );
  				animation.tweens.push( tween );
  				return tween;
  			},
  			stop: function( gotoEnd ) {
  				var index = 0,
  
  					// If we are going to the end, we want to run all the tweens
  					// otherwise we skip this part
  					length = gotoEnd ? animation.tweens.length : 0;
  				if ( stopped ) {
  					return this;
  				}
  				stopped = true;
  				for ( ; index < length; index++ ) {
  					animation.tweens[ index ].run( 1 );
  				}
  
  				// Resolve when we played the last frame; otherwise, reject
  				if ( gotoEnd ) {
  					deferred.notifyWith( elem, [ animation, 1, 0 ] );
  					deferred.resolveWith( elem, [ animation, gotoEnd ] );
  				} else {
  					deferred.rejectWith( elem, [ animation, gotoEnd ] );
  				}
  				return this;
  			}
  		} ),
  		props = animation.props;
  
  	propFilter( props, animation.opts.specialEasing );
  
  	for ( ; index < length; index++ ) {
  		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
  		if ( result ) {
  			if ( jQuery.isFunction( result.stop ) ) {
  				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
  					jQuery.proxy( result.stop, result );
  			}
  			return result;
  		}
  	}
  
  	jQuery.map( props, createTween, animation );
  
  	if ( jQuery.isFunction( animation.opts.start ) ) {
  		animation.opts.start.call( elem, animation );
  	}
  
  	// Attach callbacks from options
  	animation
  		.progress( animation.opts.progress )
  		.done( animation.opts.done, animation.opts.complete )
  		.fail( animation.opts.fail )
  		.always( animation.opts.always );
  
  	jQuery.fx.timer(
  		jQuery.extend( tick, {
  			elem: elem,
  			anim: animation,
  			queue: animation.opts.queue
  		} )
  	);
  
  	return animation;
  }
  
  jQuery.Animation = jQuery.extend( Animation, {
  
  	tweeners: {
  		"*": [ function( prop, value ) {
  			var tween = this.createTween( prop, value );
  			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
  			return tween;
  		} ]
  	},
  
  	tweener: function( props, callback ) {
  		if ( jQuery.isFunction( props ) ) {
  			callback = props;
  			props = [ "*" ];
  		} else {
  			props = props.match( rnothtmlwhite );
  		}
  
  		var prop,
  			index = 0,
  			length = props.length;
  
  		for ( ; index < length; index++ ) {
  			prop = props[ index ];
  			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
  			Animation.tweeners[ prop ].unshift( callback );
  		}
  	},
  
  	prefilters: [ defaultPrefilter ],
  
  	prefilter: function( callback, prepend ) {
  		if ( prepend ) {
  			Animation.prefilters.unshift( callback );
  		} else {
  			Animation.prefilters.push( callback );
  		}
  	}
  } );
  
  jQuery.speed = function( speed, easing, fn ) {
  	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
  		complete: fn || !fn && easing ||
  			jQuery.isFunction( speed ) && speed,
  		duration: speed,
  		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
  	};
  
  	// Go to the end state if fx are off
  	if ( jQuery.fx.off ) {
  		opt.duration = 0;
  
  	} else {
  		if ( typeof opt.duration !== "number" ) {
  			if ( opt.duration in jQuery.fx.speeds ) {
  				opt.duration = jQuery.fx.speeds[ opt.duration ];
  
  			} else {
  				opt.duration = jQuery.fx.speeds._default;
  			}
  		}
  	}
  
  	// Normalize opt.queue - true/undefined/null -> "fx"
  	if ( opt.queue == null || opt.queue === true ) {
  		opt.queue = "fx";
  	}
  
  	// Queueing
  	opt.old = opt.complete;
  
  	opt.complete = function() {
  		if ( jQuery.isFunction( opt.old ) ) {
  			opt.old.call( this );
  		}
  
  		if ( opt.queue ) {
  			jQuery.dequeue( this, opt.queue );
  		}
  	};
  
  	return opt;
  };
  
  jQuery.fn.extend( {
  	fadeTo: function( speed, to, easing, callback ) {
  
  		// Show any hidden elements after setting opacity to 0
  		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()
  
  			// Animate to the value specified
  			.end().animate( { opacity: to }, speed, easing, callback );
  	},
  	animate: function( prop, speed, easing, callback ) {
  		var empty = jQuery.isEmptyObject( prop ),
  			optall = jQuery.speed( speed, easing, callback ),
  			doAnimation = function() {
  
  				// Operate on a copy of prop so per-property easing won't be lost
  				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
  
  				// Empty animations, or finishing resolves immediately
  				if ( empty || dataPriv.get( this, "finish" ) ) {
  					anim.stop( true );
  				}
  			};
  			doAnimation.finish = doAnimation;
  
  		return empty || optall.queue === false ?
  			this.each( doAnimation ) :
  			this.queue( optall.queue, doAnimation );
  	},
  	stop: function( type, clearQueue, gotoEnd ) {
  		var stopQueue = function( hooks ) {
  			var stop = hooks.stop;
  			delete hooks.stop;
  			stop( gotoEnd );
  		};
  
  		if ( typeof type !== "string" ) {
  			gotoEnd = clearQueue;
  			clearQueue = type;
  			type = undefined;
  		}
  		if ( clearQueue && type !== false ) {
  			this.queue( type || "fx", [] );
  		}
  
  		return this.each( function() {
  			var dequeue = true,
  				index = type != null && type + "queueHooks",
  				timers = jQuery.timers,
  				data = dataPriv.get( this );
  
  			if ( index ) {
  				if ( data[ index ] && data[ index ].stop ) {
  					stopQueue( data[ index ] );
  				}
  			} else {
  				for ( index in data ) {
  					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
  						stopQueue( data[ index ] );
  					}
  				}
  			}
  
  			for ( index = timers.length; index--; ) {
  				if ( timers[ index ].elem === this &&
  					( type == null || timers[ index ].queue === type ) ) {
  
  					timers[ index ].anim.stop( gotoEnd );
  					dequeue = false;
  					timers.splice( index, 1 );
  				}
  			}
  
  			// Start the next in the queue if the last step wasn't forced.
  			// Timers currently will call their complete callbacks, which
  			// will dequeue but only if they were gotoEnd.
  			if ( dequeue || !gotoEnd ) {
  				jQuery.dequeue( this, type );
  			}
  		} );
  	},
  	finish: function( type ) {
  		if ( type !== false ) {
  			type = type || "fx";
  		}
  		return this.each( function() {
  			var index,
  				data = dataPriv.get( this ),
  				queue = data[ type + "queue" ],
  				hooks = data[ type + "queueHooks" ],
  				timers = jQuery.timers,
  				length = queue ? queue.length : 0;
  
  			// Enable finishing flag on private data
  			data.finish = true;
  
  			// Empty the queue first
  			jQuery.queue( this, type, [] );
  
  			if ( hooks && hooks.stop ) {
  				hooks.stop.call( this, true );
  			}
  
  			// Look for any active animations, and finish them
  			for ( index = timers.length; index--; ) {
  				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
  					timers[ index ].anim.stop( true );
  					timers.splice( index, 1 );
  				}
  			}
  
  			// Look for any animations in the old queue and finish them
  			for ( index = 0; index < length; index++ ) {
  				if ( queue[ index ] && queue[ index ].finish ) {
  					queue[ index ].finish.call( this );
  				}
  			}
  
  			// Turn off finishing flag
  			delete data.finish;
  		} );
  	}
  } );
  
  jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
  	var cssFn = jQuery.fn[ name ];
  	jQuery.fn[ name ] = function( speed, easing, callback ) {
  		return speed == null || typeof speed === "boolean" ?
  			cssFn.apply( this, arguments ) :
  			this.animate( genFx( name, true ), speed, easing, callback );
  	};
  } );
  
  // Generate shortcuts for custom animations
  jQuery.each( {
  	slideDown: genFx( "show" ),
  	slideUp: genFx( "hide" ),
  	slideToggle: genFx( "toggle" ),
  	fadeIn: { opacity: "show" },
  	fadeOut: { opacity: "hide" },
  	fadeToggle: { opacity: "toggle" }
  }, function( name, props ) {
  	jQuery.fn[ name ] = function( speed, easing, callback ) {
  		return this.animate( props, speed, easing, callback );
  	};
  } );
  
  jQuery.timers = [];
  jQuery.fx.tick = function() {
  	var timer,
  		i = 0,
  		timers = jQuery.timers;
  
  	fxNow = jQuery.now();
  
  	for ( ; i < timers.length; i++ ) {
  		timer = timers[ i ];
  
  		// Run the timer and safely remove it when done (allowing for external removal)
  		if ( !timer() && timers[ i ] === timer ) {
  			timers.splice( i--, 1 );
  		}
  	}
  
  	if ( !timers.length ) {
  		jQuery.fx.stop();
  	}
  	fxNow = undefined;
  };
  
  jQuery.fx.timer = function( timer ) {
  	jQuery.timers.push( timer );
  	jQuery.fx.start();
  };
  
  jQuery.fx.interval = 13;
  jQuery.fx.start = function() {
  	if ( inProgress ) {
  		return;
  	}
  
  	inProgress = true;
  	schedule();
  };
  
  jQuery.fx.stop = function() {
  	inProgress = null;
  };
  
  jQuery.fx.speeds = {
  	slow: 600,
  	fast: 200,
  
  	// Default speed
  	_default: 400
  };
  
  
  // Based off of the plugin by Clint Helfers, with permission.
  // https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
  jQuery.fn.delay = function( time, type ) {
  	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
  	type = type || "fx";
  
  	return this.queue( type, function( next, hooks ) {
  		var timeout = window.setTimeout( next, time );
  		hooks.stop = function() {
  			window.clearTimeout( timeout );
  		};
  	} );
  };
  
  
  ( function() {
  	var input = document.createElement( "input" ),
  		select = document.createElement( "select" ),
  		opt = select.appendChild( document.createElement( "option" ) );
  
  	input.type = "checkbox";
  
  	// Support: Android <=4.3 only
  	// Default value for a checkbox should be "on"
  	support.checkOn = input.value !== "";
  
  	// Support: IE <=11 only
  	// Must access selectedIndex to make default options select
  	support.optSelected = opt.selected;
  
  	// Support: IE <=11 only
  	// An input loses its value after becoming a radio
  	input = document.createElement( "input" );
  	input.value = "t";
  	input.type = "radio";
  	support.radioValue = input.value === "t";
  } )();
  
  
  var boolHook,
  	attrHandle = jQuery.expr.attrHandle;
  
  jQuery.fn.extend( {
  	attr: function( name, value ) {
  		return access( this, jQuery.attr, name, value, arguments.length > 1 );
  	},
  
  	removeAttr: function( name ) {
  		return this.each( function() {
  			jQuery.removeAttr( this, name );
  		} );
  	}
  } );
  
  jQuery.extend( {
  	attr: function( elem, name, value ) {
  		var ret, hooks,
  			nType = elem.nodeType;
  
  		// Don't get/set attributes on text, comment and attribute nodes
  		if ( nType === 3 || nType === 8 || nType === 2 ) {
  			return;
  		}
  
  		// Fallback to prop when attributes are not supported
  		if ( typeof elem.getAttribute === "undefined" ) {
  			return jQuery.prop( elem, name, value );
  		}
  
  		// Attribute hooks are determined by the lowercase version
  		// Grab necessary hook if one is defined
  		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
  			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
  				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
  		}
  
  		if ( value !== undefined ) {
  			if ( value === null ) {
  				jQuery.removeAttr( elem, name );
  				return;
  			}
  
  			if ( hooks && "set" in hooks &&
  				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
  				return ret;
  			}
  
  			elem.setAttribute( name, value + "" );
  			return value;
  		}
  
  		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
  			return ret;
  		}
  
  		ret = jQuery.find.attr( elem, name );
  
  		// Non-existent attributes return null, we normalize to undefined
  		return ret == null ? undefined : ret;
  	},
  
  	attrHooks: {
  		type: {
  			set: function( elem, value ) {
  				if ( !support.radioValue && value === "radio" &&
  					nodeName( elem, "input" ) ) {
  					var val = elem.value;
  					elem.setAttribute( "type", value );
  					if ( val ) {
  						elem.value = val;
  					}
  					return value;
  				}
  			}
  		}
  	},
  
  	removeAttr: function( elem, value ) {
  		var name,
  			i = 0,
  
  			// Attribute names can contain non-HTML whitespace characters
  			// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
  			attrNames = value && value.match( rnothtmlwhite );
  
  		if ( attrNames && elem.nodeType === 1 ) {
  			while ( ( name = attrNames[ i++ ] ) ) {
  				elem.removeAttribute( name );
  			}
  		}
  	}
  } );
  
  // Hooks for boolean attributes
  boolHook = {
  	set: function( elem, value, name ) {
  		if ( value === false ) {
  
  			// Remove boolean attributes when set to false
  			jQuery.removeAttr( elem, name );
  		} else {
  			elem.setAttribute( name, name );
  		}
  		return name;
  	}
  };
  
  jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
  	var getter = attrHandle[ name ] || jQuery.find.attr;
  
  	attrHandle[ name ] = function( elem, name, isXML ) {
  		var ret, handle,
  			lowercaseName = name.toLowerCase();
  
  		if ( !isXML ) {
  
  			// Avoid an infinite loop by temporarily removing this function from the getter
  			handle = attrHandle[ lowercaseName ];
  			attrHandle[ lowercaseName ] = ret;
  			ret = getter( elem, name, isXML ) != null ?
  				lowercaseName :
  				null;
  			attrHandle[ lowercaseName ] = handle;
  		}
  		return ret;
  	};
  } );
  
  
  
  
  var rfocusable = /^(?:input|select|textarea|button)$/i,
  	rclickable = /^(?:a|area)$/i;
  
  jQuery.fn.extend( {
  	prop: function( name, value ) {
  		return access( this, jQuery.prop, name, value, arguments.length > 1 );
  	},
  
  	removeProp: function( name ) {
  		return this.each( function() {
  			delete this[ jQuery.propFix[ name ] || name ];
  		} );
  	}
  } );
  
  jQuery.extend( {
  	prop: function( elem, name, value ) {
  		var ret, hooks,
  			nType = elem.nodeType;
  
  		// Don't get/set properties on text, comment and attribute nodes
  		if ( nType === 3 || nType === 8 || nType === 2 ) {
  			return;
  		}
  
  		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
  
  			// Fix name and attach hooks
  			name = jQuery.propFix[ name ] || name;
  			hooks = jQuery.propHooks[ name ];
  		}
  
  		if ( value !== undefined ) {
  			if ( hooks && "set" in hooks &&
  				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
  				return ret;
  			}
  
  			return ( elem[ name ] = value );
  		}
  
  		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
  			return ret;
  		}
  
  		return elem[ name ];
  	},
  
  	propHooks: {
  		tabIndex: {
  			get: function( elem ) {
  
  				// Support: IE <=9 - 11 only
  				// elem.tabIndex doesn't always return the
  				// correct value when it hasn't been explicitly set
  				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
  				// Use proper attribute retrieval(#12072)
  				var tabindex = jQuery.find.attr( elem, "tabindex" );
  
  				if ( tabindex ) {
  					return parseInt( tabindex, 10 );
  				}
  
  				if (
  					rfocusable.test( elem.nodeName ) ||
  					rclickable.test( elem.nodeName ) &&
  					elem.href
  				) {
  					return 0;
  				}
  
  				return -1;
  			}
  		}
  	},
  
  	propFix: {
  		"for": "htmlFor",
  		"class": "className"
  	}
  } );
  
  // Support: IE <=11 only
  // Accessing the selectedIndex property
  // forces the browser to respect setting selected
  // on the option
  // The getter ensures a default option is selected
  // when in an optgroup
  // eslint rule "no-unused-expressions" is disabled for this code
  // since it considers such accessions noop
  if ( !support.optSelected ) {
  	jQuery.propHooks.selected = {
  		get: function( elem ) {
  
  			/* eslint no-unused-expressions: "off" */
  
  			var parent = elem.parentNode;
  			if ( parent && parent.parentNode ) {
  				parent.parentNode.selectedIndex;
  			}
  			return null;
  		},
  		set: function( elem ) {
  
  			/* eslint no-unused-expressions: "off" */
  
  			var parent = elem.parentNode;
  			if ( parent ) {
  				parent.selectedIndex;
  
  				if ( parent.parentNode ) {
  					parent.parentNode.selectedIndex;
  				}
  			}
  		}
  	};
  }
  
  jQuery.each( [
  	"tabIndex",
  	"readOnly",
  	"maxLength",
  	"cellSpacing",
  	"cellPadding",
  	"rowSpan",
  	"colSpan",
  	"useMap",
  	"frameBorder",
  	"contentEditable"
  ], function() {
  	jQuery.propFix[ this.toLowerCase() ] = this;
  } );
  
  
  
  
  	// Strip and collapse whitespace according to HTML spec
  	// https://html.spec.whatwg.org/multipage/infrastructure.html#strip-and-collapse-whitespace
  	function stripAndCollapse( value ) {
  		var tokens = value.match( rnothtmlwhite ) || [];
  		return tokens.join( " " );
  	}
  
  
  function getClass( elem ) {
  	return elem.getAttribute && elem.getAttribute( "class" ) || "";
  }
  
  jQuery.fn.extend( {
  	addClass: function( value ) {
  		var classes, elem, cur, curValue, clazz, j, finalValue,
  			i = 0;
  
  		if ( jQuery.isFunction( value ) ) {
  			return this.each( function( j ) {
  				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
  			} );
  		}
  
  		if ( typeof value === "string" && value ) {
  			classes = value.match( rnothtmlwhite ) || [];
  
  			while ( ( elem = this[ i++ ] ) ) {
  				curValue = getClass( elem );
  				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
  
  				if ( cur ) {
  					j = 0;
  					while ( ( clazz = classes[ j++ ] ) ) {
  						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
  							cur += clazz + " ";
  						}
  					}
  
  					// Only assign if different to avoid unneeded rendering.
  					finalValue = stripAndCollapse( cur );
  					if ( curValue !== finalValue ) {
  						elem.setAttribute( "class", finalValue );
  					}
  				}
  			}
  		}
  
  		return this;
  	},
  
  	removeClass: function( value ) {
  		var classes, elem, cur, curValue, clazz, j, finalValue,
  			i = 0;
  
  		if ( jQuery.isFunction( value ) ) {
  			return this.each( function( j ) {
  				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
  			} );
  		}
  
  		if ( !arguments.length ) {
  			return this.attr( "class", "" );
  		}
  
  		if ( typeof value === "string" && value ) {
  			classes = value.match( rnothtmlwhite ) || [];
  
  			while ( ( elem = this[ i++ ] ) ) {
  				curValue = getClass( elem );
  
  				// This expression is here for better compressibility (see addClass)
  				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
  
  				if ( cur ) {
  					j = 0;
  					while ( ( clazz = classes[ j++ ] ) ) {
  
  						// Remove *all* instances
  						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
  							cur = cur.replace( " " + clazz + " ", " " );
  						}
  					}
  
  					// Only assign if different to avoid unneeded rendering.
  					finalValue = stripAndCollapse( cur );
  					if ( curValue !== finalValue ) {
  						elem.setAttribute( "class", finalValue );
  					}
  				}
  			}
  		}
  
  		return this;
  	},
  
  	toggleClass: function( value, stateVal ) {
  		var type = typeof value;
  
  		if ( typeof stateVal === "boolean" && type === "string" ) {
  			return stateVal ? this.addClass( value ) : this.removeClass( value );
  		}
  
  		if ( jQuery.isFunction( value ) ) {
  			return this.each( function( i ) {
  				jQuery( this ).toggleClass(
  					value.call( this, i, getClass( this ), stateVal ),
  					stateVal
  				);
  			} );
  		}
  
  		return this.each( function() {
  			var className, i, self, classNames;
  
  			if ( type === "string" ) {
  
  				// Toggle individual class names
  				i = 0;
  				self = jQuery( this );
  				classNames = value.match( rnothtmlwhite ) || [];
  
  				while ( ( className = classNames[ i++ ] ) ) {
  
  					// Check each className given, space separated list
  					if ( self.hasClass( className ) ) {
  						self.removeClass( className );
  					} else {
  						self.addClass( className );
  					}
  				}
  
  			// Toggle whole class name
  			} else if ( value === undefined || type === "boolean" ) {
  				className = getClass( this );
  				if ( className ) {
  
  					// Store className if set
  					dataPriv.set( this, "__className__", className );
  				}
  
  				// If the element has a class name or if we're passed `false`,
  				// then remove the whole classname (if there was one, the above saved it).
  				// Otherwise bring back whatever was previously saved (if anything),
  				// falling back to the empty string if nothing was stored.
  				if ( this.setAttribute ) {
  					this.setAttribute( "class",
  						className || value === false ?
  						"" :
  						dataPriv.get( this, "__className__" ) || ""
  					);
  				}
  			}
  		} );
  	},
  
  	hasClass: function( selector ) {
  		var className, elem,
  			i = 0;
  
  		className = " " + selector + " ";
  		while ( ( elem = this[ i++ ] ) ) {
  			if ( elem.nodeType === 1 &&
  				( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
  					return true;
  			}
  		}
  
  		return false;
  	}
  } );
  
  
  
  
  var rreturn = /\r/g;
  
  jQuery.fn.extend( {
  	val: function( value ) {
  		var hooks, ret, isFunction,
  			elem = this[ 0 ];
  
  		if ( !arguments.length ) {
  			if ( elem ) {
  				hooks = jQuery.valHooks[ elem.type ] ||
  					jQuery.valHooks[ elem.nodeName.toLowerCase() ];
  
  				if ( hooks &&
  					"get" in hooks &&
  					( ret = hooks.get( elem, "value" ) ) !== undefined
  				) {
  					return ret;
  				}
  
  				ret = elem.value;
  
  				// Handle most common string cases
  				if ( typeof ret === "string" ) {
  					return ret.replace( rreturn, "" );
  				}
  
  				// Handle cases where value is null/undef or number
  				return ret == null ? "" : ret;
  			}
  
  			return;
  		}
  
  		isFunction = jQuery.isFunction( value );
  
  		return this.each( function( i ) {
  			var val;
  
  			if ( this.nodeType !== 1 ) {
  				return;
  			}
  
  			if ( isFunction ) {
  				val = value.call( this, i, jQuery( this ).val() );
  			} else {
  				val = value;
  			}
  
  			// Treat null/undefined as ""; convert numbers to string
  			if ( val == null ) {
  				val = "";
  
  			} else if ( typeof val === "number" ) {
  				val += "";
  
  			} else if ( Array.isArray( val ) ) {
  				val = jQuery.map( val, function( value ) {
  					return value == null ? "" : value + "";
  				} );
  			}
  
  			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
  
  			// If set returns undefined, fall back to normal setting
  			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
  				this.value = val;
  			}
  		} );
  	}
  } );
  
  jQuery.extend( {
  	valHooks: {
  		option: {
  			get: function( elem ) {
  
  				var val = jQuery.find.attr( elem, "value" );
  				return val != null ?
  					val :
  
  					// Support: IE <=10 - 11 only
  					// option.text throws exceptions (#14686, #14858)
  					// Strip and collapse whitespace
  					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
  					stripAndCollapse( jQuery.text( elem ) );
  			}
  		},
  		select: {
  			get: function( elem ) {
  				var value, option, i,
  					options = elem.options,
  					index = elem.selectedIndex,
  					one = elem.type === "select-one",
  					values = one ? null : [],
  					max = one ? index + 1 : options.length;
  
  				if ( index < 0 ) {
  					i = max;
  
  				} else {
  					i = one ? index : 0;
  				}
  
  				// Loop through all the selected options
  				for ( ; i < max; i++ ) {
  					option = options[ i ];
  
  					// Support: IE <=9 only
  					// IE8-9 doesn't update selected after form reset (#2551)
  					if ( ( option.selected || i === index ) &&
  
  							// Don't return options that are disabled or in a disabled optgroup
  							!option.disabled &&
  							( !option.parentNode.disabled ||
  								!nodeName( option.parentNode, "optgroup" ) ) ) {
  
  						// Get the specific value for the option
  						value = jQuery( option ).val();
  
  						// We don't need an array for one selects
  						if ( one ) {
  							return value;
  						}
  
  						// Multi-Selects return an array
  						values.push( value );
  					}
  				}
  
  				return values;
  			},
  
  			set: function( elem, value ) {
  				var optionSet, option,
  					options = elem.options,
  					values = jQuery.makeArray( value ),
  					i = options.length;
  
  				while ( i-- ) {
  					option = options[ i ];
  
  					/* eslint-disable no-cond-assign */
  
  					if ( option.selected =
  						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
  					) {
  						optionSet = true;
  					}
  
  					/* eslint-enable no-cond-assign */
  				}
  
  				// Force browsers to behave consistently when non-matching value is set
  				if ( !optionSet ) {
  					elem.selectedIndex = -1;
  				}
  				return values;
  			}
  		}
  	}
  } );
  
  // Radios and checkboxes getter/setter
  jQuery.each( [ "radio", "checkbox" ], function() {
  	jQuery.valHooks[ this ] = {
  		set: function( elem, value ) {
  			if ( Array.isArray( value ) ) {
  				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
  			}
  		}
  	};
  	if ( !support.checkOn ) {
  		jQuery.valHooks[ this ].get = function( elem ) {
  			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
  		};
  	}
  } );
  
  
  
  
  // Return jQuery for attributes-only inclusion
  
  
  var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
  
  jQuery.extend( jQuery.event, {
  
  	trigger: function( event, data, elem, onlyHandlers ) {
  
  		var i, cur, tmp, bubbleType, ontype, handle, special,
  			eventPath = [ elem || document ],
  			type = hasOwn.call( event, "type" ) ? event.type : event,
  			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
  
  		cur = tmp = elem = elem || document;
  
  		// Don't do events on text and comment nodes
  		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
  			return;
  		}
  
  		// focus/blur morphs to focusin/out; ensure we're not firing them right now
  		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
  			return;
  		}
  
  		if ( type.indexOf( "." ) > -1 ) {
  
  			// Namespaced trigger; create a regexp to match event type in handle()
  			namespaces = type.split( "." );
  			type = namespaces.shift();
  			namespaces.sort();
  		}
  		ontype = type.indexOf( ":" ) < 0 && "on" + type;
  
  		// Caller can pass in a jQuery.Event object, Object, or just an event type string
  		event = event[ jQuery.expando ] ?
  			event :
  			new jQuery.Event( type, typeof event === "object" && event );
  
  		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
  		event.isTrigger = onlyHandlers ? 2 : 3;
  		event.namespace = namespaces.join( "." );
  		event.rnamespace = event.namespace ?
  			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
  			null;
  
  		// Clean up the event in case it is being reused
  		event.result = undefined;
  		if ( !event.target ) {
  			event.target = elem;
  		}
  
  		// Clone any incoming data and prepend the event, creating the handler arg list
  		data = data == null ?
  			[ event ] :
  			jQuery.makeArray( data, [ event ] );
  
  		// Allow special events to draw outside the lines
  		special = jQuery.event.special[ type ] || {};
  		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
  			return;
  		}
  
  		// Determine event propagation path in advance, per W3C events spec (#9951)
  		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
  		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
  
  			bubbleType = special.delegateType || type;
  			if ( !rfocusMorph.test( bubbleType + type ) ) {
  				cur = cur.parentNode;
  			}
  			for ( ; cur; cur = cur.parentNode ) {
  				eventPath.push( cur );
  				tmp = cur;
  			}
  
  			// Only add window if we got to document (e.g., not plain obj or detached DOM)
  			if ( tmp === ( elem.ownerDocument || document ) ) {
  				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
  			}
  		}
  
  		// Fire handlers on the event path
  		i = 0;
  		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
  
  			event.type = i > 1 ?
  				bubbleType :
  				special.bindType || type;
  
  			// jQuery handler
  			handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
  				dataPriv.get( cur, "handle" );
  			if ( handle ) {
  				handle.apply( cur, data );
  			}
  
  			// Native handler
  			handle = ontype && cur[ ontype ];
  			if ( handle && handle.apply && acceptData( cur ) ) {
  				event.result = handle.apply( cur, data );
  				if ( event.result === false ) {
  					event.preventDefault();
  				}
  			}
  		}
  		event.type = type;
  
  		// If nobody prevented the default action, do it now
  		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
  
  			if ( ( !special._default ||
  				special._default.apply( eventPath.pop(), data ) === false ) &&
  				acceptData( elem ) ) {
  
  				// Call a native DOM method on the target with the same name as the event.
  				// Don't do default actions on window, that's where global variables be (#6170)
  				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
  
  					// Don't re-trigger an onFOO event when we call its FOO() method
  					tmp = elem[ ontype ];
  
  					if ( tmp ) {
  						elem[ ontype ] = null;
  					}
  
  					// Prevent re-triggering of the same event, since we already bubbled it above
  					jQuery.event.triggered = type;
  					elem[ type ]();
  					jQuery.event.triggered = undefined;
  
  					if ( tmp ) {
  						elem[ ontype ] = tmp;
  					}
  				}
  			}
  		}
  
  		return event.result;
  	},
  
  	// Piggyback on a donor event to simulate a different one
  	// Used only for `focus(in | out)` events
  	simulate: function( type, elem, event ) {
  		var e = jQuery.extend(
  			new jQuery.Event(),
  			event,
  			{
  				type: type,
  				isSimulated: true
  			}
  		);
  
  		jQuery.event.trigger( e, null, elem );
  	}
  
  } );
  
  jQuery.fn.extend( {
  
  	trigger: function( type, data ) {
  		return this.each( function() {
  			jQuery.event.trigger( type, data, this );
  		} );
  	},
  	triggerHandler: function( type, data ) {
  		var elem = this[ 0 ];
  		if ( elem ) {
  			return jQuery.event.trigger( type, data, elem, true );
  		}
  	}
  } );
  
  
  jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
  	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
  	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
  	function( i, name ) {
  
  	// Handle event binding
  	jQuery.fn[ name ] = function( data, fn ) {
  		return arguments.length > 0 ?
  			this.on( name, null, data, fn ) :
  			this.trigger( name );
  	};
  } );
  
  jQuery.fn.extend( {
  	hover: function( fnOver, fnOut ) {
  		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
  	}
  } );
  
  
  
  
  support.focusin = "onfocusin" in window;
  
  
  // Support: Firefox <=44
  // Firefox doesn't have focus(in | out) events
  // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
  //
  // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
  // focus(in | out) events fire after focus & blur events,
  // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
  // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
  if ( !support.focusin ) {
  	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
  
  		// Attach a single capturing handler on the document while someone wants focusin/focusout
  		var handler = function( event ) {
  			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
  		};
  
  		jQuery.event.special[ fix ] = {
  			setup: function() {
  				var doc = this.ownerDocument || this,
  					attaches = dataPriv.access( doc, fix );
  
  				if ( !attaches ) {
  					doc.addEventListener( orig, handler, true );
  				}
  				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
  			},
  			teardown: function() {
  				var doc = this.ownerDocument || this,
  					attaches = dataPriv.access( doc, fix ) - 1;
  
  				if ( !attaches ) {
  					doc.removeEventListener( orig, handler, true );
  					dataPriv.remove( doc, fix );
  
  				} else {
  					dataPriv.access( doc, fix, attaches );
  				}
  			}
  		};
  	} );
  }
  var location = window.location;
  
  var nonce = jQuery.now();
  
  var rquery = ( /\?/ );
  
  
  
  // Cross-browser xml parsing
  jQuery.parseXML = function( data ) {
  	var xml;
  	if ( !data || typeof data !== "string" ) {
  		return null;
  	}
  
  	// Support: IE 9 - 11 only
  	// IE throws on parseFromString with invalid input.
  	try {
  		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
  	} catch ( e ) {
  		xml = undefined;
  	}
  
  	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
  		jQuery.error( "Invalid XML: " + data );
  	}
  	return xml;
  };
  
  
  var
  	rbracket = /\[\]$/,
  	rCRLF = /\r?\n/g,
  	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
  	rsubmittable = /^(?:input|select|textarea|keygen)/i;
  
  function buildParams( prefix, obj, traditional, add ) {
  	var name;
  
  	if ( Array.isArray( obj ) ) {
  
  		// Serialize array item.
  		jQuery.each( obj, function( i, v ) {
  			if ( traditional || rbracket.test( prefix ) ) {
  
  				// Treat each array item as a scalar.
  				add( prefix, v );
  
  			} else {
  
  				// Item is non-scalar (array or object), encode its numeric index.
  				buildParams(
  					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
  					v,
  					traditional,
  					add
  				);
  			}
  		} );
  
  	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
  
  		// Serialize object item.
  		for ( name in obj ) {
  			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
  		}
  
  	} else {
  
  		// Serialize scalar item.
  		add( prefix, obj );
  	}
  }
  
  // Serialize an array of form elements or a set of
  // key/values into a query string
  jQuery.param = function( a, traditional ) {
  	var prefix,
  		s = [],
  		add = function( key, valueOrFunction ) {
  
  			// If value is a function, invoke it and use its return value
  			var value = jQuery.isFunction( valueOrFunction ) ?
  				valueOrFunction() :
  				valueOrFunction;
  
  			s[ s.length ] = encodeURIComponent( key ) + "=" +
  				encodeURIComponent( value == null ? "" : value );
  		};
  
  	// If an array was passed in, assume that it is an array of form elements.
  	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
  
  		// Serialize the form elements
  		jQuery.each( a, function() {
  			add( this.name, this.value );
  		} );
  
  	} else {
  
  		// If traditional, encode the "old" way (the way 1.3.2 or older
  		// did it), otherwise encode params recursively.
  		for ( prefix in a ) {
  			buildParams( prefix, a[ prefix ], traditional, add );
  		}
  	}
  
  	// Return the resulting serialization
  	return s.join( "&" );
  };
  
  jQuery.fn.extend( {
  	serialize: function() {
  		return jQuery.param( this.serializeArray() );
  	},
  	serializeArray: function() {
  		return this.map( function() {
  
  			// Can add propHook for "elements" to filter or add form elements
  			var elements = jQuery.prop( this, "elements" );
  			return elements ? jQuery.makeArray( elements ) : this;
  		} )
  		.filter( function() {
  			var type = this.type;
  
  			// Use .is( ":disabled" ) so that fieldset[disabled] works
  			return this.name && !jQuery( this ).is( ":disabled" ) &&
  				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
  				( this.checked || !rcheckableType.test( type ) );
  		} )
  		.map( function( i, elem ) {
  			var val = jQuery( this ).val();
  
  			if ( val == null ) {
  				return null;
  			}
  
  			if ( Array.isArray( val ) ) {
  				return jQuery.map( val, function( val ) {
  					return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
  				} );
  			}
  
  			return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
  		} ).get();
  	}
  } );
  
  
  var
  	r20 = /%20/g,
  	rhash = /#.*$/,
  	rantiCache = /([?&])_=[^&]*/,
  	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
  
  	// #7653, #8125, #8152: local protocol detection
  	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
  	rnoContent = /^(?:GET|HEAD)$/,
  	rprotocol = /^\/\//,
  
  	/* Prefilters
  	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
  	 * 2) These are called:
  	 *    - BEFORE asking for a transport
  	 *    - AFTER param serialization (s.data is a string if s.processData is true)
  	 * 3) key is the dataType
  	 * 4) the catchall symbol "*" can be used
  	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
  	 */
  	prefilters = {},
  
  	/* Transports bindings
  	 * 1) key is the dataType
  	 * 2) the catchall symbol "*" can be used
  	 * 3) selection will start with transport dataType and THEN go to "*" if needed
  	 */
  	transports = {},
  
  	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
  	allTypes = "*/".concat( "*" ),
  
  	// Anchor tag for parsing the document origin
  	originAnchor = document.createElement( "a" );
  	originAnchor.href = location.href;
  
  // Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
  function addToPrefiltersOrTransports( structure ) {
  
  	// dataTypeExpression is optional and defaults to "*"
  	return function( dataTypeExpression, func ) {
  
  		if ( typeof dataTypeExpression !== "string" ) {
  			func = dataTypeExpression;
  			dataTypeExpression = "*";
  		}
  
  		var dataType,
  			i = 0,
  			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];
  
  		if ( jQuery.isFunction( func ) ) {
  
  			// For each dataType in the dataTypeExpression
  			while ( ( dataType = dataTypes[ i++ ] ) ) {
  
  				// Prepend if requested
  				if ( dataType[ 0 ] === "+" ) {
  					dataType = dataType.slice( 1 ) || "*";
  					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );
  
  				// Otherwise append
  				} else {
  					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
  				}
  			}
  		}
  	};
  }
  
  // Base inspection function for prefilters and transports
  function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {
  
  	var inspected = {},
  		seekingTransport = ( structure === transports );
  
  	function inspect( dataType ) {
  		var selected;
  		inspected[ dataType ] = true;
  		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
  			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
  			if ( typeof dataTypeOrTransport === "string" &&
  				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {
  
  				options.dataTypes.unshift( dataTypeOrTransport );
  				inspect( dataTypeOrTransport );
  				return false;
  			} else if ( seekingTransport ) {
  				return !( selected = dataTypeOrTransport );
  			}
  		} );
  		return selected;
  	}
  
  	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
  }
  
  // A special extend for ajax options
  // that takes "flat" options (not to be deep extended)
  // Fixes #9887
  function ajaxExtend( target, src ) {
  	var key, deep,
  		flatOptions = jQuery.ajaxSettings.flatOptions || {};
  
  	for ( key in src ) {
  		if ( src[ key ] !== undefined ) {
  			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
  		}
  	}
  	if ( deep ) {
  		jQuery.extend( true, target, deep );
  	}
  
  	return target;
  }
  
  /* Handles responses to an ajax request:
   * - finds the right dataType (mediates between content-type and expected dataType)
   * - returns the corresponding response
   */
  function ajaxHandleResponses( s, jqXHR, responses ) {
  
  	var ct, type, finalDataType, firstDataType,
  		contents = s.contents,
  		dataTypes = s.dataTypes;
  
  	// Remove auto dataType and get content-type in the process
  	while ( dataTypes[ 0 ] === "*" ) {
  		dataTypes.shift();
  		if ( ct === undefined ) {
  			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
  		}
  	}
  
  	// Check if we're dealing with a known content-type
  	if ( ct ) {
  		for ( type in contents ) {
  			if ( contents[ type ] && contents[ type ].test( ct ) ) {
  				dataTypes.unshift( type );
  				break;
  			}
  		}
  	}
  
  	// Check to see if we have a response for the expected dataType
  	if ( dataTypes[ 0 ] in responses ) {
  		finalDataType = dataTypes[ 0 ];
  	} else {
  
  		// Try convertible dataTypes
  		for ( type in responses ) {
  			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
  				finalDataType = type;
  				break;
  			}
  			if ( !firstDataType ) {
  				firstDataType = type;
  			}
  		}
  
  		// Or just use first one
  		finalDataType = finalDataType || firstDataType;
  	}
  
  	// If we found a dataType
  	// We add the dataType to the list if needed
  	// and return the corresponding response
  	if ( finalDataType ) {
  		if ( finalDataType !== dataTypes[ 0 ] ) {
  			dataTypes.unshift( finalDataType );
  		}
  		return responses[ finalDataType ];
  	}
  }
  
  /* Chain conversions given the request and the original response
   * Also sets the responseXXX fields on the jqXHR instance
   */
  function ajaxConvert( s, response, jqXHR, isSuccess ) {
  	var conv2, current, conv, tmp, prev,
  		converters = {},
  
  		// Work with a copy of dataTypes in case we need to modify it for conversion
  		dataTypes = s.dataTypes.slice();
  
  	// Create converters map with lowercased keys
  	if ( dataTypes[ 1 ] ) {
  		for ( conv in s.converters ) {
  			converters[ conv.toLowerCase() ] = s.converters[ conv ];
  		}
  	}
  
  	current = dataTypes.shift();
  
  	// Convert to each sequential dataType
  	while ( current ) {
  
  		if ( s.responseFields[ current ] ) {
  			jqXHR[ s.responseFields[ current ] ] = response;
  		}
  
  		// Apply the dataFilter if provided
  		if ( !prev && isSuccess && s.dataFilter ) {
  			response = s.dataFilter( response, s.dataType );
  		}
  
  		prev = current;
  		current = dataTypes.shift();
  
  		if ( current ) {
  
  			// There's only work to do if current dataType is non-auto
  			if ( current === "*" ) {
  
  				current = prev;
  
  			// Convert response if prev dataType is non-auto and differs from current
  			} else if ( prev !== "*" && prev !== current ) {
  
  				// Seek a direct converter
  				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
  
  				// If none found, seek a pair
  				if ( !conv ) {
  					for ( conv2 in converters ) {
  
  						// If conv2 outputs current
  						tmp = conv2.split( " " );
  						if ( tmp[ 1 ] === current ) {
  
  							// If prev can be converted to accepted input
  							conv = converters[ prev + " " + tmp[ 0 ] ] ||
  								converters[ "* " + tmp[ 0 ] ];
  							if ( conv ) {
  
  								// Condense equivalence converters
  								if ( conv === true ) {
  									conv = converters[ conv2 ];
  
  								// Otherwise, insert the intermediate dataType
  								} else if ( converters[ conv2 ] !== true ) {
  									current = tmp[ 0 ];
  									dataTypes.unshift( tmp[ 1 ] );
  								}
  								break;
  							}
  						}
  					}
  				}
  
  				// Apply converter (if not an equivalence)
  				if ( conv !== true ) {
  
  					// Unless errors are allowed to bubble, catch and return them
  					if ( conv && s.throws ) {
  						response = conv( response );
  					} else {
  						try {
  							response = conv( response );
  						} catch ( e ) {
  							return {
  								state: "parsererror",
  								error: conv ? e : "No conversion from " + prev + " to " + current
  							};
  						}
  					}
  				}
  			}
  		}
  	}
  
  	return { state: "success", data: response };
  }
  
  jQuery.extend( {
  
  	// Counter for holding the number of active queries
  	active: 0,
  
  	// Last-Modified header cache for next request
  	lastModified: {},
  	etag: {},
  
  	ajaxSettings: {
  		url: location.href,
  		type: "GET",
  		isLocal: rlocalProtocol.test( location.protocol ),
  		global: true,
  		processData: true,
  		async: true,
  		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
  
  		/*
  		timeout: 0,
  		data: null,
  		dataType: null,
  		username: null,
  		password: null,
  		cache: null,
  		throws: false,
  		traditional: false,
  		headers: {},
  		*/
  
  		accepts: {
  			"*": allTypes,
  			text: "text/plain",
  			html: "text/html",
  			xml: "application/xml, text/xml",
  			json: "application/json, text/javascript"
  		},
  
  		contents: {
  			xml: /\bxml\b/,
  			html: /\bhtml/,
  			json: /\bjson\b/
  		},
  
  		responseFields: {
  			xml: "responseXML",
  			text: "responseText",
  			json: "responseJSON"
  		},
  
  		// Data converters
  		// Keys separate source (or catchall "*") and destination types with a single space
  		converters: {
  
  			// Convert anything to text
  			"* text": String,
  
  			// Text to html (true = no transformation)
  			"text html": true,
  
  			// Evaluate text as a json expression
  			"text json": JSON.parse,
  
  			// Parse text as xml
  			"text xml": jQuery.parseXML
  		},
  
  		// For options that shouldn't be deep extended:
  		// you can add your own custom options here if
  		// and when you create one that shouldn't be
  		// deep extended (see ajaxExtend)
  		flatOptions: {
  			url: true,
  			context: true
  		}
  	},
  
  	// Creates a full fledged settings object into target
  	// with both ajaxSettings and settings fields.
  	// If target is omitted, writes into ajaxSettings.
  	ajaxSetup: function( target, settings ) {
  		return settings ?
  
  			// Building a settings object
  			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :
  
  			// Extending ajaxSettings
  			ajaxExtend( jQuery.ajaxSettings, target );
  	},
  
  	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
  	ajaxTransport: addToPrefiltersOrTransports( transports ),
  
  	// Main method
  	ajax: function( url, options ) {
  
  		// If url is an object, simulate pre-1.5 signature
  		if ( typeof url === "object" ) {
  			options = url;
  			url = undefined;
  		}
  
  		// Force options to be an object
  		options = options || {};
  
  		var transport,
  
  			// URL without anti-cache param
  			cacheURL,
  
  			// Response headers
  			responseHeadersString,
  			responseHeaders,
  
  			// timeout handle
  			timeoutTimer,
  
  			// Url cleanup var
  			urlAnchor,
  
  			// Request state (becomes false upon send and true upon completion)
  			completed,
  
  			// To know if global events are to be dispatched
  			fireGlobals,
  
  			// Loop variable
  			i,
  
  			// uncached part of the url
  			uncached,
  
  			// Create the final options object
  			s = jQuery.ajaxSetup( {}, options ),
  
  			// Callbacks context
  			callbackContext = s.context || s,
  
  			// Context for global events is callbackContext if it is a DOM node or jQuery collection
  			globalEventContext = s.context &&
  				( callbackContext.nodeType || callbackContext.jquery ) ?
  					jQuery( callbackContext ) :
  					jQuery.event,
  
  			// Deferreds
  			deferred = jQuery.Deferred(),
  			completeDeferred = jQuery.Callbacks( "once memory" ),
  
  			// Status-dependent callbacks
  			statusCode = s.statusCode || {},
  
  			// Headers (they are sent all at once)
  			requestHeaders = {},
  			requestHeadersNames = {},
  
  			// Default abort message
  			strAbort = "canceled",
  
  			// Fake xhr
  			jqXHR = {
  				readyState: 0,
  
  				// Builds headers hashtable if needed
  				getResponseHeader: function( key ) {
  					var match;
  					if ( completed ) {
  						if ( !responseHeaders ) {
  							responseHeaders = {};
  							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
  								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
  							}
  						}
  						match = responseHeaders[ key.toLowerCase() ];
  					}
  					return match == null ? null : match;
  				},
  
  				// Raw string
  				getAllResponseHeaders: function() {
  					return completed ? responseHeadersString : null;
  				},
  
  				// Caches the header
  				setRequestHeader: function( name, value ) {
  					if ( completed == null ) {
  						name = requestHeadersNames[ name.toLowerCase() ] =
  							requestHeadersNames[ name.toLowerCase() ] || name;
  						requestHeaders[ name ] = value;
  					}
  					return this;
  				},
  
  				// Overrides response content-type header
  				overrideMimeType: function( type ) {
  					if ( completed == null ) {
  						s.mimeType = type;
  					}
  					return this;
  				},
  
  				// Status-dependent callbacks
  				statusCode: function( map ) {
  					var code;
  					if ( map ) {
  						if ( completed ) {
  
  							// Execute the appropriate callbacks
  							jqXHR.always( map[ jqXHR.status ] );
  						} else {
  
  							// Lazy-add the new callbacks in a way that preserves old ones
  							for ( code in map ) {
  								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
  							}
  						}
  					}
  					return this;
  				},
  
  				// Cancel the request
  				abort: function( statusText ) {
  					var finalText = statusText || strAbort;
  					if ( transport ) {
  						transport.abort( finalText );
  					}
  					done( 0, finalText );
  					return this;
  				}
  			};
  
  		// Attach deferreds
  		deferred.promise( jqXHR );
  
  		// Add protocol if not provided (prefilters might expect it)
  		// Handle falsy url in the settings object (#10093: consistency with old signature)
  		// We also use the url parameter if available
  		s.url = ( ( url || s.url || location.href ) + "" )
  			.replace( rprotocol, location.protocol + "//" );
  
  		// Alias method option to type as per ticket #12004
  		s.type = options.method || options.type || s.method || s.type;
  
  		// Extract dataTypes list
  		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];
  
  		// A cross-domain request is in order when the origin doesn't match the current origin.
  		if ( s.crossDomain == null ) {
  			urlAnchor = document.createElement( "a" );
  
  			// Support: IE <=8 - 11, Edge 12 - 13
  			// IE throws exception on accessing the href property if url is malformed,
  			// e.g. http://example.com:80x/
  			try {
  				urlAnchor.href = s.url;
  
  				// Support: IE <=8 - 11 only
  				// Anchor's host property isn't correctly set when s.url is relative
  				urlAnchor.href = urlAnchor.href;
  				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
  					urlAnchor.protocol + "//" + urlAnchor.host;
  			} catch ( e ) {
  
  				// If there is an error parsing the URL, assume it is crossDomain,
  				// it can be rejected by the transport if it is invalid
  				s.crossDomain = true;
  			}
  		}
  
  		// Convert data if not already a string
  		if ( s.data && s.processData && typeof s.data !== "string" ) {
  			s.data = jQuery.param( s.data, s.traditional );
  		}
  
  		// Apply prefilters
  		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
  
  		// If request was aborted inside a prefilter, stop there
  		if ( completed ) {
  			return jqXHR;
  		}
  
  		// We can fire global events as of now if asked to
  		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
  		fireGlobals = jQuery.event && s.global;
  
  		// Watch for a new set of requests
  		if ( fireGlobals && jQuery.active++ === 0 ) {
  			jQuery.event.trigger( "ajaxStart" );
  		}
  
  		// Uppercase the type
  		s.type = s.type.toUpperCase();
  
  		// Determine if request has content
  		s.hasContent = !rnoContent.test( s.type );
  
  		// Save the URL in case we're toying with the If-Modified-Since
  		// and/or If-None-Match header later on
  		// Remove hash to simplify url manipulation
  		cacheURL = s.url.replace( rhash, "" );
  
  		// More options handling for requests with no content
  		if ( !s.hasContent ) {
  
  			// Remember the hash so we can put it back
  			uncached = s.url.slice( cacheURL.length );
  
  			// If data is available, append data to url
  			if ( s.data ) {
  				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
  
  				// #9682: remove data so that it's not used in an eventual retry
  				delete s.data;
  			}
  
  			// Add or update anti-cache param if needed
  			if ( s.cache === false ) {
  				cacheURL = cacheURL.replace( rantiCache, "$1" );
  				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
  			}
  
  			// Put hash and anti-cache on the URL that will be requested (gh-1732)
  			s.url = cacheURL + uncached;
  
  		// Change '%20' to '+' if this is encoded form body content (gh-2658)
  		} else if ( s.data && s.processData &&
  			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
  			s.data = s.data.replace( r20, "+" );
  		}
  
  		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
  		if ( s.ifModified ) {
  			if ( jQuery.lastModified[ cacheURL ] ) {
  				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
  			}
  			if ( jQuery.etag[ cacheURL ] ) {
  				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
  			}
  		}
  
  		// Set the correct header, if data is being sent
  		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
  			jqXHR.setRequestHeader( "Content-Type", s.contentType );
  		}
  
  		// Set the Accepts header for the server, depending on the dataType
  		jqXHR.setRequestHeader(
  			"Accept",
  			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
  				s.accepts[ s.dataTypes[ 0 ] ] +
  					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
  				s.accepts[ "*" ]
  		);
  
  		// Check for headers option
  		for ( i in s.headers ) {
  			jqXHR.setRequestHeader( i, s.headers[ i ] );
  		}
  
  		// Allow custom headers/mimetypes and early abort
  		if ( s.beforeSend &&
  			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {
  
  			// Abort if not done already and return
  			return jqXHR.abort();
  		}
  
  		// Aborting is no longer a cancellation
  		strAbort = "abort";
  
  		// Install callbacks on deferreds
  		completeDeferred.add( s.complete );
  		jqXHR.done( s.success );
  		jqXHR.fail( s.error );
  
  		// Get transport
  		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
  
  		// If no transport, we auto-abort
  		if ( !transport ) {
  			done( -1, "No Transport" );
  		} else {
  			jqXHR.readyState = 1;
  
  			// Send global event
  			if ( fireGlobals ) {
  				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
  			}
  
  			// If request was aborted inside ajaxSend, stop there
  			if ( completed ) {
  				return jqXHR;
  			}
  
  			// Timeout
  			if ( s.async && s.timeout > 0 ) {
  				timeoutTimer = window.setTimeout( function() {
  					jqXHR.abort( "timeout" );
  				}, s.timeout );
  			}
  
  			try {
  				completed = false;
  				transport.send( requestHeaders, done );
  			} catch ( e ) {
  
  				// Rethrow post-completion exceptions
  				if ( completed ) {
  					throw e;
  				}
  
  				// Propagate others as results
  				done( -1, e );
  			}
  		}
  
  		// Callback for when everything is done
  		function done( status, nativeStatusText, responses, headers ) {
  			var isSuccess, success, error, response, modified,
  				statusText = nativeStatusText;
  
  			// Ignore repeat invocations
  			if ( completed ) {
  				return;
  			}
  
  			completed = true;
  
  			// Clear timeout if it exists
  			if ( timeoutTimer ) {
  				window.clearTimeout( timeoutTimer );
  			}
  
  			// Dereference transport for early garbage collection
  			// (no matter how long the jqXHR object will be used)
  			transport = undefined;
  
  			// Cache response headers
  			responseHeadersString = headers || "";
  
  			// Set readyState
  			jqXHR.readyState = status > 0 ? 4 : 0;
  
  			// Determine if successful
  			isSuccess = status >= 200 && status < 300 || status === 304;
  
  			// Get response data
  			if ( responses ) {
  				response = ajaxHandleResponses( s, jqXHR, responses );
  			}
  
  			// Convert no matter what (that way responseXXX fields are always set)
  			response = ajaxConvert( s, response, jqXHR, isSuccess );
  
  			// If successful, handle type chaining
  			if ( isSuccess ) {
  
  				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
  				if ( s.ifModified ) {
  					modified = jqXHR.getResponseHeader( "Last-Modified" );
  					if ( modified ) {
  						jQuery.lastModified[ cacheURL ] = modified;
  					}
  					modified = jqXHR.getResponseHeader( "etag" );
  					if ( modified ) {
  						jQuery.etag[ cacheURL ] = modified;
  					}
  				}
  
  				// if no content
  				if ( status === 204 || s.type === "HEAD" ) {
  					statusText = "nocontent";
  
  				// if not modified
  				} else if ( status === 304 ) {
  					statusText = "notmodified";
  
  				// If we have data, let's convert it
  				} else {
  					statusText = response.state;
  					success = response.data;
  					error = response.error;
  					isSuccess = !error;
  				}
  			} else {
  
  				// Extract error from statusText and normalize for non-aborts
  				error = statusText;
  				if ( status || !statusText ) {
  					statusText = "error";
  					if ( status < 0 ) {
  						status = 0;
  					}
  				}
  			}
  
  			// Set data for the fake xhr object
  			jqXHR.status = status;
  			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
  
  			// Success/Error
  			if ( isSuccess ) {
  				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
  			} else {
  				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
  			}
  
  			// Status-dependent callbacks
  			jqXHR.statusCode( statusCode );
  			statusCode = undefined;
  
  			if ( fireGlobals ) {
  				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
  					[ jqXHR, s, isSuccess ? success : error ] );
  			}
  
  			// Complete
  			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
  
  			if ( fireGlobals ) {
  				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
  
  				// Handle the global AJAX counter
  				if ( !( --jQuery.active ) ) {
  					jQuery.event.trigger( "ajaxStop" );
  				}
  			}
  		}
  
  		return jqXHR;
  	},
  
  	getJSON: function( url, data, callback ) {
  		return jQuery.get( url, data, callback, "json" );
  	},
  
  	getScript: function( url, callback ) {
  		return jQuery.get( url, undefined, callback, "script" );
  	}
  } );
  
  jQuery.each( [ "get", "post" ], function( i, method ) {
  	jQuery[ method ] = function( url, data, callback, type ) {
  
  		// Shift arguments if data argument was omitted
  		if ( jQuery.isFunction( data ) ) {
  			type = type || callback;
  			callback = data;
  			data = undefined;
  		}
  
  		// The url can be an options object (which then must have .url)
  		return jQuery.ajax( jQuery.extend( {
  			url: url,
  			type: method,
  			dataType: type,
  			data: data,
  			success: callback
  		}, jQuery.isPlainObject( url ) && url ) );
  	};
  } );
  
  
  jQuery._evalUrl = function( url ) {
  	return jQuery.ajax( {
  		url: url,
  
  		// Make this explicit, since user can override this through ajaxSetup (#11264)
  		type: "GET",
  		dataType: "script",
  		cache: true,
  		async: false,
  		global: false,
  		"throws": true
  	} );
  };
  
  
  jQuery.fn.extend( {
  	wrapAll: function( html ) {
  		var wrap;
  
  		if ( this[ 0 ] ) {
  			if ( jQuery.isFunction( html ) ) {
  				html = html.call( this[ 0 ] );
  			}
  
  			// The elements to wrap the target around
  			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
  
  			if ( this[ 0 ].parentNode ) {
  				wrap.insertBefore( this[ 0 ] );
  			}
  
  			wrap.map( function() {
  				var elem = this;
  
  				while ( elem.firstElementChild ) {
  					elem = elem.firstElementChild;
  				}
  
  				return elem;
  			} ).append( this );
  		}
  
  		return this;
  	},
  
  	wrapInner: function( html ) {
  		if ( jQuery.isFunction( html ) ) {
  			return this.each( function( i ) {
  				jQuery( this ).wrapInner( html.call( this, i ) );
  			} );
  		}
  
  		return this.each( function() {
  			var self = jQuery( this ),
  				contents = self.contents();
  
  			if ( contents.length ) {
  				contents.wrapAll( html );
  
  			} else {
  				self.append( html );
  			}
  		} );
  	},
  
  	wrap: function( html ) {
  		var isFunction = jQuery.isFunction( html );
  
  		return this.each( function( i ) {
  			jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
  		} );
  	},
  
  	unwrap: function( selector ) {
  		this.parent( selector ).not( "body" ).each( function() {
  			jQuery( this ).replaceWith( this.childNodes );
  		} );
  		return this;
  	}
  } );
  
  
  jQuery.expr.pseudos.hidden = function( elem ) {
  	return !jQuery.expr.pseudos.visible( elem );
  };
  jQuery.expr.pseudos.visible = function( elem ) {
  	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
  };
  
  
  
  
  jQuery.ajaxSettings.xhr = function() {
  	try {
  		return new window.XMLHttpRequest();
  	} catch ( e ) {}
  };
  
  var xhrSuccessStatus = {
  
  		// File protocol always yields status code 0, assume 200
  		0: 200,
  
  		// Support: IE <=9 only
  		// #1450: sometimes IE returns 1223 when it should be 204
  		1223: 204
  	},
  	xhrSupported = jQuery.ajaxSettings.xhr();
  
  support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
  support.ajax = xhrSupported = !!xhrSupported;
  
  jQuery.ajaxTransport( function( options ) {
  	var callback, errorCallback;
  
  	// Cross domain only allowed if supported through XMLHttpRequest
  	if ( support.cors || xhrSupported && !options.crossDomain ) {
  		return {
  			send: function( headers, complete ) {
  				var i,
  					xhr = options.xhr();
  
  				xhr.open(
  					options.type,
  					options.url,
  					options.async,
  					options.username,
  					options.password
  				);
  
  				// Apply custom fields if provided
  				if ( options.xhrFields ) {
  					for ( i in options.xhrFields ) {
  						xhr[ i ] = options.xhrFields[ i ];
  					}
  				}
  
  				// Override mime type if needed
  				if ( options.mimeType && xhr.overrideMimeType ) {
  					xhr.overrideMimeType( options.mimeType );
  				}
  
  				// X-Requested-With header
  				// For cross-domain requests, seeing as conditions for a preflight are
  				// akin to a jigsaw puzzle, we simply never set it to be sure.
  				// (it can always be set on a per-request basis or even using ajaxSetup)
  				// For same-domain requests, won't change header if already provided.
  				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
  					headers[ "X-Requested-With" ] = "XMLHttpRequest";
  				}
  
  				// Set headers
  				for ( i in headers ) {
  					xhr.setRequestHeader( i, headers[ i ] );
  				}
  
  				// Callback
  				callback = function( type ) {
  					return function() {
  						if ( callback ) {
  							callback = errorCallback = xhr.onload =
  								xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
  
  							if ( type === "abort" ) {
  								xhr.abort();
  							} else if ( type === "error" ) {
  
  								// Support: IE <=9 only
  								// On a manual native abort, IE9 throws
  								// errors on any property access that is not readyState
  								if ( typeof xhr.status !== "number" ) {
  									complete( 0, "error" );
  								} else {
  									complete(
  
  										// File: protocol always yields status 0; see #8605, #14207
  										xhr.status,
  										xhr.statusText
  									);
  								}
  							} else {
  								complete(
  									xhrSuccessStatus[ xhr.status ] || xhr.status,
  									xhr.statusText,
  
  									// Support: IE <=9 only
  									// IE9 has no XHR2 but throws on binary (trac-11426)
  									// For XHR2 non-text, let the caller handle it (gh-2498)
  									( xhr.responseType || "text" ) !== "text"  ||
  									typeof xhr.responseText !== "string" ?
  										{ binary: xhr.response } :
  										{ text: xhr.responseText },
  									xhr.getAllResponseHeaders()
  								);
  							}
  						}
  					};
  				};
  
  				// Listen to events
  				xhr.onload = callback();
  				errorCallback = xhr.onerror = callback( "error" );
  
  				// Support: IE 9 only
  				// Use onreadystatechange to replace onabort
  				// to handle uncaught aborts
  				if ( xhr.onabort !== undefined ) {
  					xhr.onabort = errorCallback;
  				} else {
  					xhr.onreadystatechange = function() {
  
  						// Check readyState before timeout as it changes
  						if ( xhr.readyState === 4 ) {
  
  							// Allow onerror to be called first,
  							// but that will not handle a native abort
  							// Also, save errorCallback to a variable
  							// as xhr.onerror cannot be accessed
  							window.setTimeout( function() {
  								if ( callback ) {
  									errorCallback();
  								}
  							} );
  						}
  					};
  				}
  
  				// Create the abort callback
  				callback = callback( "abort" );
  
  				try {
  
  					// Do send the request (this may raise an exception)
  					xhr.send( options.hasContent && options.data || null );
  				} catch ( e ) {
  
  					// #14683: Only rethrow if this hasn't been notified as an error yet
  					if ( callback ) {
  						throw e;
  					}
  				}
  			},
  
  			abort: function() {
  				if ( callback ) {
  					callback();
  				}
  			}
  		};
  	}
  } );
  
  
  
  
  // Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
  jQuery.ajaxPrefilter( function( s ) {
  	if ( s.crossDomain ) {
  		s.contents.script = false;
  	}
  } );
  
  // Install script dataType
  jQuery.ajaxSetup( {
  	accepts: {
  		script: "text/javascript, application/javascript, " +
  			"application/ecmascript, application/x-ecmascript"
  	},
  	contents: {
  		script: /\b(?:java|ecma)script\b/
  	},
  	converters: {
  		"text script": function( text ) {
  			jQuery.globalEval( text );
  			return text;
  		}
  	}
  } );
  
  // Handle cache's special case and crossDomain
  jQuery.ajaxPrefilter( "script", function( s ) {
  	if ( s.cache === undefined ) {
  		s.cache = false;
  	}
  	if ( s.crossDomain ) {
  		s.type = "GET";
  	}
  } );
  
  // Bind script tag hack transport
  jQuery.ajaxTransport( "script", function( s ) {
  
  	// This transport only deals with cross domain requests
  	if ( s.crossDomain ) {
  		var script, callback;
  		return {
  			send: function( _, complete ) {
  				script = jQuery( "<script>" ).prop( {
  					charset: s.scriptCharset,
  					src: s.url
  				} ).on(
  					"load error",
  					callback = function( evt ) {
  						script.remove();
  						callback = null;
  						if ( evt ) {
  							complete( evt.type === "error" ? 404 : 200, evt.type );
  						}
  					}
  				);
  
  				// Use native DOM manipulation to avoid our domManip AJAX trickery
  				document.head.appendChild( script[ 0 ] );
  			},
  			abort: function() {
  				if ( callback ) {
  					callback();
  				}
  			}
  		};
  	}
  } );
  
  
  
  
  var oldCallbacks = [],
  	rjsonp = /(=)\?(?=&|$)|\?\?/;
  
  // Default jsonp settings
  jQuery.ajaxSetup( {
  	jsonp: "callback",
  	jsonpCallback: function() {
  		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
  		this[ callback ] = true;
  		return callback;
  	}
  } );
  
  // Detect, normalize options and install callbacks for jsonp requests
  jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
  
  	var callbackName, overwritten, responseContainer,
  		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
  			"url" :
  			typeof s.data === "string" &&
  				( s.contentType || "" )
  					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
  				rjsonp.test( s.data ) && "data"
  		);
  
  	// Handle iff the expected data type is "jsonp" or we have a parameter to set
  	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
  
  		// Get callback name, remembering preexisting value associated with it
  		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
  			s.jsonpCallback() :
  			s.jsonpCallback;
  
  		// Insert callback into url or form data
  		if ( jsonProp ) {
  			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
  		} else if ( s.jsonp !== false ) {
  			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
  		}
  
  		// Use data converter to retrieve json after script execution
  		s.converters[ "script json" ] = function() {
  			if ( !responseContainer ) {
  				jQuery.error( callbackName + " was not called" );
  			}
  			return responseContainer[ 0 ];
  		};
  
  		// Force json dataType
  		s.dataTypes[ 0 ] = "json";
  
  		// Install callback
  		overwritten = window[ callbackName ];
  		window[ callbackName ] = function() {
  			responseContainer = arguments;
  		};
  
  		// Clean-up function (fires after converters)
  		jqXHR.always( function() {
  
  			// If previous value didn't exist - remove it
  			if ( overwritten === undefined ) {
  				jQuery( window ).removeProp( callbackName );
  
  			// Otherwise restore preexisting value
  			} else {
  				window[ callbackName ] = overwritten;
  			}
  
  			// Save back as free
  			if ( s[ callbackName ] ) {
  
  				// Make sure that re-using the options doesn't screw things around
  				s.jsonpCallback = originalSettings.jsonpCallback;
  
  				// Save the callback name for future use
  				oldCallbacks.push( callbackName );
  			}
  
  			// Call if it was a function and we have a response
  			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
  				overwritten( responseContainer[ 0 ] );
  			}
  
  			responseContainer = overwritten = undefined;
  		} );
  
  		// Delegate to script
  		return "script";
  	}
  } );
  
  
  
  
  // Support: Safari 8 only
  // In Safari 8 documents created via document.implementation.createHTMLDocument
  // collapse sibling forms: the second one becomes a child of the first one.
  // Because of that, this security measure has to be disabled in Safari 8.
  // https://bugs.webkit.org/show_bug.cgi?id=137337
  support.createHTMLDocument = ( function() {
  	var body = document.implementation.createHTMLDocument( "" ).body;
  	body.innerHTML = "<form></form><form></form>";
  	return body.childNodes.length === 2;
  } )();
  
  
  // Argument "data" should be string of html
  // context (optional): If specified, the fragment will be created in this context,
  // defaults to document
  // keepScripts (optional): If true, will include scripts passed in the html string
  jQuery.parseHTML = function( data, context, keepScripts ) {
  	if ( typeof data !== "string" ) {
  		return [];
  	}
  	if ( typeof context === "boolean" ) {
  		keepScripts = context;
  		context = false;
  	}
  
  	var base, parsed, scripts;
  
  	if ( !context ) {
  
  		// Stop scripts or inline event handlers from being executed immediately
  		// by using document.implementation
  		if ( support.createHTMLDocument ) {
  			context = document.implementation.createHTMLDocument( "" );
  
  			// Set the base href for the created document
  			// so any parsed elements with URLs
  			// are based on the document's URL (gh-2965)
  			base = context.createElement( "base" );
  			base.href = document.location.href;
  			context.head.appendChild( base );
  		} else {
  			context = document;
  		}
  	}
  
  	parsed = rsingleTag.exec( data );
  	scripts = !keepScripts && [];
  
  	// Single tag
  	if ( parsed ) {
  		return [ context.createElement( parsed[ 1 ] ) ];
  	}
  
  	parsed = buildFragment( [ data ], context, scripts );
  
  	if ( scripts && scripts.length ) {
  		jQuery( scripts ).remove();
  	}
  
  	return jQuery.merge( [], parsed.childNodes );
  };
  
  
  /**
   * Load a url into a page
   */
  jQuery.fn.load = function( url, params, callback ) {
  	var selector, type, response,
  		self = this,
  		off = url.indexOf( " " );
  
  	if ( off > -1 ) {
  		selector = stripAndCollapse( url.slice( off ) );
  		url = url.slice( 0, off );
  	}
  
  	// If it's a function
  	if ( jQuery.isFunction( params ) ) {
  
  		// We assume that it's the callback
  		callback = params;
  		params = undefined;
  
  	// Otherwise, build a param string
  	} else if ( params && typeof params === "object" ) {
  		type = "POST";
  	}
  
  	// If we have elements to modify, make the request
  	if ( self.length > 0 ) {
  		jQuery.ajax( {
  			url: url,
  
  			// If "type" variable is undefined, then "GET" method will be used.
  			// Make value of this field explicit since
  			// user can override it through ajaxSetup method
  			type: type || "GET",
  			dataType: "html",
  			data: params
  		} ).done( function( responseText ) {
  
  			// Save response for use in complete callback
  			response = arguments;
  
  			self.html( selector ?
  
  				// If a selector was specified, locate the right elements in a dummy div
  				// Exclude scripts to avoid IE 'Permission Denied' errors
  				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :
  
  				// Otherwise use the full result
  				responseText );
  
  		// If the request succeeds, this function gets "data", "status", "jqXHR"
  		// but they are ignored because response was set above.
  		// If it fails, this function gets "jqXHR", "status", "error"
  		} ).always( callback && function( jqXHR, status ) {
  			self.each( function() {
  				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
  			} );
  		} );
  	}
  
  	return this;
  };
  
  
  
  
  // Attach a bunch of functions for handling common AJAX events
  jQuery.each( [
  	"ajaxStart",
  	"ajaxStop",
  	"ajaxComplete",
  	"ajaxError",
  	"ajaxSuccess",
  	"ajaxSend"
  ], function( i, type ) {
  	jQuery.fn[ type ] = function( fn ) {
  		return this.on( type, fn );
  	};
  } );
  
  
  
  
  jQuery.expr.pseudos.animated = function( elem ) {
  	return jQuery.grep( jQuery.timers, function( fn ) {
  		return elem === fn.elem;
  	} ).length;
  };
  
  
  
  
  jQuery.offset = {
  	setOffset: function( elem, options, i ) {
  		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
  			position = jQuery.css( elem, "position" ),
  			curElem = jQuery( elem ),
  			props = {};
  
  		// Set position first, in-case top/left are set even on static elem
  		if ( position === "static" ) {
  			elem.style.position = "relative";
  		}
  
  		curOffset = curElem.offset();
  		curCSSTop = jQuery.css( elem, "top" );
  		curCSSLeft = jQuery.css( elem, "left" );
  		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
  			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;
  
  		// Need to be able to calculate position if either
  		// top or left is auto and position is either absolute or fixed
  		if ( calculatePosition ) {
  			curPosition = curElem.position();
  			curTop = curPosition.top;
  			curLeft = curPosition.left;
  
  		} else {
  			curTop = parseFloat( curCSSTop ) || 0;
  			curLeft = parseFloat( curCSSLeft ) || 0;
  		}
  
  		if ( jQuery.isFunction( options ) ) {
  
  			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
  			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
  		}
  
  		if ( options.top != null ) {
  			props.top = ( options.top - curOffset.top ) + curTop;
  		}
  		if ( options.left != null ) {
  			props.left = ( options.left - curOffset.left ) + curLeft;
  		}
  
  		if ( "using" in options ) {
  			options.using.call( elem, props );
  
  		} else {
  			curElem.css( props );
  		}
  	}
  };
  
  jQuery.fn.extend( {
  	offset: function( options ) {
  
  		// Preserve chaining for setter
  		if ( arguments.length ) {
  			return options === undefined ?
  				this :
  				this.each( function( i ) {
  					jQuery.offset.setOffset( this, options, i );
  				} );
  		}
  
  		var doc, docElem, rect, win,
  			elem = this[ 0 ];
  
  		if ( !elem ) {
  			return;
  		}
  
  		// Return zeros for disconnected and hidden (display: none) elements (gh-2310)
  		// Support: IE <=11 only
  		// Running getBoundingClientRect on a
  		// disconnected node in IE throws an error
  		if ( !elem.getClientRects().length ) {
  			return { top: 0, left: 0 };
  		}
  
  		rect = elem.getBoundingClientRect();
  
  		doc = elem.ownerDocument;
  		docElem = doc.documentElement;
  		win = doc.defaultView;
  
  		return {
  			top: rect.top + win.pageYOffset - docElem.clientTop,
  			left: rect.left + win.pageXOffset - docElem.clientLeft
  		};
  	},
  
  	position: function() {
  		if ( !this[ 0 ] ) {
  			return;
  		}
  
  		var offsetParent, offset,
  			elem = this[ 0 ],
  			parentOffset = { top: 0, left: 0 };
  
  		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
  		// because it is its only offset parent
  		if ( jQuery.css( elem, "position" ) === "fixed" ) {
  
  			// Assume getBoundingClientRect is there when computed position is fixed
  			offset = elem.getBoundingClientRect();
  
  		} else {
  
  			// Get *real* offsetParent
  			offsetParent = this.offsetParent();
  
  			// Get correct offsets
  			offset = this.offset();
  			if ( !nodeName( offsetParent[ 0 ], "html" ) ) {
  				parentOffset = offsetParent.offset();
  			}
  
  			// Add offsetParent borders
  			parentOffset = {
  				top: parentOffset.top + jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ),
  				left: parentOffset.left + jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true )
  			};
  		}
  
  		// Subtract parent offsets and element margins
  		return {
  			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
  			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
  		};
  	},
  
  	// This method will return documentElement in the following cases:
  	// 1) For the element inside the iframe without offsetParent, this method will return
  	//    documentElement of the parent window
  	// 2) For the hidden or detached element
  	// 3) For body or html element, i.e. in case of the html node - it will return itself
  	//
  	// but those exceptions were never presented as a real life use-cases
  	// and might be considered as more preferable results.
  	//
  	// This logic, however, is not guaranteed and can change at any point in the future
  	offsetParent: function() {
  		return this.map( function() {
  			var offsetParent = this.offsetParent;
  
  			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
  				offsetParent = offsetParent.offsetParent;
  			}
  
  			return offsetParent || documentElement;
  		} );
  	}
  } );
  
  // Create scrollLeft and scrollTop methods
  jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
  	var top = "pageYOffset" === prop;
  
  	jQuery.fn[ method ] = function( val ) {
  		return access( this, function( elem, method, val ) {
  
  			// Coalesce documents and windows
  			var win;
  			if ( jQuery.isWindow( elem ) ) {
  				win = elem;
  			} else if ( elem.nodeType === 9 ) {
  				win = elem.defaultView;
  			}
  
  			if ( val === undefined ) {
  				return win ? win[ prop ] : elem[ method ];
  			}
  
  			if ( win ) {
  				win.scrollTo(
  					!top ? val : win.pageXOffset,
  					top ? val : win.pageYOffset
  				);
  
  			} else {
  				elem[ method ] = val;
  			}
  		}, method, val, arguments.length );
  	};
  } );
  
  // Support: Safari <=7 - 9.1, Chrome <=37 - 49
  // Add the top/left cssHooks using jQuery.fn.position
  // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
  // Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
  // getComputedStyle returns percent when specified for top/left/bottom/right;
  // rather than make the css module depend on the offset module, just check for it here
  jQuery.each( [ "top", "left" ], function( i, prop ) {
  	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
  		function( elem, computed ) {
  			if ( computed ) {
  				computed = curCSS( elem, prop );
  
  				// If curCSS returns percentage, fallback to offset
  				return rnumnonpx.test( computed ) ?
  					jQuery( elem ).position()[ prop ] + "px" :
  					computed;
  			}
  		}
  	);
  } );
  
  
  // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
  jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
  	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
  		function( defaultExtra, funcName ) {
  
  		// Margin is only for outerHeight, outerWidth
  		jQuery.fn[ funcName ] = function( margin, value ) {
  			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
  				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
  
  			return access( this, function( elem, type, value ) {
  				var doc;
  
  				if ( jQuery.isWindow( elem ) ) {
  
  					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
  					return funcName.indexOf( "outer" ) === 0 ?
  						elem[ "inner" + name ] :
  						elem.document.documentElement[ "client" + name ];
  				}
  
  				// Get document width or height
  				if ( elem.nodeType === 9 ) {
  					doc = elem.documentElement;
  
  					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
  					// whichever is greatest
  					return Math.max(
  						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
  						elem.body[ "offset" + name ], doc[ "offset" + name ],
  						doc[ "client" + name ]
  					);
  				}
  
  				return value === undefined ?
  
  					// Get width or height on the element, requesting but not forcing parseFloat
  					jQuery.css( elem, type, extra ) :
  
  					// Set width or height on the element
  					jQuery.style( elem, type, value, extra );
  			}, type, chainable ? margin : undefined, chainable );
  		};
  	} );
  } );
  
  
  jQuery.fn.extend( {
  
  	bind: function( types, data, fn ) {
  		return this.on( types, null, data, fn );
  	},
  	unbind: function( types, fn ) {
  		return this.off( types, null, fn );
  	},
  
  	delegate: function( selector, types, data, fn ) {
  		return this.on( types, selector, data, fn );
  	},
  	undelegate: function( selector, types, fn ) {
  
  		// ( namespace ) or ( selector, types [, fn] )
  		return arguments.length === 1 ?
  			this.off( selector, "**" ) :
  			this.off( types, selector || "**", fn );
  	}
  } );
  
  jQuery.holdReady = function( hold ) {
  	if ( hold ) {
  		jQuery.readyWait++;
  	} else {
  		jQuery.ready( true );
  	}
  };
  jQuery.isArray = Array.isArray;
  jQuery.parseJSON = JSON.parse;
  jQuery.nodeName = nodeName;
  
  
  
  
  // Register as a named AMD module, since jQuery can be concatenated with other
  // files that may use define, but not via a proper concatenation script that
  // understands anonymous AMD modules. A named AMD is safest and most robust
  // way to register. Lowercase jquery is used because AMD module names are
  // derived from file names, and jQuery is normally delivered in a lowercase
  // file name. Do this after creating the global so that if an AMD module wants
  // to call noConflict to hide this version of jQuery, it will work.
  
  // Note that for maximum portability, libraries that are not jQuery should
  // declare themselves as anonymous modules, and avoid setting a global if an
  // AMD loader is present. jQuery is a special case. For more information, see
  // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon
  
  if ( typeof define === "function" && define.amd ) {
  	define( "jquery", [], function() {
  		return jQuery;
  	} );
  }
  
  
  
  
  var
  
  	// Map over jQuery in case of overwrite
  	_jQuery = window.jQuery,
  
  	// Map over the $ in case of overwrite
  	_$ = window.$;
  
  jQuery.noConflict = function( deep ) {
  	if ( window.$ === jQuery ) {
  		window.$ = _$;
  	}
  
  	if ( deep && window.jQuery === jQuery ) {
  		window.jQuery = _jQuery;
  	}
  
  	return jQuery;
  };
  
  // Expose jQuery and $ identifiers, even in AMD
  // (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
  // and CommonJS for browser emulators (#13566)
  if ( !noGlobal ) {
  	window.jQuery = window.$ = jQuery;
  }
  
  
  
  
  return jQuery;
  } );
  
  },{}],6:[function(require,module,exports){
  /*!
   * Knockout JavaScript library v3.4.2
   * (c) The Knockout.js team - http://knockoutjs.com/
   * License: MIT (http://www.opensource.org/licenses/mit-license.php)
   */
  
  (function(){
  var DEBUG=true;
  (function(undefined){
      // (0, eval)('this') is a robust way of getting a reference to the global object
      // For details, see http://stackoverflow.com/questions/14119988/return-this-0-evalthis/14120023#14120023
      var window = this || (0, eval)('this'),
          document = window['document'],
          navigator = window['navigator'],
          jQueryInstance = window["jQuery"],
          JSON = window["JSON"];
  (function(factory) {
      // Support three module loading scenarios
      if (typeof define === 'function' && define['amd']) {
          // [1] AMD anonymous module
          define(['exports', 'require'], factory);
      } else if (typeof exports === 'object' && typeof module === 'object') {
          // [2] CommonJS/Node.js
          factory(module['exports'] || exports);  // module.exports is for Node.js
      } else {
          // [3] No module loader (plain <script> tag) - put directly in global namespace
          factory(window['ko'] = {});
      }
  }(function(koExports, amdRequire){
  // Internally, all KO objects are attached to koExports (even the non-exported ones whose names will be minified by the closure compiler).
  // In the future, the following "ko" variable may be made distinct from "koExports" so that private objects are not externally reachable.
  var ko = typeof koExports !== 'undefined' ? koExports : {};
  // Google Closure Compiler helpers (used only to make the minified file smaller)
  ko.exportSymbol = function(koPath, object) {
      var tokens = koPath.split(".");
  
      // In the future, "ko" may become distinct from "koExports" (so that non-exported objects are not reachable)
      // At that point, "target" would be set to: (typeof koExports !== "undefined" ? koExports : ko)
      var target = ko;
  
      for (var i = 0; i < tokens.length - 1; i++)
          target = target[tokens[i]];
      target[tokens[tokens.length - 1]] = object;
  };
  ko.exportProperty = function(owner, publicName, object) {
      owner[publicName] = object;
  };
  ko.version = "3.4.2";
  
  ko.exportSymbol('version', ko.version);
  // For any options that may affect various areas of Knockout and aren't directly associated with data binding.
  ko.options = {
      'deferUpdates': false,
      'useOnlyNativeEvents': false
  };
  
  //ko.exportSymbol('options', ko.options);   // 'options' isn't minified
  ko.utils = (function () {
      function objectForEach(obj, action) {
          for (var prop in obj) {
              if (obj.hasOwnProperty(prop)) {
                  action(prop, obj[prop]);
              }
          }
      }
  
      function extend(target, source) {
          if (source) {
              for(var prop in source) {
                  if(source.hasOwnProperty(prop)) {
                      target[prop] = source[prop];
                  }
              }
          }
          return target;
      }
  
      function setPrototypeOf(obj, proto) {
          obj.__proto__ = proto;
          return obj;
      }
  
      var canSetPrototype = ({ __proto__: [] } instanceof Array);
      var canUseSymbols = !DEBUG && typeof Symbol === 'function';
  
      // Represent the known event types in a compact way, then at runtime transform it into a hash with event name as key (for fast lookup)
      var knownEvents = {}, knownEventTypesByEventName = {};
      var keyEventTypeName = (navigator && /Firefox\/2/i.test(navigator.userAgent)) ? 'KeyboardEvent' : 'UIEvents';
      knownEvents[keyEventTypeName] = ['keyup', 'keydown', 'keypress'];
      knownEvents['MouseEvents'] = ['click', 'dblclick', 'mousedown', 'mouseup', 'mousemove', 'mouseover', 'mouseout', 'mouseenter', 'mouseleave'];
      objectForEach(knownEvents, function(eventType, knownEventsForType) {
          if (knownEventsForType.length) {
              for (var i = 0, j = knownEventsForType.length; i < j; i++)
                  knownEventTypesByEventName[knownEventsForType[i]] = eventType;
          }
      });
      var eventsThatMustBeRegisteredUsingAttachEvent = { 'propertychange': true }; // Workaround for an IE9 issue - https://github.com/SteveSanderson/knockout/issues/406
  
      // Detect IE versions for bug workarounds (uses IE conditionals, not UA string, for robustness)
      // Note that, since IE 10 does not support conditional comments, the following logic only detects IE < 10.
      // Currently this is by design, since IE 10+ behaves correctly when treated as a standard browser.
      // If there is a future need to detect specific versions of IE10+, we will amend this.
      var ieVersion = document && (function() {
          var version = 3, div = document.createElement('div'), iElems = div.getElementsByTagName('i');
  
          // Keep constructing conditional HTML blocks until we hit one that resolves to an empty fragment
          while (
              div.innerHTML = '<!--[if gt IE ' + (++version) + ']><i></i><![endif]-->',
              iElems[0]
          ) {}
          return version > 4 ? version : undefined;
      }());
      var isIe6 = ieVersion === 6,
          isIe7 = ieVersion === 7;
  
      function isClickOnCheckableElement(element, eventType) {
          if ((ko.utils.tagNameLower(element) !== "input") || !element.type) return false;
          if (eventType.toLowerCase() != "click") return false;
          var inputType = element.type;
          return (inputType == "checkbox") || (inputType == "radio");
      }
  
      // For details on the pattern for changing node classes
      // see: https://github.com/knockout/knockout/issues/1597
      var cssClassNameRegex = /\S+/g;
  
      function toggleDomNodeCssClass(node, classNames, shouldHaveClass) {
          var addOrRemoveFn;
          if (classNames) {
              if (typeof node.classList === 'object') {
                  addOrRemoveFn = node.classList[shouldHaveClass ? 'add' : 'remove'];
                  ko.utils.arrayForEach(classNames.match(cssClassNameRegex), function(className) {
                      addOrRemoveFn.call(node.classList, className);
                  });
              } else if (typeof node.className['baseVal'] === 'string') {
                  // SVG tag .classNames is an SVGAnimatedString instance
                  toggleObjectClassPropertyString(node.className, 'baseVal', classNames, shouldHaveClass);
              } else {
                  // node.className ought to be a string.
                  toggleObjectClassPropertyString(node, 'className', classNames, shouldHaveClass);
              }
          }
      }
  
      function toggleObjectClassPropertyString(obj, prop, classNames, shouldHaveClass) {
          // obj/prop is either a node/'className' or a SVGAnimatedString/'baseVal'.
          var currentClassNames = obj[prop].match(cssClassNameRegex) || [];
          ko.utils.arrayForEach(classNames.match(cssClassNameRegex), function(className) {
              ko.utils.addOrRemoveItem(currentClassNames, className, shouldHaveClass);
          });
          obj[prop] = currentClassNames.join(" ");
      }
  
      return {
          fieldsIncludedWithJsonPost: ['authenticity_token', /^__RequestVerificationToken(_.*)?$/],
  
          arrayForEach: function (array, action) {
              for (var i = 0, j = array.length; i < j; i++)
                  action(array[i], i);
          },
  
          arrayIndexOf: function (array, item) {
              if (typeof Array.prototype.indexOf == "function")
                  return Array.prototype.indexOf.call(array, item);
              for (var i = 0, j = array.length; i < j; i++)
                  if (array[i] === item)
                      return i;
              return -1;
          },
  
          arrayFirst: function (array, predicate, predicateOwner) {
              for (var i = 0, j = array.length; i < j; i++)
                  if (predicate.call(predicateOwner, array[i], i))
                      return array[i];
              return null;
          },
  
          arrayRemoveItem: function (array, itemToRemove) {
              var index = ko.utils.arrayIndexOf(array, itemToRemove);
              if (index > 0) {
                  array.splice(index, 1);
              }
              else if (index === 0) {
                  array.shift();
              }
          },
  
          arrayGetDistinctValues: function (array) {
              array = array || [];
              var result = [];
              for (var i = 0, j = array.length; i < j; i++) {
                  if (ko.utils.arrayIndexOf(result, array[i]) < 0)
                      result.push(array[i]);
              }
              return result;
          },
  
          arrayMap: function (array, mapping) {
              array = array || [];
              var result = [];
              for (var i = 0, j = array.length; i < j; i++)
                  result.push(mapping(array[i], i));
              return result;
          },
  
          arrayFilter: function (array, predicate) {
              array = array || [];
              var result = [];
              for (var i = 0, j = array.length; i < j; i++)
                  if (predicate(array[i], i))
                      result.push(array[i]);
              return result;
          },
  
          arrayPushAll: function (array, valuesToPush) {
              if (valuesToPush instanceof Array)
                  array.push.apply(array, valuesToPush);
              else
                  for (var i = 0, j = valuesToPush.length; i < j; i++)
                      array.push(valuesToPush[i]);
              return array;
          },
  
          addOrRemoveItem: function(array, value, included) {
              var existingEntryIndex = ko.utils.arrayIndexOf(ko.utils.peekObservable(array), value);
              if (existingEntryIndex < 0) {
                  if (included)
                      array.push(value);
              } else {
                  if (!included)
                      array.splice(existingEntryIndex, 1);
              }
          },
  
          canSetPrototype: canSetPrototype,
  
          extend: extend,
  
          setPrototypeOf: setPrototypeOf,
  
          setPrototypeOfOrExtend: canSetPrototype ? setPrototypeOf : extend,
  
          objectForEach: objectForEach,
  
          objectMap: function(source, mapping) {
              if (!source)
                  return source;
              var target = {};
              for (var prop in source) {
                  if (source.hasOwnProperty(prop)) {
                      target[prop] = mapping(source[prop], prop, source);
                  }
              }
              return target;
          },
  
          emptyDomNode: function (domNode) {
              while (domNode.firstChild) {
                  ko.removeNode(domNode.firstChild);
              }
          },
  
          moveCleanedNodesToContainerElement: function(nodes) {
              // Ensure it's a real array, as we're about to reparent the nodes and
              // we don't want the underlying collection to change while we're doing that.
              var nodesArray = ko.utils.makeArray(nodes);
              var templateDocument = (nodesArray[0] && nodesArray[0].ownerDocument) || document;
  
              var container = templateDocument.createElement('div');
              for (var i = 0, j = nodesArray.length; i < j; i++) {
                  container.appendChild(ko.cleanNode(nodesArray[i]));
              }
              return container;
          },
  
          cloneNodes: function (nodesArray, shouldCleanNodes) {
              for (var i = 0, j = nodesArray.length, newNodesArray = []; i < j; i++) {
                  var clonedNode = nodesArray[i].cloneNode(true);
                  newNodesArray.push(shouldCleanNodes ? ko.cleanNode(clonedNode) : clonedNode);
              }
              return newNodesArray;
          },
  
          setDomNodeChildren: function (domNode, childNodes) {
              ko.utils.emptyDomNode(domNode);
              if (childNodes) {
                  for (var i = 0, j = childNodes.length; i < j; i++)
                      domNode.appendChild(childNodes[i]);
              }
          },
  
          replaceDomNodes: function (nodeToReplaceOrNodeArray, newNodesArray) {
              var nodesToReplaceArray = nodeToReplaceOrNodeArray.nodeType ? [nodeToReplaceOrNodeArray] : nodeToReplaceOrNodeArray;
              if (nodesToReplaceArray.length > 0) {
                  var insertionPoint = nodesToReplaceArray[0];
                  var parent = insertionPoint.parentNode;
                  for (var i = 0, j = newNodesArray.length; i < j; i++)
                      parent.insertBefore(newNodesArray[i], insertionPoint);
                  for (var i = 0, j = nodesToReplaceArray.length; i < j; i++) {
                      ko.removeNode(nodesToReplaceArray[i]);
                  }
              }
          },
  
          fixUpContinuousNodeArray: function(continuousNodeArray, parentNode) {
              // Before acting on a set of nodes that were previously outputted by a template function, we have to reconcile
              // them against what is in the DOM right now. It may be that some of the nodes have already been removed, or that
              // new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
              // leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
              // So, this function translates the old "map" output array into its best guess of the set of current DOM nodes.
              //
              // Rules:
              //   [A] Any leading nodes that have been removed should be ignored
              //       These most likely correspond to memoization nodes that were already removed during binding
              //       See https://github.com/knockout/knockout/pull/440
              //   [B] Any trailing nodes that have been remove should be ignored
              //       This prevents the code here from adding unrelated nodes to the array while processing rule [C]
              //       See https://github.com/knockout/knockout/pull/1903
              //   [C] We want to output a continuous series of nodes. So, ignore any nodes that have already been removed,
              //       and include any nodes that have been inserted among the previous collection
  
              if (continuousNodeArray.length) {
                  // The parent node can be a virtual element; so get the real parent node
                  parentNode = (parentNode.nodeType === 8 && parentNode.parentNode) || parentNode;
  
                  // Rule [A]
                  while (continuousNodeArray.length && continuousNodeArray[0].parentNode !== parentNode)
                      continuousNodeArray.splice(0, 1);
  
                  // Rule [B]
                  while (continuousNodeArray.length > 1 && continuousNodeArray[continuousNodeArray.length - 1].parentNode !== parentNode)
                      continuousNodeArray.length--;
  
                  // Rule [C]
                  if (continuousNodeArray.length > 1) {
                      var current = continuousNodeArray[0], last = continuousNodeArray[continuousNodeArray.length - 1];
                      // Replace with the actual new continuous node set
                      continuousNodeArray.length = 0;
                      while (current !== last) {
                          continuousNodeArray.push(current);
                          current = current.nextSibling;
                      }
                      continuousNodeArray.push(last);
                  }
              }
              return continuousNodeArray;
          },
  
          setOptionNodeSelectionState: function (optionNode, isSelected) {
              // IE6 sometimes throws "unknown error" if you try to write to .selected directly, whereas Firefox struggles with setAttribute. Pick one based on browser.
              if (ieVersion < 7)
                  optionNode.setAttribute("selected", isSelected);
              else
                  optionNode.selected = isSelected;
          },
  
          stringTrim: function (string) {
              return string === null || string === undefined ? '' :
                  string.trim ?
                      string.trim() :
                      string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, '');
          },
  
          stringStartsWith: function (string, startsWith) {
              string = string || "";
              if (startsWith.length > string.length)
                  return false;
              return string.substring(0, startsWith.length) === startsWith;
          },
  
          domNodeIsContainedBy: function (node, containedByNode) {
              if (node === containedByNode)
                  return true;
              if (node.nodeType === 11)
                  return false; // Fixes issue #1162 - can't use node.contains for document fragments on IE8
              if (containedByNode.contains)
                  return containedByNode.contains(node.nodeType === 3 ? node.parentNode : node);
              if (containedByNode.compareDocumentPosition)
                  return (containedByNode.compareDocumentPosition(node) & 16) == 16;
              while (node && node != containedByNode) {
                  node = node.parentNode;
              }
              return !!node;
          },
  
          domNodeIsAttachedToDocument: function (node) {
              return ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement);
          },
  
          anyDomNodeIsAttachedToDocument: function(nodes) {
              return !!ko.utils.arrayFirst(nodes, ko.utils.domNodeIsAttachedToDocument);
          },
  
          tagNameLower: function(element) {
              // For HTML elements, tagName will always be upper case; for XHTML elements, it'll be lower case.
              // Possible future optimization: If we know it's an element from an XHTML document (not HTML),
              // we don't need to do the .toLowerCase() as it will always be lower case anyway.
              return element && element.tagName && element.tagName.toLowerCase();
          },
  
          catchFunctionErrors: function (delegate) {
              return ko['onError'] ? function () {
                  try {
                      return delegate.apply(this, arguments);
                  } catch (e) {
                      ko['onError'] && ko['onError'](e);
                      throw e;
                  }
              } : delegate;
          },
  
          setTimeout: function (handler, timeout) {
              return setTimeout(ko.utils.catchFunctionErrors(handler), timeout);
          },
  
          deferError: function (error) {
              setTimeout(function () {
                  ko['onError'] && ko['onError'](error);
                  throw error;
              }, 0);
          },
  
          registerEventHandler: function (element, eventType, handler) {
              var wrappedHandler = ko.utils.catchFunctionErrors(handler);
  
              var mustUseAttachEvent = ieVersion && eventsThatMustBeRegisteredUsingAttachEvent[eventType];
              if (!ko.options['useOnlyNativeEvents'] && !mustUseAttachEvent && jQueryInstance) {
                  jQueryInstance(element)['bind'](eventType, wrappedHandler);
              } else if (!mustUseAttachEvent && typeof element.addEventListener == "function")
                  element.addEventListener(eventType, wrappedHandler, false);
              else if (typeof element.attachEvent != "undefined") {
                  var attachEventHandler = function (event) { wrappedHandler.call(element, event); },
                      attachEventName = "on" + eventType;
                  element.attachEvent(attachEventName, attachEventHandler);
  
                  // IE does not dispose attachEvent handlers automatically (unlike with addEventListener)
                  // so to avoid leaks, we have to remove them manually. See bug #856
                  ko.utils.domNodeDisposal.addDisposeCallback(element, function() {
                      element.detachEvent(attachEventName, attachEventHandler);
                  });
              } else
                  throw new Error("Browser doesn't support addEventListener or attachEvent");
          },
  
          triggerEvent: function (element, eventType) {
              if (!(element && element.nodeType))
                  throw new Error("element must be a DOM node when calling triggerEvent");
  
              // For click events on checkboxes and radio buttons, jQuery toggles the element checked state *after* the
              // event handler runs instead of *before*. (This was fixed in 1.9 for checkboxes but not for radio buttons.)
              // IE doesn't change the checked state when you trigger the click event using "fireEvent".
              // In both cases, we'll use the click method instead.
              var useClickWorkaround = isClickOnCheckableElement(element, eventType);
  
              if (!ko.options['useOnlyNativeEvents'] && jQueryInstance && !useClickWorkaround) {
                  jQueryInstance(element)['trigger'](eventType);
              } else if (typeof document.createEvent == "function") {
                  if (typeof element.dispatchEvent == "function") {
                      var eventCategory = knownEventTypesByEventName[eventType] || "HTMLEvents";
                      var event = document.createEvent(eventCategory);
                      event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element);
                      element.dispatchEvent(event);
                  }
                  else
                      throw new Error("The supplied element doesn't support dispatchEvent");
              } else if (useClickWorkaround && element.click) {
                  element.click();
              } else if (typeof element.fireEvent != "undefined") {
                  element.fireEvent("on" + eventType);
              } else {
                  throw new Error("Browser doesn't support triggering events");
              }
          },
  
          unwrapObservable: function (value) {
              return ko.isObservable(value) ? value() : value;
          },
  
          peekObservable: function (value) {
              return ko.isObservable(value) ? value.peek() : value;
          },
  
          toggleDomNodeCssClass: toggleDomNodeCssClass,
  
          setTextContent: function(element, textContent) {
              var value = ko.utils.unwrapObservable(textContent);
              if ((value === null) || (value === undefined))
                  value = "";
  
              // We need there to be exactly one child: a text node.
              // If there are no children, more than one, or if it's not a text node,
              // we'll clear everything and create a single text node.
              var innerTextNode = ko.virtualElements.firstChild(element);
              if (!innerTextNode || innerTextNode.nodeType != 3 || ko.virtualElements.nextSibling(innerTextNode)) {
                  ko.virtualElements.setDomNodeChildren(element, [element.ownerDocument.createTextNode(value)]);
              } else {
                  innerTextNode.data = value;
              }
  
              ko.utils.forceRefresh(element);
          },
  
          setElementName: function(element, name) {
              element.name = name;
  
              // Workaround IE 6/7 issue
              // - https://github.com/SteveSanderson/knockout/issues/197
              // - http://www.matts411.com/post/setting_the_name_attribute_in_ie_dom/
              if (ieVersion <= 7) {
                  try {
                      element.mergeAttributes(document.createElement("<input name='" + element.name + "'/>"), false);
                  }
                  catch(e) {} // For IE9 with doc mode "IE9 Standards" and browser mode "IE9 Compatibility View"
              }
          },
  
          forceRefresh: function(node) {
              // Workaround for an IE9 rendering bug - https://github.com/SteveSanderson/knockout/issues/209
              if (ieVersion >= 9) {
                  // For text nodes and comment nodes (most likely virtual elements), we will have to refresh the container
                  var elem = node.nodeType == 1 ? node : node.parentNode;
                  if (elem.style)
                      elem.style.zoom = elem.style.zoom;
              }
          },
  
          ensureSelectElementIsRenderedCorrectly: function(selectElement) {
              // Workaround for IE9 rendering bug - it doesn't reliably display all the text in dynamically-added select boxes unless you force it to re-render by updating the width.
              // (See https://github.com/SteveSanderson/knockout/issues/312, http://stackoverflow.com/questions/5908494/select-only-shows-first-char-of-selected-option)
              // Also fixes IE7 and IE8 bug that causes selects to be zero width if enclosed by 'if' or 'with'. (See issue #839)
              if (ieVersion) {
                  var originalWidth = selectElement.style.width;
                  selectElement.style.width = 0;
                  selectElement.style.width = originalWidth;
              }
          },
  
          range: function (min, max) {
              min = ko.utils.unwrapObservable(min);
              max = ko.utils.unwrapObservable(max);
              var result = [];
              for (var i = min; i <= max; i++)
                  result.push(i);
              return result;
          },
  
          makeArray: function(arrayLikeObject) {
              var result = [];
              for (var i = 0, j = arrayLikeObject.length; i < j; i++) {
                  result.push(arrayLikeObject[i]);
              };
              return result;
          },
  
          createSymbolOrString: function(identifier) {
              return canUseSymbols ? Symbol(identifier) : identifier;
          },
  
          isIe6 : isIe6,
          isIe7 : isIe7,
          ieVersion : ieVersion,
  
          getFormFields: function(form, fieldName) {
              var fields = ko.utils.makeArray(form.getElementsByTagName("input")).concat(ko.utils.makeArray(form.getElementsByTagName("textarea")));
              var isMatchingField = (typeof fieldName == 'string')
                  ? function(field) { return field.name === fieldName }
                  : function(field) { return fieldName.test(field.name) }; // Treat fieldName as regex or object containing predicate
              var matches = [];
              for (var i = fields.length - 1; i >= 0; i--) {
                  if (isMatchingField(fields[i]))
                      matches.push(fields[i]);
              };
              return matches;
          },
  
          parseJson: function (jsonString) {
              if (typeof jsonString == "string") {
                  jsonString = ko.utils.stringTrim(jsonString);
                  if (jsonString) {
                      if (JSON && JSON.parse) // Use native parsing where available
                          return JSON.parse(jsonString);
                      return (new Function("return " + jsonString))(); // Fallback on less safe parsing for older browsers
                  }
              }
              return null;
          },
  
          stringifyJson: function (data, replacer, space) {   // replacer and space are optional
              if (!JSON || !JSON.stringify)
                  throw new Error("Cannot find JSON.stringify(). Some browsers (e.g., IE < 8) don't support it natively, but you can overcome this by adding a script reference to json2.js, downloadable from http://www.json.org/json2.js");
              return JSON.stringify(ko.utils.unwrapObservable(data), replacer, space);
          },
  
          postJson: function (urlOrForm, data, options) {
              options = options || {};
              var params = options['params'] || {};
              var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost;
              var url = urlOrForm;
  
              // If we were given a form, use its 'action' URL and pick out any requested field values
              if((typeof urlOrForm == 'object') && (ko.utils.tagNameLower(urlOrForm) === "form")) {
                  var originalForm = urlOrForm;
                  url = originalForm.action;
                  for (var i = includeFields.length - 1; i >= 0; i--) {
                      var fields = ko.utils.getFormFields(originalForm, includeFields[i]);
                      for (var j = fields.length - 1; j >= 0; j--)
                          params[fields[j].name] = fields[j].value;
                  }
              }
  
              data = ko.utils.unwrapObservable(data);
              var form = document.createElement("form");
              form.style.display = "none";
              form.action = url;
              form.method = "post";
              for (var key in data) {
                  // Since 'data' this is a model object, we include all properties including those inherited from its prototype
                  var input = document.createElement("input");
                  input.type = "hidden";
                  input.name = key;
                  input.value = ko.utils.stringifyJson(ko.utils.unwrapObservable(data[key]));
                  form.appendChild(input);
              }
              objectForEach(params, function(key, value) {
                  var input = document.createElement("input");
                  input.type = "hidden";
                  input.name = key;
                  input.value = value;
                  form.appendChild(input);
              });
              document.body.appendChild(form);
              options['submitter'] ? options['submitter'](form) : form.submit();
              setTimeout(function () { form.parentNode.removeChild(form); }, 0);
          }
      }
  }());
  
  ko.exportSymbol('utils', ko.utils);
  ko.exportSymbol('utils.arrayForEach', ko.utils.arrayForEach);
  ko.exportSymbol('utils.arrayFirst', ko.utils.arrayFirst);
  ko.exportSymbol('utils.arrayFilter', ko.utils.arrayFilter);
  ko.exportSymbol('utils.arrayGetDistinctValues', ko.utils.arrayGetDistinctValues);
  ko.exportSymbol('utils.arrayIndexOf', ko.utils.arrayIndexOf);
  ko.exportSymbol('utils.arrayMap', ko.utils.arrayMap);
  ko.exportSymbol('utils.arrayPushAll', ko.utils.arrayPushAll);
  ko.exportSymbol('utils.arrayRemoveItem', ko.utils.arrayRemoveItem);
  ko.exportSymbol('utils.extend', ko.utils.extend);
  ko.exportSymbol('utils.fieldsIncludedWithJsonPost', ko.utils.fieldsIncludedWithJsonPost);
  ko.exportSymbol('utils.getFormFields', ko.utils.getFormFields);
  ko.exportSymbol('utils.peekObservable', ko.utils.peekObservable);
  ko.exportSymbol('utils.postJson', ko.utils.postJson);
  ko.exportSymbol('utils.parseJson', ko.utils.parseJson);
  ko.exportSymbol('utils.registerEventHandler', ko.utils.registerEventHandler);
  ko.exportSymbol('utils.stringifyJson', ko.utils.stringifyJson);
  ko.exportSymbol('utils.range', ko.utils.range);
  ko.exportSymbol('utils.toggleDomNodeCssClass', ko.utils.toggleDomNodeCssClass);
  ko.exportSymbol('utils.triggerEvent', ko.utils.triggerEvent);
  ko.exportSymbol('utils.unwrapObservable', ko.utils.unwrapObservable);
  ko.exportSymbol('utils.objectForEach', ko.utils.objectForEach);
  ko.exportSymbol('utils.addOrRemoveItem', ko.utils.addOrRemoveItem);
  ko.exportSymbol('utils.setTextContent', ko.utils.setTextContent);
  ko.exportSymbol('unwrap', ko.utils.unwrapObservable); // Convenient shorthand, because this is used so commonly
  
  if (!Function.prototype['bind']) {
      // Function.prototype.bind is a standard part of ECMAScript 5th Edition (December 2009, http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf)
      // In case the browser doesn't implement it natively, provide a JavaScript implementation. This implementation is based on the one in prototype.js
      Function.prototype['bind'] = function (object) {
          var originalFunction = this;
          if (arguments.length === 1) {
              return function () {
                  return originalFunction.apply(object, arguments);
              };
          } else {
              var partialArgs = Array.prototype.slice.call(arguments, 1);
              return function () {
                  var args = partialArgs.slice(0);
                  args.push.apply(args, arguments);
                  return originalFunction.apply(object, args);
              };
          }
      };
  }
  
  ko.utils.domData = new (function () {
      var uniqueId = 0;
      var dataStoreKeyExpandoPropertyName = "__ko__" + (new Date).getTime();
      var dataStore = {};
  
      function getAll(node, createIfNotFound) {
          var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
          var hasExistingDataStore = dataStoreKey && (dataStoreKey !== "null") && dataStore[dataStoreKey];
          if (!hasExistingDataStore) {
              if (!createIfNotFound)
                  return undefined;
              dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++;
              dataStore[dataStoreKey] = {};
          }
          return dataStore[dataStoreKey];
      }
  
      return {
          get: function (node, key) {
              var allDataForNode = getAll(node, false);
              return allDataForNode === undefined ? undefined : allDataForNode[key];
          },
          set: function (node, key, value) {
              if (value === undefined) {
                  // Make sure we don't actually create a new domData key if we are actually deleting a value
                  if (getAll(node, false) === undefined)
                      return;
              }
              var allDataForNode = getAll(node, true);
              allDataForNode[key] = value;
          },
          clear: function (node) {
              var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
              if (dataStoreKey) {
                  delete dataStore[dataStoreKey];
                  node[dataStoreKeyExpandoPropertyName] = null;
                  return true; // Exposing "did clean" flag purely so specs can infer whether things have been cleaned up as intended
              }
              return false;
          },
  
          nextKey: function () {
              return (uniqueId++) + dataStoreKeyExpandoPropertyName;
          }
      };
  })();
  
  ko.exportSymbol('utils.domData', ko.utils.domData);
  ko.exportSymbol('utils.domData.clear', ko.utils.domData.clear); // Exporting only so specs can clear up after themselves fully
  
  ko.utils.domNodeDisposal = new (function () {
      var domDataKey = ko.utils.domData.nextKey();
      var cleanableNodeTypes = { 1: true, 8: true, 9: true };       // Element, Comment, Document
      var cleanableNodeTypesWithDescendants = { 1: true, 9: true }; // Element, Document
  
      function getDisposeCallbacksCollection(node, createIfNotFound) {
          var allDisposeCallbacks = ko.utils.domData.get(node, domDataKey);
          if ((allDisposeCallbacks === undefined) && createIfNotFound) {
              allDisposeCallbacks = [];
              ko.utils.domData.set(node, domDataKey, allDisposeCallbacks);
          }
          return allDisposeCallbacks;
      }
      function destroyCallbacksCollection(node) {
          ko.utils.domData.set(node, domDataKey, undefined);
      }
  
      function cleanSingleNode(node) {
          // Run all the dispose callbacks
          var callbacks = getDisposeCallbacksCollection(node, false);
          if (callbacks) {
              callbacks = callbacks.slice(0); // Clone, as the array may be modified during iteration (typically, callbacks will remove themselves)
              for (var i = 0; i < callbacks.length; i++)
                  callbacks[i](node);
          }
  
          // Erase the DOM data
          ko.utils.domData.clear(node);
  
          // Perform cleanup needed by external libraries (currently only jQuery, but can be extended)
          ko.utils.domNodeDisposal["cleanExternalData"](node);
  
          // Clear any immediate-child comment nodes, as these wouldn't have been found by
          // node.getElementsByTagName("*") in cleanNode() (comment nodes aren't elements)
          if (cleanableNodeTypesWithDescendants[node.nodeType])
              cleanImmediateCommentTypeChildren(node);
      }
  
      function cleanImmediateCommentTypeChildren(nodeWithChildren) {
          var child, nextChild = nodeWithChildren.firstChild;
          while (child = nextChild) {
              nextChild = child.nextSibling;
              if (child.nodeType === 8)
                  cleanSingleNode(child);
          }
      }
  
      return {
          addDisposeCallback : function(node, callback) {
              if (typeof callback != "function")
                  throw new Error("Callback must be a function");
              getDisposeCallbacksCollection(node, true).push(callback);
          },
  
          removeDisposeCallback : function(node, callback) {
              var callbacksCollection = getDisposeCallbacksCollection(node, false);
              if (callbacksCollection) {
                  ko.utils.arrayRemoveItem(callbacksCollection, callback);
                  if (callbacksCollection.length == 0)
                      destroyCallbacksCollection(node);
              }
          },
  
          cleanNode : function(node) {
              // First clean this node, where applicable
              if (cleanableNodeTypes[node.nodeType]) {
                  cleanSingleNode(node);
  
                  // ... then its descendants, where applicable
                  if (cleanableNodeTypesWithDescendants[node.nodeType]) {
                      // Clone the descendants list in case it changes during iteration
                      var descendants = [];
                      ko.utils.arrayPushAll(descendants, node.getElementsByTagName("*"));
                      for (var i = 0, j = descendants.length; i < j; i++)
                          cleanSingleNode(descendants[i]);
                  }
              }
              return node;
          },
  
          removeNode : function(node) {
              ko.cleanNode(node);
              if (node.parentNode)
                  node.parentNode.removeChild(node);
          },
  
          "cleanExternalData" : function (node) {
              // Special support for jQuery here because it's so commonly used.
              // Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData
              // so notify it to tear down any resources associated with the node & descendants here.
              if (jQueryInstance && (typeof jQueryInstance['cleanData'] == "function"))
                  jQueryInstance['cleanData']([node]);
          }
      };
  })();
  ko.cleanNode = ko.utils.domNodeDisposal.cleanNode; // Shorthand name for convenience
  ko.removeNode = ko.utils.domNodeDisposal.removeNode; // Shorthand name for convenience
  ko.exportSymbol('cleanNode', ko.cleanNode);
  ko.exportSymbol('removeNode', ko.removeNode);
  ko.exportSymbol('utils.domNodeDisposal', ko.utils.domNodeDisposal);
  ko.exportSymbol('utils.domNodeDisposal.addDisposeCallback', ko.utils.domNodeDisposal.addDisposeCallback);
  ko.exportSymbol('utils.domNodeDisposal.removeDisposeCallback', ko.utils.domNodeDisposal.removeDisposeCallback);
  (function () {
      var none = [0, "", ""],
          table = [1, "<table>", "</table>"],
          tbody = [2, "<table><tbody>", "</tbody></table>"],
          tr = [3, "<table><tbody><tr>", "</tr></tbody></table>"],
          select = [1, "<select multiple='multiple'>", "</select>"],
          lookup = {
              'thead': table,
              'tbody': table,
              'tfoot': table,
              'tr': tbody,
              'td': tr,
              'th': tr,
              'option': select,
              'optgroup': select
          },
  
          // This is needed for old IE if you're *not* using either jQuery or innerShiv. Doesn't affect other cases.
          mayRequireCreateElementHack = ko.utils.ieVersion <= 8;
  
      function getWrap(tags) {
          var m = tags.match(/^<([a-z]+)[ >]/);
          return (m && lookup[m[1]]) || none;
      }
  
      function simpleHtmlParse(html, documentContext) {
          documentContext || (documentContext = document);
          var windowContext = documentContext['parentWindow'] || documentContext['defaultView'] || window;
  
          // Based on jQuery's "clean" function, but only accounting for table-related elements.
          // If you have referenced jQuery, this won't be used anyway - KO will use jQuery's "clean" function directly
  
          // Note that there's still an issue in IE < 9 whereby it will discard comment nodes that are the first child of
          // a descendant node. For example: "<div><!-- mycomment -->abc</div>" will get parsed as "<div>abc</div>"
          // This won't affect anyone who has referenced jQuery, and there's always the workaround of inserting a dummy node
          // (possibly a text node) in front of the comment. So, KO does not attempt to workaround this IE issue automatically at present.
  
          // Trim whitespace, otherwise indexOf won't work as expected
          var tags = ko.utils.stringTrim(html).toLowerCase(), div = documentContext.createElement("div"),
              wrap = getWrap(tags),
              depth = wrap[0];
  
          // Go to html and back, then peel off extra wrappers
          // Note that we always prefix with some dummy text, because otherwise, IE<9 will strip out leading comment nodes in descendants. Total madness.
          var markup = "ignored<div>" + wrap[1] + html + wrap[2] + "</div>";
          if (typeof windowContext['innerShiv'] == "function") {
              // Note that innerShiv is deprecated in favour of html5shiv. We should consider adding
              // support for html5shiv (except if no explicit support is needed, e.g., if html5shiv
              // somehow shims the native APIs so it just works anyway)
              div.appendChild(windowContext['innerShiv'](markup));
          } else {
              if (mayRequireCreateElementHack) {
                  // The document.createElement('my-element') trick to enable custom elements in IE6-8
                  // only works if we assign innerHTML on an element associated with that document.
                  documentContext.appendChild(div);
              }
  
              div.innerHTML = markup;
  
              if (mayRequireCreateElementHack) {
                  div.parentNode.removeChild(div);
              }
          }
  
          // Move to the right depth
          while (depth--)
              div = div.lastChild;
  
          return ko.utils.makeArray(div.lastChild.childNodes);
      }
  
      function jQueryHtmlParse(html, documentContext) {
          // jQuery's "parseHTML" function was introduced in jQuery 1.8.0 and is a documented public API.
          if (jQueryInstance['parseHTML']) {
              return jQueryInstance['parseHTML'](html, documentContext) || []; // Ensure we always return an array and never null
          } else {
              // For jQuery < 1.8.0, we fall back on the undocumented internal "clean" function.
              var elems = jQueryInstance['clean']([html], documentContext);
  
              // As of jQuery 1.7.1, jQuery parses the HTML by appending it to some dummy parent nodes held in an in-memory document fragment.
              // Unfortunately, it never clears the dummy parent nodes from the document fragment, so it leaks memory over time.
              // Fix this by finding the top-most dummy parent element, and detaching it from its owner fragment.
              if (elems && elems[0]) {
                  // Find the top-most parent element that's a direct child of a document fragment
                  var elem = elems[0];
                  while (elem.parentNode && elem.parentNode.nodeType !== 11 /* i.e., DocumentFragment */)
                      elem = elem.parentNode;
                  // ... then detach it
                  if (elem.parentNode)
                      elem.parentNode.removeChild(elem);
              }
  
              return elems;
          }
      }
  
      ko.utils.parseHtmlFragment = function(html, documentContext) {
          return jQueryInstance ?
              jQueryHtmlParse(html, documentContext) :   // As below, benefit from jQuery's optimisations where possible
              simpleHtmlParse(html, documentContext);  // ... otherwise, this simple logic will do in most common cases.
      };
  
      ko.utils.setHtml = function(node, html) {
          ko.utils.emptyDomNode(node);
  
          // There's no legitimate reason to display a stringified observable without unwrapping it, so we'll unwrap it
          html = ko.utils.unwrapObservable(html);
  
          if ((html !== null) && (html !== undefined)) {
              if (typeof html != 'string')
                  html = html.toString();
  
              // jQuery contains a lot of sophisticated code to parse arbitrary HTML fragments,
              // for example <tr> elements which are not normally allowed to exist on their own.
              // If you've referenced jQuery we'll use that rather than duplicating its code.
              if (jQueryInstance) {
                  jQueryInstance(node)['html'](html);
              } else {
                  // ... otherwise, use KO's own parsing logic.
                  var parsedNodes = ko.utils.parseHtmlFragment(html, node.ownerDocument);
                  for (var i = 0; i < parsedNodes.length; i++)
                      node.appendChild(parsedNodes[i]);
              }
          }
      };
  })();
  
  ko.exportSymbol('utils.parseHtmlFragment', ko.utils.parseHtmlFragment);
  ko.exportSymbol('utils.setHtml', ko.utils.setHtml);
  
  ko.memoization = (function () {
      var memos = {};
  
      function randomMax8HexChars() {
          return (((1 + Math.random()) * 0x100000000) | 0).toString(16).substring(1);
      }
      function generateRandomId() {
          return randomMax8HexChars() + randomMax8HexChars();
      }
      function findMemoNodes(rootNode, appendToArray) {
          if (!rootNode)
              return;
          if (rootNode.nodeType == 8) {
              var memoId = ko.memoization.parseMemoText(rootNode.nodeValue);
              if (memoId != null)
                  appendToArray.push({ domNode: rootNode, memoId: memoId });
          } else if (rootNode.nodeType == 1) {
              for (var i = 0, childNodes = rootNode.childNodes, j = childNodes.length; i < j; i++)
                  findMemoNodes(childNodes[i], appendToArray);
          }
      }
  
      return {
          memoize: function (callback) {
              if (typeof callback != "function")
                  throw new Error("You can only pass a function to ko.memoization.memoize()");
              var memoId = generateRandomId();
              memos[memoId] = callback;
              return "<!--[ko_memo:" + memoId + "]-->";
          },
  
          unmemoize: function (memoId, callbackParams) {
              var callback = memos[memoId];
              if (callback === undefined)
                  throw new Error("Couldn't find any memo with ID " + memoId + ". Perhaps it's already been unmemoized.");
              try {
                  callback.apply(null, callbackParams || []);
                  return true;
              }
              finally { delete memos[memoId]; }
          },
  
          unmemoizeDomNodeAndDescendants: function (domNode, extraCallbackParamsArray) {
              var memos = [];
              findMemoNodes(domNode, memos);
              for (var i = 0, j = memos.length; i < j; i++) {
                  var node = memos[i].domNode;
                  var combinedParams = [node];
                  if (extraCallbackParamsArray)
                      ko.utils.arrayPushAll(combinedParams, extraCallbackParamsArray);
                  ko.memoization.unmemoize(memos[i].memoId, combinedParams);
                  node.nodeValue = ""; // Neuter this node so we don't try to unmemoize it again
                  if (node.parentNode)
                      node.parentNode.removeChild(node); // If possible, erase it totally (not always possible - someone else might just hold a reference to it then call unmemoizeDomNodeAndDescendants again)
              }
          },
  
          parseMemoText: function (memoText) {
              var match = memoText.match(/^\[ko_memo\:(.*?)\]$/);
              return match ? match[1] : null;
          }
      };
  })();
  
  ko.exportSymbol('memoization', ko.memoization);
  ko.exportSymbol('memoization.memoize', ko.memoization.memoize);
  ko.exportSymbol('memoization.unmemoize', ko.memoization.unmemoize);
  ko.exportSymbol('memoization.parseMemoText', ko.memoization.parseMemoText);
  ko.exportSymbol('memoization.unmemoizeDomNodeAndDescendants', ko.memoization.unmemoizeDomNodeAndDescendants);
  ko.tasks = (function () {
      var scheduler,
          taskQueue = [],
          taskQueueLength = 0,
          nextHandle = 1,
          nextIndexToProcess = 0;
  
      if (window['MutationObserver']) {
          // Chrome 27+, Firefox 14+, IE 11+, Opera 15+, Safari 6.1+
          // From https://github.com/petkaantonov/bluebird * Copyright (c) 2014 Petka Antonov * License: MIT
          scheduler = (function (callback) {
              var div = document.createElement("div");
              new MutationObserver(callback).observe(div, {attributes: true});
              return function () { div.classList.toggle("foo"); };
          })(scheduledProcess);
      } else if (document && "onreadystatechange" in document.createElement("script")) {
          // IE 6-10
          // From https://github.com/YuzuJS/setImmediate * Copyright (c) 2012 Barnesandnoble.com, llc, Donavon West, and Domenic Denicola * License: MIT
          scheduler = function (callback) {
              var script = document.createElement("script");
              script.onreadystatechange = function () {
                  script.onreadystatechange = null;
                  document.documentElement.removeChild(script);
                  script = null;
                  callback();
              };
              document.documentElement.appendChild(script);
          };
      } else {
          scheduler = function (callback) {
              setTimeout(callback, 0);
          };
      }
  
      function processTasks() {
          if (taskQueueLength) {
              // Each mark represents the end of a logical group of tasks and the number of these groups is
              // limited to prevent unchecked recursion.
              var mark = taskQueueLength, countMarks = 0;
  
              // nextIndexToProcess keeps track of where we are in the queue; processTasks can be called recursively without issue
              for (var task; nextIndexToProcess < taskQueueLength; ) {
                  if (task = taskQueue[nextIndexToProcess++]) {
                      if (nextIndexToProcess > mark) {
                          if (++countMarks >= 5000) {
                              nextIndexToProcess = taskQueueLength;   // skip all tasks remaining in the queue since any of them could be causing the recursion
                              ko.utils.deferError(Error("'Too much recursion' after processing " + countMarks + " task groups."));
                              break;
                          }
                          mark = taskQueueLength;
                      }
                      try {
                          task();
                      } catch (ex) {
                          ko.utils.deferError(ex);
                      }
                  }
              }
          }
      }
  
      function scheduledProcess() {
          processTasks();
  
          // Reset the queue
          nextIndexToProcess = taskQueueLength = taskQueue.length = 0;
      }
  
      function scheduleTaskProcessing() {
          ko.tasks['scheduler'](scheduledProcess);
      }
  
      var tasks = {
          'scheduler': scheduler,     // Allow overriding the scheduler
  
          schedule: function (func) {
              if (!taskQueueLength) {
                  scheduleTaskProcessing();
              }
  
              taskQueue[taskQueueLength++] = func;
              return nextHandle++;
          },
  
          cancel: function (handle) {
              var index = handle - (nextHandle - taskQueueLength);
              if (index >= nextIndexToProcess && index < taskQueueLength) {
                  taskQueue[index] = null;
              }
          },
  
          // For testing only: reset the queue and return the previous queue length
          'resetForTesting': function () {
              var length = taskQueueLength - nextIndexToProcess;
              nextIndexToProcess = taskQueueLength = taskQueue.length = 0;
              return length;
          },
  
          runEarly: processTasks
      };
  
      return tasks;
  })();
  
  ko.exportSymbol('tasks', ko.tasks);
  ko.exportSymbol('tasks.schedule', ko.tasks.schedule);
  //ko.exportSymbol('tasks.cancel', ko.tasks.cancel);  "cancel" isn't minified
  ko.exportSymbol('tasks.runEarly', ko.tasks.runEarly);
  ko.extenders = {
      'throttle': function(target, timeout) {
          // Throttling means two things:
  
          // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies
          //     notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate
          target['throttleEvaluation'] = timeout;
  
          // (2) For writable targets (observables, or writable dependent observables), we throttle *writes*
          //     so the target cannot change value synchronously or faster than a certain rate
          var writeTimeoutInstance = null;
          return ko.dependentObservable({
              'read': target,
              'write': function(value) {
                  clearTimeout(writeTimeoutInstance);
                  writeTimeoutInstance = ko.utils.setTimeout(function() {
                      target(value);
                  }, timeout);
              }
          });
      },
  
      'rateLimit': function(target, options) {
          var timeout, method, limitFunction;
  
          if (typeof options == 'number') {
              timeout = options;
          } else {
              timeout = options['timeout'];
              method = options['method'];
          }
  
          // rateLimit supersedes deferred updates
          target._deferUpdates = false;
  
          limitFunction = method == 'notifyWhenChangesStop' ?  debounce : throttle;
          target.limit(function(callback) {
              return limitFunction(callback, timeout);
          });
      },
  
      'deferred': function(target, options) {
          if (options !== true) {
              throw new Error('The \'deferred\' extender only accepts the value \'true\', because it is not supported to turn deferral off once enabled.')
          }
  
          if (!target._deferUpdates) {
              target._deferUpdates = true;
              target.limit(function (callback) {
                  var handle,
                      ignoreUpdates = false;
                  return function () {
                      if (!ignoreUpdates) {
                          ko.tasks.cancel(handle);
                          handle = ko.tasks.schedule(callback);
  
                          try {
                              ignoreUpdates = true;
                              target['notifySubscribers'](undefined, 'dirty');
                          } finally {
                              ignoreUpdates = false;
                          }
                      }
                  };
              });
          }
      },
  
      'notify': function(target, notifyWhen) {
          target["equalityComparer"] = notifyWhen == "always" ?
              null :  // null equalityComparer means to always notify
              valuesArePrimitiveAndEqual;
      }
  };
  
  var primitiveTypes = { 'undefined':1, 'boolean':1, 'number':1, 'string':1 };
  function valuesArePrimitiveAndEqual(a, b) {
      var oldValueIsPrimitive = (a === null) || (typeof(a) in primitiveTypes);
      return oldValueIsPrimitive ? (a === b) : false;
  }
  
  function throttle(callback, timeout) {
      var timeoutInstance;
      return function () {
          if (!timeoutInstance) {
              timeoutInstance = ko.utils.setTimeout(function () {
                  timeoutInstance = undefined;
                  callback();
              }, timeout);
          }
      };
  }
  
  function debounce(callback, timeout) {
      var timeoutInstance;
      return function () {
          clearTimeout(timeoutInstance);
          timeoutInstance = ko.utils.setTimeout(callback, timeout);
      };
  }
  
  function applyExtenders(requestedExtenders) {
      var target = this;
      if (requestedExtenders) {
          ko.utils.objectForEach(requestedExtenders, function(key, value) {
              var extenderHandler = ko.extenders[key];
              if (typeof extenderHandler == 'function') {
                  target = extenderHandler(target, value) || target;
              }
          });
      }
      return target;
  }
  
  ko.exportSymbol('extenders', ko.extenders);
  
  ko.subscription = function (target, callback, disposeCallback) {
      this._target = target;
      this.callback = callback;
      this.disposeCallback = disposeCallback;
      this.isDisposed = false;
      ko.exportProperty(this, 'dispose', this.dispose);
  };
  ko.subscription.prototype.dispose = function () {
      this.isDisposed = true;
      this.disposeCallback();
  };
  
  ko.subscribable = function () {
      ko.utils.setPrototypeOfOrExtend(this, ko_subscribable_fn);
      ko_subscribable_fn.init(this);
  }
  
  var defaultEvent = "change";
  
  // Moved out of "limit" to avoid the extra closure
  function limitNotifySubscribers(value, event) {
      if (!event || event === defaultEvent) {
          this._limitChange(value);
      } else if (event === 'beforeChange') {
          this._limitBeforeChange(value);
      } else {
          this._origNotifySubscribers(value, event);
      }
  }
  
  var ko_subscribable_fn = {
      init: function(instance) {
          instance._subscriptions = { "change": [] };
          instance._versionNumber = 1;
      },
  
      subscribe: function (callback, callbackTarget, event) {
          var self = this;
  
          event = event || defaultEvent;
          var boundCallback = callbackTarget ? callback.bind(callbackTarget) : callback;
  
          var subscription = new ko.subscription(self, boundCallback, function () {
              ko.utils.arrayRemoveItem(self._subscriptions[event], subscription);
              if (self.afterSubscriptionRemove)
                  self.afterSubscriptionRemove(event);
          });
  
          if (self.beforeSubscriptionAdd)
              self.beforeSubscriptionAdd(event);
  
          if (!self._subscriptions[event])
              self._subscriptions[event] = [];
          self._subscriptions[event].push(subscription);
  
          return subscription;
      },
  
      "notifySubscribers": function (valueToNotify, event) {
          event = event || defaultEvent;
          if (event === defaultEvent) {
              this.updateVersion();
          }
          if (this.hasSubscriptionsForEvent(event)) {
              var subs = event === defaultEvent && this._changeSubscriptions || this._subscriptions[event].slice(0);
              try {
                  ko.dependencyDetection.begin(); // Begin suppressing dependency detection (by setting the top frame to undefined)
                  for (var i = 0, subscription; subscription = subs[i]; ++i) {
                      // In case a subscription was disposed during the arrayForEach cycle, check
                      // for isDisposed on each subscription before invoking its callback
                      if (!subscription.isDisposed)
                          subscription.callback(valueToNotify);
                  }
              } finally {
                  ko.dependencyDetection.end(); // End suppressing dependency detection
              }
          }
      },
  
      getVersion: function () {
          return this._versionNumber;
      },
  
      hasChanged: function (versionToCheck) {
          return this.getVersion() !== versionToCheck;
      },
  
      updateVersion: function () {
          ++this._versionNumber;
      },
  
      limit: function(limitFunction) {
          var self = this, selfIsObservable = ko.isObservable(self),
              ignoreBeforeChange, notifyNextChange, previousValue, pendingValue, beforeChange = 'beforeChange';
  
          if (!self._origNotifySubscribers) {
              self._origNotifySubscribers = self["notifySubscribers"];
              self["notifySubscribers"] = limitNotifySubscribers;
          }
  
          var finish = limitFunction(function() {
              self._notificationIsPending = false;
  
              // If an observable provided a reference to itself, access it to get the latest value.
              // This allows computed observables to delay calculating their value until needed.
              if (selfIsObservable && pendingValue === self) {
                  pendingValue = self._evalIfChanged ? self._evalIfChanged() : self();
              }
              var shouldNotify = notifyNextChange || self.isDifferent(previousValue, pendingValue);
  
              notifyNextChange = ignoreBeforeChange = false;
  
              if (shouldNotify) {
                  self._origNotifySubscribers(previousValue = pendingValue);
              }
          });
  
          self._limitChange = function(value) {
              self._changeSubscriptions = self._subscriptions[defaultEvent].slice(0);
              self._notificationIsPending = ignoreBeforeChange = true;
              pendingValue = value;
              finish();
          };
          self._limitBeforeChange = function(value) {
              if (!ignoreBeforeChange) {
                  previousValue = value;
                  self._origNotifySubscribers(value, beforeChange);
              }
          };
          self._notifyNextChangeIfValueIsDifferent = function() {
              if (self.isDifferent(previousValue, self.peek(true /*evaluate*/))) {
                  notifyNextChange = true;
              }
          };
      },
  
      hasSubscriptionsForEvent: function(event) {
          return this._subscriptions[event] && this._subscriptions[event].length;
      },
  
      getSubscriptionsCount: function (event) {
          if (event) {
              return this._subscriptions[event] && this._subscriptions[event].length || 0;
          } else {
              var total = 0;
              ko.utils.objectForEach(this._subscriptions, function(eventName, subscriptions) {
                  if (eventName !== 'dirty')
                      total += subscriptions.length;
              });
              return total;
          }
      },
  
      isDifferent: function(oldValue, newValue) {
          return !this['equalityComparer'] || !this['equalityComparer'](oldValue, newValue);
      },
  
      extend: applyExtenders
  };
  
  ko.exportProperty(ko_subscribable_fn, 'subscribe', ko_subscribable_fn.subscribe);
  ko.exportProperty(ko_subscribable_fn, 'extend', ko_subscribable_fn.extend);
  ko.exportProperty(ko_subscribable_fn, 'getSubscriptionsCount', ko_subscribable_fn.getSubscriptionsCount);
  
  // For browsers that support proto assignment, we overwrite the prototype of each
  // observable instance. Since observables are functions, we need Function.prototype
  // to still be in the prototype chain.
  if (ko.utils.canSetPrototype) {
      ko.utils.setPrototypeOf(ko_subscribable_fn, Function.prototype);
  }
  
  ko.subscribable['fn'] = ko_subscribable_fn;
  
  
  ko.isSubscribable = function (instance) {
      return instance != null && typeof instance.subscribe == "function" && typeof instance["notifySubscribers"] == "function";
  };
  
  ko.exportSymbol('subscribable', ko.subscribable);
  ko.exportSymbol('isSubscribable', ko.isSubscribable);
  
  ko.computedContext = ko.dependencyDetection = (function () {
      var outerFrames = [],
          currentFrame,
          lastId = 0;
  
      // Return a unique ID that can be assigned to an observable for dependency tracking.
      // Theoretically, you could eventually overflow the number storage size, resulting
      // in duplicate IDs. But in JavaScript, the largest exact integral value is 2^53
      // or 9,007,199,254,740,992. If you created 1,000,000 IDs per second, it would
      // take over 285 years to reach that number.
      // Reference http://blog.vjeux.com/2010/javascript/javascript-max_int-number-limits.html
      function getId() {
          return ++lastId;
      }
  
      function begin(options) {
          outerFrames.push(currentFrame);
          currentFrame = options;
      }
  
      function end() {
          currentFrame = outerFrames.pop();
      }
  
      return {
          begin: begin,
  
          end: end,
  
          registerDependency: function (subscribable) {
              if (currentFrame) {
                  if (!ko.isSubscribable(subscribable))
                      throw new Error("Only subscribable things can act as dependencies");
                  currentFrame.callback.call(currentFrame.callbackTarget, subscribable, subscribable._id || (subscribable._id = getId()));
              }
          },
  
          ignore: function (callback, callbackTarget, callbackArgs) {
              try {
                  begin();
                  return callback.apply(callbackTarget, callbackArgs || []);
              } finally {
                  end();
              }
          },
  
          getDependenciesCount: function () {
              if (currentFrame)
                  return currentFrame.computed.getDependenciesCount();
          },
  
          isInitial: function() {
              if (currentFrame)
                  return currentFrame.isInitial;
          }
      };
  })();
  
  ko.exportSymbol('computedContext', ko.computedContext);
  ko.exportSymbol('computedContext.getDependenciesCount', ko.computedContext.getDependenciesCount);
  ko.exportSymbol('computedContext.isInitial', ko.computedContext.isInitial);
  
  ko.exportSymbol('ignoreDependencies', ko.ignoreDependencies = ko.dependencyDetection.ignore);
  var observableLatestValue = ko.utils.createSymbolOrString('_latestValue');
  
  ko.observable = function (initialValue) {
      function observable() {
          if (arguments.length > 0) {
              // Write
  
              // Ignore writes if the value hasn't changed
              if (observable.isDifferent(observable[observableLatestValue], arguments[0])) {
                  observable.valueWillMutate();
                  observable[observableLatestValue] = arguments[0];
                  observable.valueHasMutated();
              }
              return this; // Permits chained assignments
          }
          else {
              // Read
              ko.dependencyDetection.registerDependency(observable); // The caller only needs to be notified of changes if they did a "read" operation
              return observable[observableLatestValue];
          }
      }
  
      observable[observableLatestValue] = initialValue;
  
      // Inherit from 'subscribable'
      if (!ko.utils.canSetPrototype) {
          // 'subscribable' won't be on the prototype chain unless we put it there directly
          ko.utils.extend(observable, ko.subscribable['fn']);
      }
      ko.subscribable['fn'].init(observable);
  
      // Inherit from 'observable'
      ko.utils.setPrototypeOfOrExtend(observable, observableFn);
  
      if (ko.options['deferUpdates']) {
          ko.extenders['deferred'](observable, true);
      }
  
      return observable;
  }
  
  // Define prototype for observables
  var observableFn = {
      'equalityComparer': valuesArePrimitiveAndEqual,
      peek: function() { return this[observableLatestValue]; },
      valueHasMutated: function () { this['notifySubscribers'](this[observableLatestValue]); },
      valueWillMutate: function () { this['notifySubscribers'](this[observableLatestValue], 'beforeChange'); }
  };
  
  // Note that for browsers that don't support proto assignment, the
  // inheritance chain is created manually in the ko.observable constructor
  if (ko.utils.canSetPrototype) {
      ko.utils.setPrototypeOf(observableFn, ko.subscribable['fn']);
  }
  
  var protoProperty = ko.observable.protoProperty = '__ko_proto__';
  observableFn[protoProperty] = ko.observable;
  
  ko.hasPrototype = function(instance, prototype) {
      if ((instance === null) || (instance === undefined) || (instance[protoProperty] === undefined)) return false;
      if (instance[protoProperty] === prototype) return true;
      return ko.hasPrototype(instance[protoProperty], prototype); // Walk the prototype chain
  };
  
  ko.isObservable = function (instance) {
      return ko.hasPrototype(instance, ko.observable);
  }
  ko.isWriteableObservable = function (instance) {
      // Observable
      if ((typeof instance == 'function') && instance[protoProperty] === ko.observable)
          return true;
      // Writeable dependent observable
      if ((typeof instance == 'function') && (instance[protoProperty] === ko.dependentObservable) && (instance.hasWriteFunction))
          return true;
      // Anything else
      return false;
  }
  
  ko.exportSymbol('observable', ko.observable);
  ko.exportSymbol('isObservable', ko.isObservable);
  ko.exportSymbol('isWriteableObservable', ko.isWriteableObservable);
  ko.exportSymbol('isWritableObservable', ko.isWriteableObservable);
  ko.exportSymbol('observable.fn', observableFn);
  ko.exportProperty(observableFn, 'peek', observableFn.peek);
  ko.exportProperty(observableFn, 'valueHasMutated', observableFn.valueHasMutated);
  ko.exportProperty(observableFn, 'valueWillMutate', observableFn.valueWillMutate);
  ko.observableArray = function (initialValues) {
      initialValues = initialValues || [];
  
      if (typeof initialValues != 'object' || !('length' in initialValues))
          throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined.");
  
      var result = ko.observable(initialValues);
      ko.utils.setPrototypeOfOrExtend(result, ko.observableArray['fn']);
      return result.extend({'trackArrayChanges':true});
  };
  
  ko.observableArray['fn'] = {
      'remove': function (valueOrPredicate) {
          var underlyingArray = this.peek();
          var removedValues = [];
          var predicate = typeof valueOrPredicate == "function" && !ko.isObservable(valueOrPredicate) ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
          for (var i = 0; i < underlyingArray.length; i++) {
              var value = underlyingArray[i];
              if (predicate(value)) {
                  if (removedValues.length === 0) {
                      this.valueWillMutate();
                  }
                  removedValues.push(value);
                  underlyingArray.splice(i, 1);
                  i--;
              }
          }
          if (removedValues.length) {
              this.valueHasMutated();
          }
          return removedValues;
      },
  
      'removeAll': function (arrayOfValues) {
          // If you passed zero args, we remove everything
          if (arrayOfValues === undefined) {
              var underlyingArray = this.peek();
              var allValues = underlyingArray.slice(0);
              this.valueWillMutate();
              underlyingArray.splice(0, underlyingArray.length);
              this.valueHasMutated();
              return allValues;
          }
          // If you passed an arg, we interpret it as an array of entries to remove
          if (!arrayOfValues)
              return [];
          return this['remove'](function (value) {
              return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
          });
      },
  
      'destroy': function (valueOrPredicate) {
          var underlyingArray = this.peek();
          var predicate = typeof valueOrPredicate == "function" && !ko.isObservable(valueOrPredicate) ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
          this.valueWillMutate();
          for (var i = underlyingArray.length - 1; i >= 0; i--) {
              var value = underlyingArray[i];
              if (predicate(value))
                  underlyingArray[i]["_destroy"] = true;
          }
          this.valueHasMutated();
      },
  
      'destroyAll': function (arrayOfValues) {
          // If you passed zero args, we destroy everything
          if (arrayOfValues === undefined)
              return this['destroy'](function() { return true });
  
          // If you passed an arg, we interpret it as an array of entries to destroy
          if (!arrayOfValues)
              return [];
          return this['destroy'](function (value) {
              return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
          });
      },
  
      'indexOf': function (item) {
          var underlyingArray = this();
          return ko.utils.arrayIndexOf(underlyingArray, item);
      },
  
      'replace': function(oldItem, newItem) {
          var index = this['indexOf'](oldItem);
          if (index >= 0) {
              this.valueWillMutate();
              this.peek()[index] = newItem;
              this.valueHasMutated();
          }
      }
  };
  
  // Note that for browsers that don't support proto assignment, the
  // inheritance chain is created manually in the ko.observableArray constructor
  if (ko.utils.canSetPrototype) {
      ko.utils.setPrototypeOf(ko.observableArray['fn'], ko.observable['fn']);
  }
  
  // Populate ko.observableArray.fn with read/write functions from native arrays
  // Important: Do not add any additional functions here that may reasonably be used to *read* data from the array
  // because we'll eval them without causing subscriptions, so ko.computed output could end up getting stale
  ko.utils.arrayForEach(["pop", "push", "reverse", "shift", "sort", "splice", "unshift"], function (methodName) {
      ko.observableArray['fn'][methodName] = function () {
          // Use "peek" to avoid creating a subscription in any computed that we're executing in the context of
          // (for consistency with mutating regular observables)
          var underlyingArray = this.peek();
          this.valueWillMutate();
          this.cacheDiffForKnownOperation(underlyingArray, methodName, arguments);
          var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);
          this.valueHasMutated();
          // The native sort and reverse methods return a reference to the array, but it makes more sense to return the observable array instead.
          return methodCallResult === underlyingArray ? this : methodCallResult;
      };
  });
  
  // Populate ko.observableArray.fn with read-only functions from native arrays
  ko.utils.arrayForEach(["slice"], function (methodName) {
      ko.observableArray['fn'][methodName] = function () {
          var underlyingArray = this();
          return underlyingArray[methodName].apply(underlyingArray, arguments);
      };
  });
  
  ko.exportSymbol('observableArray', ko.observableArray);
  var arrayChangeEventName = 'arrayChange';
  ko.extenders['trackArrayChanges'] = function(target, options) {
      // Use the provided options--each call to trackArrayChanges overwrites the previously set options
      target.compareArrayOptions = {};
      if (options && typeof options == "object") {
          ko.utils.extend(target.compareArrayOptions, options);
      }
      target.compareArrayOptions['sparse'] = true;
  
      // Only modify the target observable once
      if (target.cacheDiffForKnownOperation) {
          return;
      }
      var trackingChanges = false,
          cachedDiff = null,
          arrayChangeSubscription,
          pendingNotifications = 0,
          underlyingNotifySubscribersFunction,
          underlyingBeforeSubscriptionAddFunction = target.beforeSubscriptionAdd,
          underlyingAfterSubscriptionRemoveFunction = target.afterSubscriptionRemove;
  
      // Watch "subscribe" calls, and for array change events, ensure change tracking is enabled
      target.beforeSubscriptionAdd = function (event) {
          if (underlyingBeforeSubscriptionAddFunction)
              underlyingBeforeSubscriptionAddFunction.call(target, event);
          if (event === arrayChangeEventName) {
              trackChanges();
          }
      };
      // Watch "dispose" calls, and for array change events, ensure change tracking is disabled when all are disposed
      target.afterSubscriptionRemove = function (event) {
          if (underlyingAfterSubscriptionRemoveFunction)
              underlyingAfterSubscriptionRemoveFunction.call(target, event);
          if (event === arrayChangeEventName && !target.hasSubscriptionsForEvent(arrayChangeEventName)) {
              if (underlyingNotifySubscribersFunction) {
                  target['notifySubscribers'] = underlyingNotifySubscribersFunction;
                  underlyingNotifySubscribersFunction = undefined;
              }
              arrayChangeSubscription.dispose();
              trackingChanges = false;
          }
      };
  
      function trackChanges() {
          // Calling 'trackChanges' multiple times is the same as calling it once
          if (trackingChanges) {
              return;
          }
  
          trackingChanges = true;
  
          // Intercept "notifySubscribers" to track how many times it was called.
          underlyingNotifySubscribersFunction = target['notifySubscribers'];
          target['notifySubscribers'] = function(valueToNotify, event) {
              if (!event || event === defaultEvent) {
                  ++pendingNotifications;
              }
              return underlyingNotifySubscribersFunction.apply(this, arguments);
          };
  
          // Each time the array changes value, capture a clone so that on the next
          // change it's possible to produce a diff
          var previousContents = [].concat(target.peek() || []);
          cachedDiff = null;
          arrayChangeSubscription = target.subscribe(function(currentContents) {
              // Make a copy of the current contents and ensure it's an array
              currentContents = [].concat(currentContents || []);
  
              // Compute the diff and issue notifications, but only if someone is listening
              if (target.hasSubscriptionsForEvent(arrayChangeEventName)) {
                  var changes = getChanges(previousContents, currentContents);
              }
  
              // Eliminate references to the old, removed items, so they can be GCed
              previousContents = currentContents;
              cachedDiff = null;
              pendingNotifications = 0;
  
              if (changes && changes.length) {
                  target['notifySubscribers'](changes, arrayChangeEventName);
              }
          });
      }
  
      function getChanges(previousContents, currentContents) {
          // We try to re-use cached diffs.
          // The scenarios where pendingNotifications > 1 are when using rate-limiting or the Deferred Updates
          // plugin, which without this check would not be compatible with arrayChange notifications. Normally,
          // notifications are issued immediately so we wouldn't be queueing up more than one.
          if (!cachedDiff || pendingNotifications > 1) {
              cachedDiff = ko.utils.compareArrays(previousContents, currentContents, target.compareArrayOptions);
          }
  
          return cachedDiff;
      }
  
      target.cacheDiffForKnownOperation = function(rawArray, operationName, args) {
          // Only run if we're currently tracking changes for this observable array
          // and there aren't any pending deferred notifications.
          if (!trackingChanges || pendingNotifications) {
              return;
          }
          var diff = [],
              arrayLength = rawArray.length,
              argsLength = args.length,
              offset = 0;
  
          function pushDiff(status, value, index) {
              return diff[diff.length] = { 'status': status, 'value': value, 'index': index };
          }
          switch (operationName) {
              case 'push':
                  offset = arrayLength;
              case 'unshift':
                  for (var index = 0; index < argsLength; index++) {
                      pushDiff('added', args[index], offset + index);
                  }
                  break;
  
              case 'pop':
                  offset = arrayLength - 1;
              case 'shift':
                  if (arrayLength) {
                      pushDiff('deleted', rawArray[offset], offset);
                  }
                  break;
  
              case 'splice':
                  // Negative start index means 'from end of array'. After that we clamp to [0...arrayLength].
                  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
                  var startIndex = Math.min(Math.max(0, args[0] < 0 ? arrayLength + args[0] : args[0]), arrayLength),
                      endDeleteIndex = argsLength === 1 ? arrayLength : Math.min(startIndex + (args[1] || 0), arrayLength),
                      endAddIndex = startIndex + argsLength - 2,
                      endIndex = Math.max(endDeleteIndex, endAddIndex),
                      additions = [], deletions = [];
                  for (var index = startIndex, argsIndex = 2; index < endIndex; ++index, ++argsIndex) {
                      if (index < endDeleteIndex)
                          deletions.push(pushDiff('deleted', rawArray[index], index));
                      if (index < endAddIndex)
                          additions.push(pushDiff('added', args[argsIndex], index));
                  }
                  ko.utils.findMovesInArrayComparison(deletions, additions);
                  break;
  
              default:
                  return;
          }
          cachedDiff = diff;
      };
  };
  var computedState = ko.utils.createSymbolOrString('_state');
  
  ko.computed = ko.dependentObservable = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {
      if (typeof evaluatorFunctionOrOptions === "object") {
          // Single-parameter syntax - everything is on this "options" param
          options = evaluatorFunctionOrOptions;
      } else {
          // Multi-parameter syntax - construct the options according to the params passed
          options = options || {};
          if (evaluatorFunctionOrOptions) {
              options["read"] = evaluatorFunctionOrOptions;
          }
      }
      if (typeof options["read"] != "function")
          throw Error("Pass a function that returns the value of the ko.computed");
  
      var writeFunction = options["write"];
      var state = {
          latestValue: undefined,
          isStale: true,
          isDirty: true,
          isBeingEvaluated: false,
          suppressDisposalUntilDisposeWhenReturnsFalse: false,
          isDisposed: false,
          pure: false,
          isSleeping: false,
          readFunction: options["read"],
          evaluatorFunctionTarget: evaluatorFunctionTarget || options["owner"],
          disposeWhenNodeIsRemoved: options["disposeWhenNodeIsRemoved"] || options.disposeWhenNodeIsRemoved || null,
          disposeWhen: options["disposeWhen"] || options.disposeWhen,
          domNodeDisposalCallback: null,
          dependencyTracking: {},
          dependenciesCount: 0,
          evaluationTimeoutInstance: null
      };
  
      function computedObservable() {
          if (arguments.length > 0) {
              if (typeof writeFunction === "function") {
                  // Writing a value
                  writeFunction.apply(state.evaluatorFunctionTarget, arguments);
              } else {
                  throw new Error("Cannot write a value to a ko.computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.");
              }
              return this; // Permits chained assignments
          } else {
              // Reading the value
              ko.dependencyDetection.registerDependency(computedObservable);
              if (state.isDirty || (state.isSleeping && computedObservable.haveDependenciesChanged())) {
                  computedObservable.evaluateImmediate();
              }
              return state.latestValue;
          }
      }
  
      computedObservable[computedState] = state;
      computedObservable.hasWriteFunction = typeof writeFunction === "function";
  
      // Inherit from 'subscribable'
      if (!ko.utils.canSetPrototype) {
          // 'subscribable' won't be on the prototype chain unless we put it there directly
          ko.utils.extend(computedObservable, ko.subscribable['fn']);
      }
      ko.subscribable['fn'].init(computedObservable);
  
      // Inherit from 'computed'
      ko.utils.setPrototypeOfOrExtend(computedObservable, computedFn);
  
      if (options['pure']) {
          state.pure = true;
          state.isSleeping = true;     // Starts off sleeping; will awake on the first subscription
          ko.utils.extend(computedObservable, pureComputedOverrides);
      } else if (options['deferEvaluation']) {
          ko.utils.extend(computedObservable, deferEvaluationOverrides);
      }
  
      if (ko.options['deferUpdates']) {
          ko.extenders['deferred'](computedObservable, true);
      }
  
      if (DEBUG) {
          // #1731 - Aid debugging by exposing the computed's options
          computedObservable["_options"] = options;
      }
  
      if (state.disposeWhenNodeIsRemoved) {
          // Since this computed is associated with a DOM node, and we don't want to dispose the computed
          // until the DOM node is *removed* from the document (as opposed to never having been in the document),
          // we'll prevent disposal until "disposeWhen" first returns false.
          state.suppressDisposalUntilDisposeWhenReturnsFalse = true;
  
          // disposeWhenNodeIsRemoved: true can be used to opt into the "only dispose after first false result"
          // behaviour even if there's no specific node to watch. In that case, clear the option so we don't try
          // to watch for a non-node's disposal. This technique is intended for KO's internal use only and shouldn't
          // be documented or used by application code, as it's likely to change in a future version of KO.
          if (!state.disposeWhenNodeIsRemoved.nodeType) {
              state.disposeWhenNodeIsRemoved = null;
          }
      }
  
      // Evaluate, unless sleeping or deferEvaluation is true
      if (!state.isSleeping && !options['deferEvaluation']) {
          computedObservable.evaluateImmediate();
      }
  
      // Attach a DOM node disposal callback so that the computed will be proactively disposed as soon as the node is
      // removed using ko.removeNode. But skip if isActive is false (there will never be any dependencies to dispose).
      if (state.disposeWhenNodeIsRemoved && computedObservable.isActive()) {
          ko.utils.domNodeDisposal.addDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback = function () {
              computedObservable.dispose();
          });
      }
  
      return computedObservable;
  };
  
  // Utility function that disposes a given dependencyTracking entry
  function computedDisposeDependencyCallback(id, entryToDispose) {
      if (entryToDispose !== null && entryToDispose.dispose) {
          entryToDispose.dispose();
      }
  }
  
  // This function gets called each time a dependency is detected while evaluating a computed.
  // It's factored out as a shared function to avoid creating unnecessary function instances during evaluation.
  function computedBeginDependencyDetectionCallback(subscribable, id) {
      var computedObservable = this.computedObservable,
          state = computedObservable[computedState];
      if (!state.isDisposed) {
          if (this.disposalCount && this.disposalCandidates[id]) {
              // Don't want to dispose this subscription, as it's still being used
              computedObservable.addDependencyTracking(id, subscribable, this.disposalCandidates[id]);
              this.disposalCandidates[id] = null; // No need to actually delete the property - disposalCandidates is a transient object anyway
              --this.disposalCount;
          } else if (!state.dependencyTracking[id]) {
              // Brand new subscription - add it
              computedObservable.addDependencyTracking(id, subscribable, state.isSleeping ? { _target: subscribable } : computedObservable.subscribeToDependency(subscribable));
          }
          // If the observable we've accessed has a pending notification, ensure we get notified of the actual final value (bypass equality checks)
          if (subscribable._notificationIsPending) {
              subscribable._notifyNextChangeIfValueIsDifferent();
          }
      }
  }
  
  var computedFn = {
      "equalityComparer": valuesArePrimitiveAndEqual,
      getDependenciesCount: function () {
          return this[computedState].dependenciesCount;
      },
      addDependencyTracking: function (id, target, trackingObj) {
          if (this[computedState].pure && target === this) {
              throw Error("A 'pure' computed must not be called recursively");
          }
  
          this[computedState].dependencyTracking[id] = trackingObj;
          trackingObj._order = this[computedState].dependenciesCount++;
          trackingObj._version = target.getVersion();
      },
      haveDependenciesChanged: function () {
          var id, dependency, dependencyTracking = this[computedState].dependencyTracking;
          for (id in dependencyTracking) {
              if (dependencyTracking.hasOwnProperty(id)) {
                  dependency = dependencyTracking[id];
                  if ((this._evalDelayed && dependency._target._notificationIsPending) || dependency._target.hasChanged(dependency._version)) {
                      return true;
                  }
              }
          }
      },
      markDirty: function () {
          // Process "dirty" events if we can handle delayed notifications
          if (this._evalDelayed && !this[computedState].isBeingEvaluated) {
              this._evalDelayed(false /*isChange*/);
          }
      },
      isActive: function () {
          var state = this[computedState];
          return state.isDirty || state.dependenciesCount > 0;
      },
      respondToChange: function () {
          // Ignore "change" events if we've already scheduled a delayed notification
          if (!this._notificationIsPending) {
              this.evaluatePossiblyAsync();
          } else if (this[computedState].isDirty) {
              this[computedState].isStale = true;
          }
      },
      subscribeToDependency: function (target) {
          if (target._deferUpdates && !this[computedState].disposeWhenNodeIsRemoved) {
              var dirtySub = target.subscribe(this.markDirty, this, 'dirty'),
                  changeSub = target.subscribe(this.respondToChange, this);
              return {
                  _target: target,
                  dispose: function () {
                      dirtySub.dispose();
                      changeSub.dispose();
                  }
              };
          } else {
              return target.subscribe(this.evaluatePossiblyAsync, this);
          }
      },
      evaluatePossiblyAsync: function () {
          var computedObservable = this,
              throttleEvaluationTimeout = computedObservable['throttleEvaluation'];
          if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {
              clearTimeout(this[computedState].evaluationTimeoutInstance);
              this[computedState].evaluationTimeoutInstance = ko.utils.setTimeout(function () {
                  computedObservable.evaluateImmediate(true /*notifyChange*/);
              }, throttleEvaluationTimeout);
          } else if (computedObservable._evalDelayed) {
              computedObservable._evalDelayed(true /*isChange*/);
          } else {
              computedObservable.evaluateImmediate(true /*notifyChange*/);
          }
      },
      evaluateImmediate: function (notifyChange) {
          var computedObservable = this,
              state = computedObservable[computedState],
              disposeWhen = state.disposeWhen,
              changed = false;
  
          if (state.isBeingEvaluated) {
              // If the evaluation of a ko.computed causes side effects, it's possible that it will trigger its own re-evaluation.
              // This is not desirable (it's hard for a developer to realise a chain of dependencies might cause this, and they almost
              // certainly didn't intend infinite re-evaluations). So, for predictability, we simply prevent ko.computeds from causing
              // their own re-evaluation. Further discussion at https://github.com/SteveSanderson/knockout/pull/387
              return;
          }
  
          // Do not evaluate (and possibly capture new dependencies) if disposed
          if (state.isDisposed) {
              return;
          }
  
          if (state.disposeWhenNodeIsRemoved && !ko.utils.domNodeIsAttachedToDocument(state.disposeWhenNodeIsRemoved) || disposeWhen && disposeWhen()) {
              // See comment above about suppressDisposalUntilDisposeWhenReturnsFalse
              if (!state.suppressDisposalUntilDisposeWhenReturnsFalse) {
                  computedObservable.dispose();
                  return;
              }
          } else {
              // It just did return false, so we can stop suppressing now
              state.suppressDisposalUntilDisposeWhenReturnsFalse = false;
          }
  
          state.isBeingEvaluated = true;
          try {
              changed = this.evaluateImmediate_CallReadWithDependencyDetection(notifyChange);
          } finally {
              state.isBeingEvaluated = false;
          }
  
          if (!state.dependenciesCount) {
              computedObservable.dispose();
          }
  
          return changed;
      },
      evaluateImmediate_CallReadWithDependencyDetection: function (notifyChange) {
          // This function is really just part of the evaluateImmediate logic. You would never call it from anywhere else.
          // Factoring it out into a separate function means it can be independent of the try/catch block in evaluateImmediate,
          // which contributes to saving about 40% off the CPU overhead of computed evaluation (on V8 at least).
  
          var computedObservable = this,
              state = computedObservable[computedState],
              changed = false;
  
          // Initially, we assume that none of the subscriptions are still being used (i.e., all are candidates for disposal).
          // Then, during evaluation, we cross off any that are in fact still being used.
          var isInitial = state.pure ? undefined : !state.dependenciesCount,   // If we're evaluating when there are no previous dependencies, it must be the first time
              dependencyDetectionContext = {
                  computedObservable: computedObservable,
                  disposalCandidates: state.dependencyTracking,
                  disposalCount: state.dependenciesCount
              };
  
          ko.dependencyDetection.begin({
              callbackTarget: dependencyDetectionContext,
              callback: computedBeginDependencyDetectionCallback,
              computed: computedObservable,
              isInitial: isInitial
          });
  
          state.dependencyTracking = {};
          state.dependenciesCount = 0;
  
          var newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext);
  
          if (computedObservable.isDifferent(state.latestValue, newValue)) {
              if (!state.isSleeping) {
                  computedObservable["notifySubscribers"](state.latestValue, "beforeChange");
              }
  
              state.latestValue = newValue;
              if (DEBUG) computedObservable._latestValue = newValue;
  
              if (state.isSleeping) {
                  computedObservable.updateVersion();
              } else if (notifyChange) {
                  computedObservable["notifySubscribers"](state.latestValue);
              }
  
              changed = true;
          }
  
          if (isInitial) {
              computedObservable["notifySubscribers"](state.latestValue, "awake");
          }
  
          return changed;
      },
      evaluateImmediate_CallReadThenEndDependencyDetection: function (state, dependencyDetectionContext) {
          // This function is really part of the evaluateImmediate_CallReadWithDependencyDetection logic.
          // You'd never call it from anywhere else. Factoring it out means that evaluateImmediate_CallReadWithDependencyDetection
          // can be independent of try/finally blocks, which contributes to saving about 40% off the CPU
          // overhead of computed evaluation (on V8 at least).
  
          try {
              var readFunction = state.readFunction;
              return state.evaluatorFunctionTarget ? readFunction.call(state.evaluatorFunctionTarget) : readFunction();
          } finally {
              ko.dependencyDetection.end();
  
              // For each subscription no longer being used, remove it from the active subscriptions list and dispose it
              if (dependencyDetectionContext.disposalCount && !state.isSleeping) {
                  ko.utils.objectForEach(dependencyDetectionContext.disposalCandidates, computedDisposeDependencyCallback);
              }
  
              state.isStale = state.isDirty = false;
          }
      },
      peek: function (evaluate) {
          // By default, peek won't re-evaluate, except while the computed is sleeping or to get the initial value when "deferEvaluation" is set.
          // Pass in true to evaluate if needed.
          var state = this[computedState];
          if ((state.isDirty && (evaluate || !state.dependenciesCount)) || (state.isSleeping && this.haveDependenciesChanged())) {
              this.evaluateImmediate();
          }
          return state.latestValue;
      },
      limit: function (limitFunction) {
          // Override the limit function with one that delays evaluation as well
          ko.subscribable['fn'].limit.call(this, limitFunction);
          this._evalIfChanged = function () {
              if (this[computedState].isStale) {
                  this.evaluateImmediate();
              } else {
                  this[computedState].isDirty = false;
              }
              return this[computedState].latestValue;
          };
          this._evalDelayed = function (isChange) {
              this._limitBeforeChange(this[computedState].latestValue);
  
              // Mark as dirty
              this[computedState].isDirty = true;
              if (isChange) {
                  this[computedState].isStale = true;
              }
  
              // Pass the observable to the "limit" code, which will evaluate it when
              // it's time to do the notification.
              this._limitChange(this);
          };
      },
      dispose: function () {
          var state = this[computedState];
          if (!state.isSleeping && state.dependencyTracking) {
              ko.utils.objectForEach(state.dependencyTracking, function (id, dependency) {
                  if (dependency.dispose)
                      dependency.dispose();
              });
          }
          if (state.disposeWhenNodeIsRemoved && state.domNodeDisposalCallback) {
              ko.utils.domNodeDisposal.removeDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback);
          }
          state.dependencyTracking = null;
          state.dependenciesCount = 0;
          state.isDisposed = true;
          state.isStale = false;
          state.isDirty = false;
          state.isSleeping = false;
          state.disposeWhenNodeIsRemoved = null;
      }
  };
  
  var pureComputedOverrides = {
      beforeSubscriptionAdd: function (event) {
          // If asleep, wake up the computed by subscribing to any dependencies.
          var computedObservable = this,
              state = computedObservable[computedState];
          if (!state.isDisposed && state.isSleeping && event == 'change') {
              state.isSleeping = false;
              if (state.isStale || computedObservable.haveDependenciesChanged()) {
                  state.dependencyTracking = null;
                  state.dependenciesCount = 0;
                  if (computedObservable.evaluateImmediate()) {
                      computedObservable.updateVersion();
                  }
              } else {
                  // First put the dependencies in order
                  var dependeciesOrder = [];
                  ko.utils.objectForEach(state.dependencyTracking, function (id, dependency) {
                      dependeciesOrder[dependency._order] = id;
                  });
                  // Next, subscribe to each one
                  ko.utils.arrayForEach(dependeciesOrder, function (id, order) {
                      var dependency = state.dependencyTracking[id],
                          subscription = computedObservable.subscribeToDependency(dependency._target);
                      subscription._order = order;
                      subscription._version = dependency._version;
                      state.dependencyTracking[id] = subscription;
                  });
              }
              if (!state.isDisposed) {     // test since evaluating could trigger disposal
                  computedObservable["notifySubscribers"](state.latestValue, "awake");
              }
          }
      },
      afterSubscriptionRemove: function (event) {
          var state = this[computedState];
          if (!state.isDisposed && event == 'change' && !this.hasSubscriptionsForEvent('change')) {
              ko.utils.objectForEach(state.dependencyTracking, function (id, dependency) {
                  if (dependency.dispose) {
                      state.dependencyTracking[id] = {
                          _target: dependency._target,
                          _order: dependency._order,
                          _version: dependency._version
                      };
                      dependency.dispose();
                  }
              });
              state.isSleeping = true;
              this["notifySubscribers"](undefined, "asleep");
          }
      },
      getVersion: function () {
          // Because a pure computed is not automatically updated while it is sleeping, we can't
          // simply return the version number. Instead, we check if any of the dependencies have
          // changed and conditionally re-evaluate the computed observable.
          var state = this[computedState];
          if (state.isSleeping && (state.isStale || this.haveDependenciesChanged())) {
              this.evaluateImmediate();
          }
          return ko.subscribable['fn'].getVersion.call(this);
      }
  };
  
  var deferEvaluationOverrides = {
      beforeSubscriptionAdd: function (event) {
          // This will force a computed with deferEvaluation to evaluate when the first subscription is registered.
          if (event == 'change' || event == 'beforeChange') {
              this.peek();
          }
      }
  };
  
  // Note that for browsers that don't support proto assignment, the
  // inheritance chain is created manually in the ko.computed constructor
  if (ko.utils.canSetPrototype) {
      ko.utils.setPrototypeOf(computedFn, ko.subscribable['fn']);
  }
  
  // Set the proto chain values for ko.hasPrototype
  var protoProp = ko.observable.protoProperty; // == "__ko_proto__"
  ko.computed[protoProp] = ko.observable;
  computedFn[protoProp] = ko.computed;
  
  ko.isComputed = function (instance) {
      return ko.hasPrototype(instance, ko.computed);
  };
  
  ko.isPureComputed = function (instance) {
      return ko.hasPrototype(instance, ko.computed)
          && instance[computedState] && instance[computedState].pure;
  };
  
  ko.exportSymbol('computed', ko.computed);
  ko.exportSymbol('dependentObservable', ko.computed);    // export ko.dependentObservable for backwards compatibility (1.x)
  ko.exportSymbol('isComputed', ko.isComputed);
  ko.exportSymbol('isPureComputed', ko.isPureComputed);
  ko.exportSymbol('computed.fn', computedFn);
  ko.exportProperty(computedFn, 'peek', computedFn.peek);
  ko.exportProperty(computedFn, 'dispose', computedFn.dispose);
  ko.exportProperty(computedFn, 'isActive', computedFn.isActive);
  ko.exportProperty(computedFn, 'getDependenciesCount', computedFn.getDependenciesCount);
  
  ko.pureComputed = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget) {
      if (typeof evaluatorFunctionOrOptions === 'function') {
          return ko.computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget, {'pure':true});
      } else {
          evaluatorFunctionOrOptions = ko.utils.extend({}, evaluatorFunctionOrOptions);   // make a copy of the parameter object
          evaluatorFunctionOrOptions['pure'] = true;
          return ko.computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget);
      }
  }
  ko.exportSymbol('pureComputed', ko.pureComputed);
  
  (function() {
      var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)
  
      ko.toJS = function(rootObject) {
          if (arguments.length == 0)
              throw new Error("When calling ko.toJS, pass the object you want to convert.");
  
          // We just unwrap everything at every level in the object graph
          return mapJsObjectGraph(rootObject, function(valueToMap) {
              // Loop because an observable's value might in turn be another observable wrapper
              for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++)
                  valueToMap = valueToMap();
              return valueToMap;
          });
      };
  
      ko.toJSON = function(rootObject, replacer, space) {     // replacer and space are optional
          var plainJavaScriptObject = ko.toJS(rootObject);
          return ko.utils.stringifyJson(plainJavaScriptObject, replacer, space);
      };
  
      function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) {
          visitedObjects = visitedObjects || new objectLookup();
  
          rootObject = mapInputCallback(rootObject);
          var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof RegExp)) && (!(rootObject instanceof Date)) && (!(rootObject instanceof String)) && (!(rootObject instanceof Number)) && (!(rootObject instanceof Boolean));
          if (!canHaveProperties)
              return rootObject;
  
          var outputProperties = rootObject instanceof Array ? [] : {};
          visitedObjects.save(rootObject, outputProperties);
  
          visitPropertiesOrArrayEntries(rootObject, function(indexer) {
              var propertyValue = mapInputCallback(rootObject[indexer]);
  
              switch (typeof propertyValue) {
                  case "boolean":
                  case "number":
                  case "string":
                  case "function":
                      outputProperties[indexer] = propertyValue;
                      break;
                  case "object":
                  case "undefined":
                      var previouslyMappedValue = visitedObjects.get(propertyValue);
                      outputProperties[indexer] = (previouslyMappedValue !== undefined)
                          ? previouslyMappedValue
                          : mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects);
                      break;
              }
          });
  
          return outputProperties;
      }
  
      function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {
          if (rootObject instanceof Array) {
              for (var i = 0; i < rootObject.length; i++)
                  visitorCallback(i);
  
              // For arrays, also respect toJSON property for custom mappings (fixes #278)
              if (typeof rootObject['toJSON'] == 'function')
                  visitorCallback('toJSON');
          } else {
              for (var propertyName in rootObject) {
                  visitorCallback(propertyName);
              }
          }
      };
  
      function objectLookup() {
          this.keys = [];
          this.values = [];
      };
  
      objectLookup.prototype = {
          constructor: objectLookup,
          save: function(key, value) {
              var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
              if (existingIndex >= 0)
                  this.values[existingIndex] = value;
              else {
                  this.keys.push(key);
                  this.values.push(value);
              }
          },
          get: function(key) {
              var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
              return (existingIndex >= 0) ? this.values[existingIndex] : undefined;
          }
      };
  })();
  
  ko.exportSymbol('toJS', ko.toJS);
  ko.exportSymbol('toJSON', ko.toJSON);
  (function () {
      var hasDomDataExpandoProperty = '__ko__hasDomDataOptionValue__';
  
      // Normally, SELECT elements and their OPTIONs can only take value of type 'string' (because the values
      // are stored on DOM attributes). ko.selectExtensions provides a way for SELECTs/OPTIONs to have values
      // that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.
      ko.selectExtensions = {
          readValue : function(element) {
              switch (ko.utils.tagNameLower(element)) {
                  case 'option':
                      if (element[hasDomDataExpandoProperty] === true)
                          return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);
                      return ko.utils.ieVersion <= 7
                          ? (element.getAttributeNode('value') && element.getAttributeNode('value').specified ? element.value : element.text)
                          : element.value;
                  case 'select':
                      return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;
                  default:
                      return element.value;
              }
          },
  
          writeValue: function(element, value, allowUnset) {
              switch (ko.utils.tagNameLower(element)) {
                  case 'option':
                      switch(typeof value) {
                          case "string":
                              ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);
                              if (hasDomDataExpandoProperty in element) { // IE <= 8 throws errors if you delete non-existent properties from a DOM node
                                  delete element[hasDomDataExpandoProperty];
                              }
                              element.value = value;
                              break;
                          default:
                              // Store arbitrary object using DomData
                              ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, value);
                              element[hasDomDataExpandoProperty] = true;
  
                              // Special treatment of numbers is just for backward compatibility. KO 1.2.1 wrote numerical values to element.value.
                              element.value = typeof value === "number" ? value : "";
                              break;
                      }
                      break;
                  case 'select':
                      if (value === "" || value === null)       // A blank string or null value will select the caption
                          value = undefined;
                      var selection = -1;
                      for (var i = 0, n = element.options.length, optionValue; i < n; ++i) {
                          optionValue = ko.selectExtensions.readValue(element.options[i]);
                          // Include special check to handle selecting a caption with a blank string value
                          if (optionValue == value || (optionValue == "" && value === undefined)) {
                              selection = i;
                              break;
                          }
                      }
                      if (allowUnset || selection >= 0 || (value === undefined && element.size > 1)) {
                          element.selectedIndex = selection;
                      }
                      break;
                  default:
                      if ((value === null) || (value === undefined))
                          value = "";
                      element.value = value;
                      break;
              }
          }
      };
  })();
  
  ko.exportSymbol('selectExtensions', ko.selectExtensions);
  ko.exportSymbol('selectExtensions.readValue', ko.selectExtensions.readValue);
  ko.exportSymbol('selectExtensions.writeValue', ko.selectExtensions.writeValue);
  ko.expressionRewriting = (function () {
      var javaScriptReservedWords = ["true", "false", "null", "undefined"];
  
      // Matches something that can be assigned to--either an isolated identifier or something ending with a property accessor
      // This is designed to be simple and avoid false negatives, but could produce false positives (e.g., a+b.c).
      // This also will not properly handle nested brackets (e.g., obj1[obj2['prop']]; see #911).
      var javaScriptAssignmentTarget = /^(?:[$_a-z][$\w]*|(.+)(\.\s*[$_a-z][$\w]*|\[.+\]))$/i;
  
      function getWriteableValue(expression) {
          if (ko.utils.arrayIndexOf(javaScriptReservedWords, expression) >= 0)
              return false;
          var match = expression.match(javaScriptAssignmentTarget);
          return match === null ? false : match[1] ? ('Object(' + match[1] + ')' + match[2]) : expression;
      }
  
      // The following regular expressions will be used to split an object-literal string into tokens
  
          // These two match strings, either with double quotes or single quotes
      var stringDouble = '"(?:[^"\\\\]|\\\\.)*"',
          stringSingle = "'(?:[^'\\\\]|\\\\.)*'",
          // Matches a regular expression (text enclosed by slashes), but will also match sets of divisions
          // as a regular expression (this is handled by the parsing loop below).
          stringRegexp = '/(?:[^/\\\\]|\\\\.)*/\w*',
          // These characters have special meaning to the parser and must not appear in the middle of a
          // token, except as part of a string.
          specials = ',"\'{}()/:[\\]',
          // Match text (at least two characters) that does not contain any of the above special characters,
          // although some of the special characters are allowed to start it (all but the colon and comma).
          // The text can contain spaces, but leading or trailing spaces are skipped.
          everyThingElse = '[^\\s:,/][^' + specials + ']*[^\\s' + specials + ']',
          // Match any non-space character not matched already. This will match colons and commas, since they're
          // not matched by "everyThingElse", but will also match any other single character that wasn't already
          // matched (for example: in "a: 1, b: 2", each of the non-space characters will be matched by oneNotSpace).
          oneNotSpace = '[^\\s]',
  
          // Create the actual regular expression by or-ing the above strings. The order is important.
          bindingToken = RegExp(stringDouble + '|' + stringSingle + '|' + stringRegexp + '|' + everyThingElse + '|' + oneNotSpace, 'g'),
  
          // Match end of previous token to determine whether a slash is a division or regex.
          divisionLookBehind = /[\])"'A-Za-z0-9_$]+$/,
          keywordRegexLookBehind = {'in':1,'return':1,'typeof':1};
  
      function parseObjectLiteral(objectLiteralString) {
          // Trim leading and trailing spaces from the string
          var str = ko.utils.stringTrim(objectLiteralString);
  
          // Trim braces '{' surrounding the whole object literal
          if (str.charCodeAt(0) === 123) str = str.slice(1, -1);
  
          // Split into tokens
          var result = [], toks = str.match(bindingToken), key, values = [], depth = 0;
  
          if (toks) {
              // Append a comma so that we don't need a separate code block to deal with the last item
              toks.push(',');
  
              for (var i = 0, tok; tok = toks[i]; ++i) {
                  var c = tok.charCodeAt(0);
                  // A comma signals the end of a key/value pair if depth is zero
                  if (c === 44) { // ","
                      if (depth <= 0) {
                          result.push((key && values.length) ? {key: key, value: values.join('')} : {'unknown': key || values.join('')});
                          key = depth = 0;
                          values = [];
                          continue;
                      }
                  // Simply skip the colon that separates the name and value
                  } else if (c === 58) { // ":"
                      if (!depth && !key && values.length === 1) {
                          key = values.pop();
                          continue;
                      }
                  // A set of slashes is initially matched as a regular expression, but could be division
                  } else if (c === 47 && i && tok.length > 1) {  // "/"
                      // Look at the end of the previous token to determine if the slash is actually division
                      var match = toks[i-1].match(divisionLookBehind);
                      if (match && !keywordRegexLookBehind[match[0]]) {
                          // The slash is actually a division punctuator; re-parse the remainder of the string (not including the slash)
                          str = str.substr(str.indexOf(tok) + 1);
                          toks = str.match(bindingToken);
                          toks.push(',');
                          i = -1;
                          // Continue with just the slash
                          tok = '/';
                      }
                  // Increment depth for parentheses, braces, and brackets so that interior commas are ignored
                  } else if (c === 40 || c === 123 || c === 91) { // '(', '{', '['
                      ++depth;
                  } else if (c === 41 || c === 125 || c === 93) { // ')', '}', ']'
                      --depth;
                  // The key will be the first token; if it's a string, trim the quotes
                  } else if (!key && !values.length && (c === 34 || c === 39)) { // '"', "'"
                      tok = tok.slice(1, -1);
                  }
                  values.push(tok);
              }
          }
          return result;
      }
  
      // Two-way bindings include a write function that allow the handler to update the value even if it's not an observable.
      var twoWayBindings = {};
  
      function preProcessBindings(bindingsStringOrKeyValueArray, bindingOptions) {
          bindingOptions = bindingOptions || {};
  
          function processKeyValue(key, val) {
              var writableVal;
              function callPreprocessHook(obj) {
                  return (obj && obj['preprocess']) ? (val = obj['preprocess'](val, key, processKeyValue)) : true;
              }
              if (!bindingParams) {
                  if (!callPreprocessHook(ko['getBindingHandler'](key)))
                      return;
  
                  if (twoWayBindings[key] && (writableVal = getWriteableValue(val))) {
                      // For two-way bindings, provide a write method in case the value
                      // isn't a writable observable.
                      propertyAccessorResultStrings.push("'" + key + "':function(_z){" + writableVal + "=_z}");
                  }
              }
              // Values are wrapped in a function so that each value can be accessed independently
              if (makeValueAccessors) {
                  val = 'function(){return ' + val + ' }';
              }
              resultStrings.push("'" + key + "':" + val);
          }
  
          var resultStrings = [],
              propertyAccessorResultStrings = [],
              makeValueAccessors = bindingOptions['valueAccessors'],
              bindingParams = bindingOptions['bindingParams'],
              keyValueArray = typeof bindingsStringOrKeyValueArray === "string" ?
                  parseObjectLiteral(bindingsStringOrKeyValueArray) : bindingsStringOrKeyValueArray;
  
          ko.utils.arrayForEach(keyValueArray, function(keyValue) {
              processKeyValue(keyValue.key || keyValue['unknown'], keyValue.value);
          });
  
          if (propertyAccessorResultStrings.length)
              processKeyValue('_ko_property_writers', "{" + propertyAccessorResultStrings.join(",") + " }");
  
          return resultStrings.join(",");
      }
  
      return {
          bindingRewriteValidators: [],
  
          twoWayBindings: twoWayBindings,
  
          parseObjectLiteral: parseObjectLiteral,
  
          preProcessBindings: preProcessBindings,
  
          keyValueArrayContainsKey: function(keyValueArray, key) {
              for (var i = 0; i < keyValueArray.length; i++)
                  if (keyValueArray[i]['key'] == key)
                      return true;
              return false;
          },
  
          // Internal, private KO utility for updating model properties from within bindings
          // property:            If the property being updated is (or might be) an observable, pass it here
          //                      If it turns out to be a writable observable, it will be written to directly
          // allBindings:         An object with a get method to retrieve bindings in the current execution context.
          //                      This will be searched for a '_ko_property_writers' property in case you're writing to a non-observable
          // key:                 The key identifying the property to be written. Example: for { hasFocus: myValue }, write to 'myValue' by specifying the key 'hasFocus'
          // value:               The value to be written
          // checkIfDifferent:    If true, and if the property being written is a writable observable, the value will only be written if
          //                      it is !== existing value on that writable observable
          writeValueToProperty: function(property, allBindings, key, value, checkIfDifferent) {
              if (!property || !ko.isObservable(property)) {
                  var propWriters = allBindings.get('_ko_property_writers');
                  if (propWriters && propWriters[key])
                      propWriters[key](value);
              } else if (ko.isWriteableObservable(property) && (!checkIfDifferent || property.peek() !== value)) {
                  property(value);
              }
          }
      };
  })();
  
  ko.exportSymbol('expressionRewriting', ko.expressionRewriting);
  ko.exportSymbol('expressionRewriting.bindingRewriteValidators', ko.expressionRewriting.bindingRewriteValidators);
  ko.exportSymbol('expressionRewriting.parseObjectLiteral', ko.expressionRewriting.parseObjectLiteral);
  ko.exportSymbol('expressionRewriting.preProcessBindings', ko.expressionRewriting.preProcessBindings);
  
  // Making bindings explicitly declare themselves as "two way" isn't ideal in the long term (it would be better if
  // all bindings could use an official 'property writer' API without needing to declare that they might). However,
  // since this is not, and has never been, a public API (_ko_property_writers was never documented), it's acceptable
  // as an internal implementation detail in the short term.
  // For those developers who rely on _ko_property_writers in their custom bindings, we expose _twoWayBindings as an
  // undocumented feature that makes it relatively easy to upgrade to KO 3.0. However, this is still not an official
  // public API, and we reserve the right to remove it at any time if we create a real public property writers API.
  ko.exportSymbol('expressionRewriting._twoWayBindings', ko.expressionRewriting.twoWayBindings);
  
  // For backward compatibility, define the following aliases. (Previously, these function names were misleading because
  // they referred to JSON specifically, even though they actually work with arbitrary JavaScript object literal expressions.)
  ko.exportSymbol('jsonExpressionRewriting', ko.expressionRewriting);
  ko.exportSymbol('jsonExpressionRewriting.insertPropertyAccessorsIntoJson', ko.expressionRewriting.preProcessBindings);
  (function() {
      // "Virtual elements" is an abstraction on top of the usual DOM API which understands the notion that comment nodes
      // may be used to represent hierarchy (in addition to the DOM's natural hierarchy).
      // If you call the DOM-manipulating functions on ko.virtualElements, you will be able to read and write the state
      // of that virtual hierarchy
      //
      // The point of all this is to support containerless templates (e.g., <!-- ko foreach:someCollection -->blah<!-- /ko -->)
      // without having to scatter special cases all over the binding and templating code.
  
      // IE 9 cannot reliably read the "nodeValue" property of a comment node (see https://github.com/SteveSanderson/knockout/issues/186)
      // but it does give them a nonstandard alternative property called "text" that it can read reliably. Other browsers don't have that property.
      // So, use node.text where available, and node.nodeValue elsewhere
      var commentNodesHaveTextProperty = document && document.createComment("test").text === "<!--test-->";
  
      var startCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*ko(?:\s+([\s\S]+))?\s*-->$/ : /^\s*ko(?:\s+([\s\S]+))?\s*$/;
      var endCommentRegex =   commentNodesHaveTextProperty ? /^<!--\s*\/ko\s*-->$/ : /^\s*\/ko\s*$/;
      var htmlTagsWithOptionallyClosingChildren = { 'ul': true, 'ol': true };
  
      function isStartComment(node) {
          return (node.nodeType == 8) && startCommentRegex.test(commentNodesHaveTextProperty ? node.text : node.nodeValue);
      }
  
      function isEndComment(node) {
          return (node.nodeType == 8) && endCommentRegex.test(commentNodesHaveTextProperty ? node.text : node.nodeValue);
      }
  
      function getVirtualChildren(startComment, allowUnbalanced) {
          var currentNode = startComment;
          var depth = 1;
          var children = [];
          while (currentNode = currentNode.nextSibling) {
              if (isEndComment(currentNode)) {
                  depth--;
                  if (depth === 0)
                      return children;
              }
  
              children.push(currentNode);
  
              if (isStartComment(currentNode))
                  depth++;
          }
          if (!allowUnbalanced)
              throw new Error("Cannot find closing comment tag to match: " + startComment.nodeValue);
          return null;
      }
  
      function getMatchingEndComment(startComment, allowUnbalanced) {
          var allVirtualChildren = getVirtualChildren(startComment, allowUnbalanced);
          if (allVirtualChildren) {
              if (allVirtualChildren.length > 0)
                  return allVirtualChildren[allVirtualChildren.length - 1].nextSibling;
              return startComment.nextSibling;
          } else
              return null; // Must have no matching end comment, and allowUnbalanced is true
      }
  
      function getUnbalancedChildTags(node) {
          // e.g., from <div>OK</div><!-- ko blah --><span>Another</span>, returns: <!-- ko blah --><span>Another</span>
          //       from <div>OK</div><!-- /ko --><!-- /ko -->,             returns: <!-- /ko --><!-- /ko -->
          var childNode = node.firstChild, captureRemaining = null;
          if (childNode) {
              do {
                  if (captureRemaining)                   // We already hit an unbalanced node and are now just scooping up all subsequent nodes
                      captureRemaining.push(childNode);
                  else if (isStartComment(childNode)) {
                      var matchingEndComment = getMatchingEndComment(childNode, /* allowUnbalanced: */ true);
                      if (matchingEndComment)             // It's a balanced tag, so skip immediately to the end of this virtual set
                          childNode = matchingEndComment;
                      else
                          captureRemaining = [childNode]; // It's unbalanced, so start capturing from this point
                  } else if (isEndComment(childNode)) {
                      captureRemaining = [childNode];     // It's unbalanced (if it wasn't, we'd have skipped over it already), so start capturing
                  }
              } while (childNode = childNode.nextSibling);
          }
          return captureRemaining;
      }
  
      ko.virtualElements = {
          allowedBindings: {},
  
          childNodes: function(node) {
              return isStartComment(node) ? getVirtualChildren(node) : node.childNodes;
          },
  
          emptyNode: function(node) {
              if (!isStartComment(node))
                  ko.utils.emptyDomNode(node);
              else {
                  var virtualChildren = ko.virtualElements.childNodes(node);
                  for (var i = 0, j = virtualChildren.length; i < j; i++)
                      ko.removeNode(virtualChildren[i]);
              }
          },
  
          setDomNodeChildren: function(node, childNodes) {
              if (!isStartComment(node))
                  ko.utils.setDomNodeChildren(node, childNodes);
              else {
                  ko.virtualElements.emptyNode(node);
                  var endCommentNode = node.nextSibling; // Must be the next sibling, as we just emptied the children
                  for (var i = 0, j = childNodes.length; i < j; i++)
                      endCommentNode.parentNode.insertBefore(childNodes[i], endCommentNode);
              }
          },
  
          prepend: function(containerNode, nodeToPrepend) {
              if (!isStartComment(containerNode)) {
                  if (containerNode.firstChild)
                      containerNode.insertBefore(nodeToPrepend, containerNode.firstChild);
                  else
                      containerNode.appendChild(nodeToPrepend);
              } else {
                  // Start comments must always have a parent and at least one following sibling (the end comment)
                  containerNode.parentNode.insertBefore(nodeToPrepend, containerNode.nextSibling);
              }
          },
  
          insertAfter: function(containerNode, nodeToInsert, insertAfterNode) {
              if (!insertAfterNode) {
                  ko.virtualElements.prepend(containerNode, nodeToInsert);
              } else if (!isStartComment(containerNode)) {
                  // Insert after insertion point
                  if (insertAfterNode.nextSibling)
                      containerNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
                  else
                      containerNode.appendChild(nodeToInsert);
              } else {
                  // Children of start comments must always have a parent and at least one following sibling (the end comment)
                  containerNode.parentNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
              }
          },
  
          firstChild: function(node) {
              if (!isStartComment(node))
                  return node.firstChild;
              if (!node.nextSibling || isEndComment(node.nextSibling))
                  return null;
              return node.nextSibling;
          },
  
          nextSibling: function(node) {
              if (isStartComment(node))
                  node = getMatchingEndComment(node);
              if (node.nextSibling && isEndComment(node.nextSibling))
                  return null;
              return node.nextSibling;
          },
  
          hasBindingValue: isStartComment,
  
          virtualNodeBindingValue: function(node) {
              var regexMatch = (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(startCommentRegex);
              return regexMatch ? regexMatch[1] : null;
          },
  
          normaliseVirtualElementDomStructure: function(elementVerified) {
              // Workaround for https://github.com/SteveSanderson/knockout/issues/155
              // (IE <= 8 or IE 9 quirks mode parses your HTML weirdly, treating closing </li> tags as if they don't exist, thereby moving comment nodes
              // that are direct descendants of <ul> into the preceding <li>)
              if (!htmlTagsWithOptionallyClosingChildren[ko.utils.tagNameLower(elementVerified)])
                  return;
  
              // Scan immediate children to see if they contain unbalanced comment tags. If they do, those comment tags
              // must be intended to appear *after* that child, so move them there.
              var childNode = elementVerified.firstChild;
              if (childNode) {
                  do {
                      if (childNode.nodeType === 1) {
                          var unbalancedTags = getUnbalancedChildTags(childNode);
                          if (unbalancedTags) {
                              // Fix up the DOM by moving the unbalanced tags to where they most likely were intended to be placed - *after* the child
                              var nodeToInsertBefore = childNode.nextSibling;
                              for (var i = 0; i < unbalancedTags.length; i++) {
                                  if (nodeToInsertBefore)
                                      elementVerified.insertBefore(unbalancedTags[i], nodeToInsertBefore);
                                  else
                                      elementVerified.appendChild(unbalancedTags[i]);
                              }
                          }
                      }
                  } while (childNode = childNode.nextSibling);
              }
          }
      };
  })();
  ko.exportSymbol('virtualElements', ko.virtualElements);
  ko.exportSymbol('virtualElements.allowedBindings', ko.virtualElements.allowedBindings);
  ko.exportSymbol('virtualElements.emptyNode', ko.virtualElements.emptyNode);
  //ko.exportSymbol('virtualElements.firstChild', ko.virtualElements.firstChild);     // firstChild is not minified
  ko.exportSymbol('virtualElements.insertAfter', ko.virtualElements.insertAfter);
  //ko.exportSymbol('virtualElements.nextSibling', ko.virtualElements.nextSibling);   // nextSibling is not minified
  ko.exportSymbol('virtualElements.prepend', ko.virtualElements.prepend);
  ko.exportSymbol('virtualElements.setDomNodeChildren', ko.virtualElements.setDomNodeChildren);
  (function() {
      var defaultBindingAttributeName = "data-bind";
  
      ko.bindingProvider = function() {
          this.bindingCache = {};
      };
  
      ko.utils.extend(ko.bindingProvider.prototype, {
          'nodeHasBindings': function(node) {
              switch (node.nodeType) {
                  case 1: // Element
                      return node.getAttribute(defaultBindingAttributeName) != null
                          || ko.components['getComponentNameForNode'](node);
                  case 8: // Comment node
                      return ko.virtualElements.hasBindingValue(node);
                  default: return false;
              }
          },
  
          'getBindings': function(node, bindingContext) {
              var bindingsString = this['getBindingsString'](node, bindingContext),
                  parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
              return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ false);
          },
  
          'getBindingAccessors': function(node, bindingContext) {
              var bindingsString = this['getBindingsString'](node, bindingContext),
                  parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node, { 'valueAccessors': true }) : null;
              return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ true);
          },
  
          // The following function is only used internally by this default provider.
          // It's not part of the interface definition for a general binding provider.
          'getBindingsString': function(node, bindingContext) {
              switch (node.nodeType) {
                  case 1: return node.getAttribute(defaultBindingAttributeName);   // Element
                  case 8: return ko.virtualElements.virtualNodeBindingValue(node); // Comment node
                  default: return null;
              }
          },
  
          // The following function is only used internally by this default provider.
          // It's not part of the interface definition for a general binding provider.
          'parseBindingsString': function(bindingsString, bindingContext, node, options) {
              try {
                  var bindingFunction = createBindingsStringEvaluatorViaCache(bindingsString, this.bindingCache, options);
                  return bindingFunction(bindingContext, node);
              } catch (ex) {
                  ex.message = "Unable to parse bindings.\nBindings value: " + bindingsString + "\nMessage: " + ex.message;
                  throw ex;
              }
          }
      });
  
      ko.bindingProvider['instance'] = new ko.bindingProvider();
  
      function createBindingsStringEvaluatorViaCache(bindingsString, cache, options) {
          var cacheKey = bindingsString + (options && options['valueAccessors'] || '');
          return cache[cacheKey]
              || (cache[cacheKey] = createBindingsStringEvaluator(bindingsString, options));
      }
  
      function createBindingsStringEvaluator(bindingsString, options) {
          // Build the source for a function that evaluates "expression"
          // For each scope variable, add an extra level of "with" nesting
          // Example result: with(sc1) { with(sc0) { return (expression) } }
          var rewrittenBindings = ko.expressionRewriting.preProcessBindings(bindingsString, options),
              functionBody = "with($context){with($data||{}){return{" + rewrittenBindings + "}}}";
          return new Function("$context", "$element", functionBody);
      }
  })();
  
  ko.exportSymbol('bindingProvider', ko.bindingProvider);
  (function () {
      ko.bindingHandlers = {};
  
      // The following element types will not be recursed into during binding.
      var bindingDoesNotRecurseIntoElementTypes = {
          // Don't want bindings that operate on text nodes to mutate <script> and <textarea> contents,
          // because it's unexpected and a potential XSS issue.
          // Also bindings should not operate on <template> elements since this breaks in Internet Explorer
          // and because such elements' contents are always intended to be bound in a different context
          // from where they appear in the document.
          'script': true,
          'textarea': true,
          'template': true
      };
  
      // Use an overridable method for retrieving binding handlers so that a plugins may support dynamically created handlers
      ko['getBindingHandler'] = function(bindingKey) {
          return ko.bindingHandlers[bindingKey];
      };
  
      // The ko.bindingContext constructor is only called directly to create the root context. For child
      // contexts, use bindingContext.createChildContext or bindingContext.extend.
      ko.bindingContext = function(dataItemOrAccessor, parentContext, dataItemAlias, extendCallback, options) {
  
          // The binding context object includes static properties for the current, parent, and root view models.
          // If a view model is actually stored in an observable, the corresponding binding context object, and
          // any child contexts, must be updated when the view model is changed.
          function updateContext() {
              // Most of the time, the context will directly get a view model object, but if a function is given,
              // we call the function to retrieve the view model. If the function accesses any observables or returns
              // an observable, the dependency is tracked, and those observables can later cause the binding
              // context to be updated.
              var dataItemOrObservable = isFunc ? dataItemOrAccessor() : dataItemOrAccessor,
                  dataItem = ko.utils.unwrapObservable(dataItemOrObservable);
  
              if (parentContext) {
                  // When a "parent" context is given, register a dependency on the parent context. Thus whenever the
                  // parent context is updated, this context will also be updated.
                  if (parentContext._subscribable)
                      parentContext._subscribable();
  
                  // Copy $root and any custom properties from the parent context
                  ko.utils.extend(self, parentContext);
  
                  // Because the above copy overwrites our own properties, we need to reset them.
                  self._subscribable = subscribable;
              } else {
                  self['$parents'] = [];
                  self['$root'] = dataItem;
  
                  // Export 'ko' in the binding context so it will be available in bindings and templates
                  // even if 'ko' isn't exported as a global, such as when using an AMD loader.
                  // See https://github.com/SteveSanderson/knockout/issues/490
                  self['ko'] = ko;
              }
              self['$rawData'] = dataItemOrObservable;
              self['$data'] = dataItem;
              if (dataItemAlias)
                  self[dataItemAlias] = dataItem;
  
              // The extendCallback function is provided when creating a child context or extending a context.
              // It handles the specific actions needed to finish setting up the binding context. Actions in this
              // function could also add dependencies to this binding context.
              if (extendCallback)
                  extendCallback(self, parentContext, dataItem);
  
              return self['$data'];
          }
          function disposeWhen() {
              return nodes && !ko.utils.anyDomNodeIsAttachedToDocument(nodes);
          }
  
          var self = this,
              isFunc = typeof(dataItemOrAccessor) == "function" && !ko.isObservable(dataItemOrAccessor),
              nodes,
              subscribable;
  
          if (options && options['exportDependencies']) {
              // The "exportDependencies" option means that the calling code will track any dependencies and re-create
              // the binding context when they change.
              updateContext();
          } else {
              subscribable = ko.dependentObservable(updateContext, null, { disposeWhen: disposeWhen, disposeWhenNodeIsRemoved: true });
  
              // At this point, the binding context has been initialized, and the "subscribable" computed observable is
              // subscribed to any observables that were accessed in the process. If there is nothing to track, the
              // computed will be inactive, and we can safely throw it away. If it's active, the computed is stored in
              // the context object.
              if (subscribable.isActive()) {
                  self._subscribable = subscribable;
  
                  // Always notify because even if the model ($data) hasn't changed, other context properties might have changed
                  subscribable['equalityComparer'] = null;
  
                  // We need to be able to dispose of this computed observable when it's no longer needed. This would be
                  // easy if we had a single node to watch, but binding contexts can be used by many different nodes, and
                  // we cannot assume that those nodes have any relation to each other. So instead we track any node that
                  // the context is attached to, and dispose the computed when all of those nodes have been cleaned.
  
                  // Add properties to *subscribable* instead of *self* because any properties added to *self* may be overwritten on updates
                  nodes = [];
                  subscribable._addNode = function(node) {
                      nodes.push(node);
                      ko.utils.domNodeDisposal.addDisposeCallback(node, function(node) {
                          ko.utils.arrayRemoveItem(nodes, node);
                          if (!nodes.length) {
                              subscribable.dispose();
                              self._subscribable = subscribable = undefined;
                          }
                      });
                  };
              }
          }
      }
  
      // Extend the binding context hierarchy with a new view model object. If the parent context is watching
      // any observables, the new child context will automatically get a dependency on the parent context.
      // But this does not mean that the $data value of the child context will also get updated. If the child
      // view model also depends on the parent view model, you must provide a function that returns the correct
      // view model on each update.
      ko.bindingContext.prototype['createChildContext'] = function (dataItemOrAccessor, dataItemAlias, extendCallback, options) {
          return new ko.bindingContext(dataItemOrAccessor, this, dataItemAlias, function(self, parentContext) {
              // Extend the context hierarchy by setting the appropriate pointers
              self['$parentContext'] = parentContext;
              self['$parent'] = parentContext['$data'];
              self['$parents'] = (parentContext['$parents'] || []).slice(0);
              self['$parents'].unshift(self['$parent']);
              if (extendCallback)
                  extendCallback(self);
          }, options);
      };
  
      // Extend the binding context with new custom properties. This doesn't change the context hierarchy.
      // Similarly to "child" contexts, provide a function here to make sure that the correct values are set
      // when an observable view model is updated.
      ko.bindingContext.prototype['extend'] = function(properties) {
          // If the parent context references an observable view model, "_subscribable" will always be the
          // latest view model object. If not, "_subscribable" isn't set, and we can use the static "$data" value.
          return new ko.bindingContext(this._subscribable || this['$data'], this, null, function(self, parentContext) {
              // This "child" context doesn't directly track a parent observable view model,
              // so we need to manually set the $rawData value to match the parent.
              self['$rawData'] = parentContext['$rawData'];
              ko.utils.extend(self, typeof(properties) == "function" ? properties() : properties);
          });
      };
  
      ko.bindingContext.prototype.createStaticChildContext = function (dataItemOrAccessor, dataItemAlias) {
          return this['createChildContext'](dataItemOrAccessor, dataItemAlias, null, { "exportDependencies": true });
      };
  
      // Returns the valueAccesor function for a binding value
      function makeValueAccessor(value) {
          return function() {
              return value;
          };
      }
  
      // Returns the value of a valueAccessor function
      function evaluateValueAccessor(valueAccessor) {
          return valueAccessor();
      }
  
      // Given a function that returns bindings, create and return a new object that contains
      // binding value-accessors functions. Each accessor function calls the original function
      // so that it always gets the latest value and all dependencies are captured. This is used
      // by ko.applyBindingsToNode and getBindingsAndMakeAccessors.
      function makeAccessorsFromFunction(callback) {
          return ko.utils.objectMap(ko.dependencyDetection.ignore(callback), function(value, key) {
              return function() {
                  return callback()[key];
              };
          });
      }
  
      // Given a bindings function or object, create and return a new object that contains
      // binding value-accessors functions. This is used by ko.applyBindingsToNode.
      function makeBindingAccessors(bindings, context, node) {
          if (typeof bindings === 'function') {
              return makeAccessorsFromFunction(bindings.bind(null, context, node));
          } else {
              return ko.utils.objectMap(bindings, makeValueAccessor);
          }
      }
  
      // This function is used if the binding provider doesn't include a getBindingAccessors function.
      // It must be called with 'this' set to the provider instance.
      function getBindingsAndMakeAccessors(node, context) {
          return makeAccessorsFromFunction(this['getBindings'].bind(this, node, context));
      }
  
      function validateThatBindingIsAllowedForVirtualElements(bindingName) {
          var validator = ko.virtualElements.allowedBindings[bindingName];
          if (!validator)
              throw new Error("The binding '" + bindingName + "' cannot be used with virtual elements")
      }
  
      function applyBindingsToDescendantsInternal (bindingContext, elementOrVirtualElement, bindingContextsMayDifferFromDomParentElement) {
          var currentChild,
              nextInQueue = ko.virtualElements.firstChild(elementOrVirtualElement),
              provider = ko.bindingProvider['instance'],
              preprocessNode = provider['preprocessNode'];
  
          // Preprocessing allows a binding provider to mutate a node before bindings are applied to it. For example it's
          // possible to insert new siblings after it, and/or replace the node with a different one. This can be used to
          // implement custom binding syntaxes, such as {{ value }} for string interpolation, or custom element types that
          // trigger insertion of <template> contents at that point in the document.
          if (preprocessNode) {
              while (currentChild = nextInQueue) {
                  nextInQueue = ko.virtualElements.nextSibling(currentChild);
                  preprocessNode.call(provider, currentChild);
              }
              // Reset nextInQueue for the next loop
              nextInQueue = ko.virtualElements.firstChild(elementOrVirtualElement);
          }
  
          while (currentChild = nextInQueue) {
              // Keep a record of the next child *before* applying bindings, in case the binding removes the current child from its position
              nextInQueue = ko.virtualElements.nextSibling(currentChild);
              applyBindingsToNodeAndDescendantsInternal(bindingContext, currentChild, bindingContextsMayDifferFromDomParentElement);
          }
      }
  
      function applyBindingsToNodeAndDescendantsInternal (bindingContext, nodeVerified, bindingContextMayDifferFromDomParentElement) {
          var shouldBindDescendants = true;
  
          // Perf optimisation: Apply bindings only if...
          // (1) We need to store the binding context on this node (because it may differ from the DOM parent node's binding context)
          //     Note that we can't store binding contexts on non-elements (e.g., text nodes), as IE doesn't allow expando properties for those
          // (2) It might have bindings (e.g., it has a data-bind attribute, or it's a marker for a containerless template)
          var isElement = (nodeVerified.nodeType === 1);
          if (isElement) // Workaround IE <= 8 HTML parsing weirdness
              ko.virtualElements.normaliseVirtualElementDomStructure(nodeVerified);
  
          var shouldApplyBindings = (isElement && bindingContextMayDifferFromDomParentElement)             // Case (1)
                                 || ko.bindingProvider['instance']['nodeHasBindings'](nodeVerified);       // Case (2)
          if (shouldApplyBindings)
              shouldBindDescendants = applyBindingsToNodeInternal(nodeVerified, null, bindingContext, bindingContextMayDifferFromDomParentElement)['shouldBindDescendants'];
  
          if (shouldBindDescendants && !bindingDoesNotRecurseIntoElementTypes[ko.utils.tagNameLower(nodeVerified)]) {
              // We're recursing automatically into (real or virtual) child nodes without changing binding contexts. So,
              //  * For children of a *real* element, the binding context is certainly the same as on their DOM .parentNode,
              //    hence bindingContextsMayDifferFromDomParentElement is false
              //  * For children of a *virtual* element, we can't be sure. Evaluating .parentNode on those children may
              //    skip over any number of intermediate virtual elements, any of which might define a custom binding context,
              //    hence bindingContextsMayDifferFromDomParentElement is true
              applyBindingsToDescendantsInternal(bindingContext, nodeVerified, /* bindingContextsMayDifferFromDomParentElement: */ !isElement);
          }
      }
  
      var boundElementDomDataKey = ko.utils.domData.nextKey();
  
  
      function topologicalSortBindings(bindings) {
          // Depth-first sort
          var result = [],                // The list of key/handler pairs that we will return
              bindingsConsidered = {},    // A temporary record of which bindings are already in 'result'
              cyclicDependencyStack = []; // Keeps track of a depth-search so that, if there's a cycle, we know which bindings caused it
          ko.utils.objectForEach(bindings, function pushBinding(bindingKey) {
              if (!bindingsConsidered[bindingKey]) {
                  var binding = ko['getBindingHandler'](bindingKey);
                  if (binding) {
                      // First add dependencies (if any) of the current binding
                      if (binding['after']) {
                          cyclicDependencyStack.push(bindingKey);
                          ko.utils.arrayForEach(binding['after'], function(bindingDependencyKey) {
                              if (bindings[bindingDependencyKey]) {
                                  if (ko.utils.arrayIndexOf(cyclicDependencyStack, bindingDependencyKey) !== -1) {
                                      throw Error("Cannot combine the following bindings, because they have a cyclic dependency: " + cyclicDependencyStack.join(", "));
                                  } else {
                                      pushBinding(bindingDependencyKey);
                                  }
                              }
                          });
                          cyclicDependencyStack.length--;
                      }
                      // Next add the current binding
                      result.push({ key: bindingKey, handler: binding });
                  }
                  bindingsConsidered[bindingKey] = true;
              }
          });
  
          return result;
      }
  
      function applyBindingsToNodeInternal(node, sourceBindings, bindingContext, bindingContextMayDifferFromDomParentElement) {
          // Prevent multiple applyBindings calls for the same node, except when a binding value is specified
          var alreadyBound = ko.utils.domData.get(node, boundElementDomDataKey);
          if (!sourceBindings) {
              if (alreadyBound) {
                  throw Error("You cannot apply bindings multiple times to the same element.");
              }
              ko.utils.domData.set(node, boundElementDomDataKey, true);
          }
  
          // Optimization: Don't store the binding context on this node if it's definitely the same as on node.parentNode, because
          // we can easily recover it just by scanning up the node's ancestors in the DOM
          // (note: here, parent node means "real DOM parent" not "virtual parent", as there's no O(1) way to find the virtual parent)
          if (!alreadyBound && bindingContextMayDifferFromDomParentElement)
              ko.storedBindingContextForNode(node, bindingContext);
  
          // Use bindings if given, otherwise fall back on asking the bindings provider to give us some bindings
          var bindings;
          if (sourceBindings && typeof sourceBindings !== 'function') {
              bindings = sourceBindings;
          } else {
              var provider = ko.bindingProvider['instance'],
                  getBindings = provider['getBindingAccessors'] || getBindingsAndMakeAccessors;
  
              // Get the binding from the provider within a computed observable so that we can update the bindings whenever
              // the binding context is updated or if the binding provider accesses observables.
              var bindingsUpdater = ko.dependentObservable(
                  function() {
                      bindings = sourceBindings ? sourceBindings(bindingContext, node) : getBindings.call(provider, node, bindingContext);
                      // Register a dependency on the binding context to support observable view models.
                      if (bindings && bindingContext._subscribable)
                          bindingContext._subscribable();
                      return bindings;
                  },
                  null, { disposeWhenNodeIsRemoved: node }
              );
  
              if (!bindings || !bindingsUpdater.isActive())
                  bindingsUpdater = null;
          }
  
          var bindingHandlerThatControlsDescendantBindings;
          if (bindings) {
              // Return the value accessor for a given binding. When bindings are static (won't be updated because of a binding
              // context update), just return the value accessor from the binding. Otherwise, return a function that always gets
              // the latest binding value and registers a dependency on the binding updater.
              var getValueAccessor = bindingsUpdater
                  ? function(bindingKey) {
                      return function() {
                          return evaluateValueAccessor(bindingsUpdater()[bindingKey]);
                      };
                  } : function(bindingKey) {
                      return bindings[bindingKey];
                  };
  
              // Use of allBindings as a function is maintained for backwards compatibility, but its use is deprecated
              function allBindings() {
                  return ko.utils.objectMap(bindingsUpdater ? bindingsUpdater() : bindings, evaluateValueAccessor);
              }
              // The following is the 3.x allBindings API
              allBindings['get'] = function(key) {
                  return bindings[key] && evaluateValueAccessor(getValueAccessor(key));
              };
              allBindings['has'] = function(key) {
                  return key in bindings;
              };
  
              // First put the bindings into the right order
              var orderedBindings = topologicalSortBindings(bindings);
  
              // Go through the sorted bindings, calling init and update for each
              ko.utils.arrayForEach(orderedBindings, function(bindingKeyAndHandler) {
                  // Note that topologicalSortBindings has already filtered out any nonexistent binding handlers,
                  // so bindingKeyAndHandler.handler will always be nonnull.
                  var handlerInitFn = bindingKeyAndHandler.handler["init"],
                      handlerUpdateFn = bindingKeyAndHandler.handler["update"],
                      bindingKey = bindingKeyAndHandler.key;
  
                  if (node.nodeType === 8) {
                      validateThatBindingIsAllowedForVirtualElements(bindingKey);
                  }
  
                  try {
                      // Run init, ignoring any dependencies
                      if (typeof handlerInitFn == "function") {
                          ko.dependencyDetection.ignore(function() {
                              var initResult = handlerInitFn(node, getValueAccessor(bindingKey), allBindings, bindingContext['$data'], bindingContext);
  
                              // If this binding handler claims to control descendant bindings, make a note of this
                              if (initResult && initResult['controlsDescendantBindings']) {
                                  if (bindingHandlerThatControlsDescendantBindings !== undefined)
                                      throw new Error("Multiple bindings (" + bindingHandlerThatControlsDescendantBindings + " and " + bindingKey + ") are trying to control descendant bindings of the same element. You cannot use these bindings together on the same element.");
                                  bindingHandlerThatControlsDescendantBindings = bindingKey;
                              }
                          });
                      }
  
                      // Run update in its own computed wrapper
                      if (typeof handlerUpdateFn == "function") {
                          ko.dependentObservable(
                              function() {
                                  handlerUpdateFn(node, getValueAccessor(bindingKey), allBindings, bindingContext['$data'], bindingContext);
                              },
                              null,
                              { disposeWhenNodeIsRemoved: node }
                          );
                      }
                  } catch (ex) {
                      ex.message = "Unable to process binding \"" + bindingKey + ": " + bindings[bindingKey] + "\"\nMessage: " + ex.message;
                      throw ex;
                  }
              });
          }
  
          return {
              'shouldBindDescendants': bindingHandlerThatControlsDescendantBindings === undefined
          };
      };
  
      var storedBindingContextDomDataKey = ko.utils.domData.nextKey();
      ko.storedBindingContextForNode = function (node, bindingContext) {
          if (arguments.length == 2) {
              ko.utils.domData.set(node, storedBindingContextDomDataKey, bindingContext);
              if (bindingContext._subscribable)
                  bindingContext._subscribable._addNode(node);
          } else {
              return ko.utils.domData.get(node, storedBindingContextDomDataKey);
          }
      }
  
      function getBindingContext(viewModelOrBindingContext) {
          return viewModelOrBindingContext && (viewModelOrBindingContext instanceof ko.bindingContext)
              ? viewModelOrBindingContext
              : new ko.bindingContext(viewModelOrBindingContext);
      }
  
      ko.applyBindingAccessorsToNode = function (node, bindings, viewModelOrBindingContext) {
          if (node.nodeType === 1) // If it's an element, workaround IE <= 8 HTML parsing weirdness
              ko.virtualElements.normaliseVirtualElementDomStructure(node);
          return applyBindingsToNodeInternal(node, bindings, getBindingContext(viewModelOrBindingContext), true);
      };
  
      ko.applyBindingsToNode = function (node, bindings, viewModelOrBindingContext) {
          var context = getBindingContext(viewModelOrBindingContext);
          return ko.applyBindingAccessorsToNode(node, makeBindingAccessors(bindings, context, node), context);
      };
  
      ko.applyBindingsToDescendants = function(viewModelOrBindingContext, rootNode) {
          if (rootNode.nodeType === 1 || rootNode.nodeType === 8)
              applyBindingsToDescendantsInternal(getBindingContext(viewModelOrBindingContext), rootNode, true);
      };
  
      ko.applyBindings = function (viewModelOrBindingContext, rootNode) {
          // If jQuery is loaded after Knockout, we won't initially have access to it. So save it here.
          if (!jQueryInstance && window['jQuery']) {
              jQueryInstance = window['jQuery'];
          }
  
          if (rootNode && (rootNode.nodeType !== 1) && (rootNode.nodeType !== 8))
              throw new Error("ko.applyBindings: first parameter should be your view model; second parameter should be a DOM node");
          rootNode = rootNode || window.document.body; // Make "rootNode" parameter optional
  
          applyBindingsToNodeAndDescendantsInternal(getBindingContext(viewModelOrBindingContext), rootNode, true);
      };
  
      // Retrieving binding context from arbitrary nodes
      ko.contextFor = function(node) {
          // We can only do something meaningful for elements and comment nodes (in particular, not text nodes, as IE can't store domdata for them)
          switch (node.nodeType) {
              case 1:
              case 8:
                  var context = ko.storedBindingContextForNode(node);
                  if (context) return context;
                  if (node.parentNode) return ko.contextFor(node.parentNode);
                  break;
          }
          return undefined;
      };
      ko.dataFor = function(node) {
          var context = ko.contextFor(node);
          return context ? context['$data'] : undefined;
      };
  
      ko.exportSymbol('bindingHandlers', ko.bindingHandlers);
      ko.exportSymbol('applyBindings', ko.applyBindings);
      ko.exportSymbol('applyBindingsToDescendants', ko.applyBindingsToDescendants);
      ko.exportSymbol('applyBindingAccessorsToNode', ko.applyBindingAccessorsToNode);
      ko.exportSymbol('applyBindingsToNode', ko.applyBindingsToNode);
      ko.exportSymbol('contextFor', ko.contextFor);
      ko.exportSymbol('dataFor', ko.dataFor);
  })();
  (function(undefined) {
      var loadingSubscribablesCache = {}, // Tracks component loads that are currently in flight
          loadedDefinitionsCache = {};    // Tracks component loads that have already completed
  
      ko.components = {
          get: function(componentName, callback) {
              var cachedDefinition = getObjectOwnProperty(loadedDefinitionsCache, componentName);
              if (cachedDefinition) {
                  // It's already loaded and cached. Reuse the same definition object.
                  // Note that for API consistency, even cache hits complete asynchronously by default.
                  // You can bypass this by putting synchronous:true on your component config.
                  if (cachedDefinition.isSynchronousComponent) {
                      ko.dependencyDetection.ignore(function() { // See comment in loaderRegistryBehaviors.js for reasoning
                          callback(cachedDefinition.definition);
                      });
                  } else {
                      ko.tasks.schedule(function() { callback(cachedDefinition.definition); });
                  }
              } else {
                  // Join the loading process that is already underway, or start a new one.
                  loadComponentAndNotify(componentName, callback);
              }
          },
  
          clearCachedDefinition: function(componentName) {
              delete loadedDefinitionsCache[componentName];
          },
  
          _getFirstResultFromLoaders: getFirstResultFromLoaders
      };
  
      function getObjectOwnProperty(obj, propName) {
          return obj.hasOwnProperty(propName) ? obj[propName] : undefined;
      }
  
      function loadComponentAndNotify(componentName, callback) {
          var subscribable = getObjectOwnProperty(loadingSubscribablesCache, componentName),
              completedAsync;
          if (!subscribable) {
              // It's not started loading yet. Start loading, and when it's done, move it to loadedDefinitionsCache.
              subscribable = loadingSubscribablesCache[componentName] = new ko.subscribable();
              subscribable.subscribe(callback);
  
              beginLoadingComponent(componentName, function(definition, config) {
                  var isSynchronousComponent = !!(config && config['synchronous']);
                  loadedDefinitionsCache[componentName] = { definition: definition, isSynchronousComponent: isSynchronousComponent };
                  delete loadingSubscribablesCache[componentName];
  
                  // For API consistency, all loads complete asynchronously. However we want to avoid
                  // adding an extra task schedule if it's unnecessary (i.e., the completion is already
                  // async).
                  //
                  // You can bypass the 'always asynchronous' feature by putting the synchronous:true
                  // flag on your component configuration when you register it.
                  if (completedAsync || isSynchronousComponent) {
                      // Note that notifySubscribers ignores any dependencies read within the callback.
                      // See comment in loaderRegistryBehaviors.js for reasoning
                      subscribable['notifySubscribers'](definition);
                  } else {
                      ko.tasks.schedule(function() {
                          subscribable['notifySubscribers'](definition);
                      });
                  }
              });
              completedAsync = true;
          } else {
              subscribable.subscribe(callback);
          }
      }
  
      function beginLoadingComponent(componentName, callback) {
          getFirstResultFromLoaders('getConfig', [componentName], function(config) {
              if (config) {
                  // We have a config, so now load its definition
                  getFirstResultFromLoaders('loadComponent', [componentName, config], function(definition) {
                      callback(definition, config);
                  });
              } else {
                  // The component has no config - it's unknown to all the loaders.
                  // Note that this is not an error (e.g., a module loading error) - that would abort the
                  // process and this callback would not run. For this callback to run, all loaders must
                  // have confirmed they don't know about this component.
                  callback(null, null);
              }
          });
      }
  
      function getFirstResultFromLoaders(methodName, argsExceptCallback, callback, candidateLoaders) {
          // On the first call in the stack, start with the full set of loaders
          if (!candidateLoaders) {
              candidateLoaders = ko.components['loaders'].slice(0); // Use a copy, because we'll be mutating this array
          }
  
          // Try the next candidate
          var currentCandidateLoader = candidateLoaders.shift();
          if (currentCandidateLoader) {
              var methodInstance = currentCandidateLoader[methodName];
              if (methodInstance) {
                  var wasAborted = false,
                      synchronousReturnValue = methodInstance.apply(currentCandidateLoader, argsExceptCallback.concat(function(result) {
                          if (wasAborted) {
                              callback(null);
                          } else if (result !== null) {
                              // This candidate returned a value. Use it.
                              callback(result);
                          } else {
                              // Try the next candidate
                              getFirstResultFromLoaders(methodName, argsExceptCallback, callback, candidateLoaders);
                          }
                      }));
  
                  // Currently, loaders may not return anything synchronously. This leaves open the possibility
                  // that we'll extend the API to support synchronous return values in the future. It won't be
                  // a breaking change, because currently no loader is allowed to return anything except undefined.
                  if (synchronousReturnValue !== undefined) {
                      wasAborted = true;
  
                      // Method to suppress exceptions will remain undocumented. This is only to keep
                      // KO's specs running tidily, since we can observe the loading got aborted without
                      // having exceptions cluttering up the console too.
                      if (!currentCandidateLoader['suppressLoaderExceptions']) {
                          throw new Error('Component loaders must supply values by invoking the callback, not by returning values synchronously.');
                      }
                  }
              } else {
                  // This candidate doesn't have the relevant handler. Synchronously move on to the next one.
                  getFirstResultFromLoaders(methodName, argsExceptCallback, callback, candidateLoaders);
              }
          } else {
              // No candidates returned a value
              callback(null);
          }
      }
  
      // Reference the loaders via string name so it's possible for developers
      // to replace the whole array by assigning to ko.components.loaders
      ko.components['loaders'] = [];
  
      ko.exportSymbol('components', ko.components);
      ko.exportSymbol('components.get', ko.components.get);
      ko.exportSymbol('components.clearCachedDefinition', ko.components.clearCachedDefinition);
  })();
  (function(undefined) {
  
      // The default loader is responsible for two things:
      // 1. Maintaining the default in-memory registry of component configuration objects
      //    (i.e., the thing you're writing to when you call ko.components.register(someName, ...))
      // 2. Answering requests for components by fetching configuration objects
      //    from that default in-memory registry and resolving them into standard
      //    component definition objects (of the form { createViewModel: ..., template: ... })
      // Custom loaders may override either of these facilities, i.e.,
      // 1. To supply configuration objects from some other source (e.g., conventions)
      // 2. Or, to resolve configuration objects by loading viewmodels/templates via arbitrary logic.
  
      var defaultConfigRegistry = {};
  
      ko.components.register = function(componentName, config) {
          if (!config) {
              throw new Error('Invalid configuration for ' + componentName);
          }
  
          if (ko.components.isRegistered(componentName)) {
              throw new Error('Component ' + componentName + ' is already registered');
          }
  
          defaultConfigRegistry[componentName] = config;
      };
  
      ko.components.isRegistered = function(componentName) {
          return defaultConfigRegistry.hasOwnProperty(componentName);
      };
  
      ko.components.unregister = function(componentName) {
          delete defaultConfigRegistry[componentName];
          ko.components.clearCachedDefinition(componentName);
      };
  
      ko.components.defaultLoader = {
          'getConfig': function(componentName, callback) {
              var result = defaultConfigRegistry.hasOwnProperty(componentName)
                  ? defaultConfigRegistry[componentName]
                  : null;
              callback(result);
          },
  
          'loadComponent': function(componentName, config, callback) {
              var errorCallback = makeErrorCallback(componentName);
              possiblyGetConfigFromAmd(errorCallback, config, function(loadedConfig) {
                  resolveConfig(componentName, errorCallback, loadedConfig, callback);
              });
          },
  
          'loadTemplate': function(componentName, templateConfig, callback) {
              resolveTemplate(makeErrorCallback(componentName), templateConfig, callback);
          },
  
          'loadViewModel': function(componentName, viewModelConfig, callback) {
              resolveViewModel(makeErrorCallback(componentName), viewModelConfig, callback);
          }
      };
  
      var createViewModelKey = 'createViewModel';
  
      // Takes a config object of the form { template: ..., viewModel: ... }, and asynchronously convert it
      // into the standard component definition format:
      //    { template: <ArrayOfDomNodes>, createViewModel: function(params, componentInfo) { ... } }.
      // Since both template and viewModel may need to be resolved asynchronously, both tasks are performed
      // in parallel, and the results joined when both are ready. We don't depend on any promises infrastructure,
      // so this is implemented manually below.
      function resolveConfig(componentName, errorCallback, config, callback) {
          var result = {},
              makeCallBackWhenZero = 2,
              tryIssueCallback = function() {
                  if (--makeCallBackWhenZero === 0) {
                      callback(result);
                  }
              },
              templateConfig = config['template'],
              viewModelConfig = config['viewModel'];
  
          if (templateConfig) {
              possiblyGetConfigFromAmd(errorCallback, templateConfig, function(loadedConfig) {
                  ko.components._getFirstResultFromLoaders('loadTemplate', [componentName, loadedConfig], function(resolvedTemplate) {
                      result['template'] = resolvedTemplate;
                      tryIssueCallback();
                  });
              });
          } else {
              tryIssueCallback();
          }
  
          if (viewModelConfig) {
              possiblyGetConfigFromAmd(errorCallback, viewModelConfig, function(loadedConfig) {
                  ko.components._getFirstResultFromLoaders('loadViewModel', [componentName, loadedConfig], function(resolvedViewModel) {
                      result[createViewModelKey] = resolvedViewModel;
                      tryIssueCallback();
                  });
              });
          } else {
              tryIssueCallback();
          }
      }
  
      function resolveTemplate(errorCallback, templateConfig, callback) {
          if (typeof templateConfig === 'string') {
              // Markup - parse it
              callback(ko.utils.parseHtmlFragment(templateConfig));
          } else if (templateConfig instanceof Array) {
              // Assume already an array of DOM nodes - pass through unchanged
              callback(templateConfig);
          } else if (isDocumentFragment(templateConfig)) {
              // Document fragment - use its child nodes
              callback(ko.utils.makeArray(templateConfig.childNodes));
          } else if (templateConfig['element']) {
              var element = templateConfig['element'];
              if (isDomElement(element)) {
                  // Element instance - copy its child nodes
                  callback(cloneNodesFromTemplateSourceElement(element));
              } else if (typeof element === 'string') {
                  // Element ID - find it, then copy its child nodes
                  var elemInstance = document.getElementById(element);
                  if (elemInstance) {
                      callback(cloneNodesFromTemplateSourceElement(elemInstance));
                  } else {
                      errorCallback('Cannot find element with ID ' + element);
                  }
              } else {
                  errorCallback('Unknown element type: ' + element);
              }
          } else {
              errorCallback('Unknown template value: ' + templateConfig);
          }
      }
  
      function resolveViewModel(errorCallback, viewModelConfig, callback) {
          if (typeof viewModelConfig === 'function') {
              // Constructor - convert to standard factory function format
              // By design, this does *not* supply componentInfo to the constructor, as the intent is that
              // componentInfo contains non-viewmodel data (e.g., the component's element) that should only
              // be used in factory functions, not viewmodel constructors.
              callback(function (params /*, componentInfo */) {
                  return new viewModelConfig(params);
              });
          } else if (typeof viewModelConfig[createViewModelKey] === 'function') {
              // Already a factory function - use it as-is
              callback(viewModelConfig[createViewModelKey]);
          } else if ('instance' in viewModelConfig) {
              // Fixed object instance - promote to createViewModel format for API consistency
              var fixedInstance = viewModelConfig['instance'];
              callback(function (params, componentInfo) {
                  return fixedInstance;
              });
          } else if ('viewModel' in viewModelConfig) {
              // Resolved AMD module whose value is of the form { viewModel: ... }
              resolveViewModel(errorCallback, viewModelConfig['viewModel'], callback);
          } else {
              errorCallback('Unknown viewModel value: ' + viewModelConfig);
          }
      }
  
      function cloneNodesFromTemplateSourceElement(elemInstance) {
          switch (ko.utils.tagNameLower(elemInstance)) {
              case 'script':
                  return ko.utils.parseHtmlFragment(elemInstance.text);
              case 'textarea':
                  return ko.utils.parseHtmlFragment(elemInstance.value);
              case 'template':
                  // For browsers with proper <template> element support (i.e., where the .content property
                  // gives a document fragment), use that document fragment.
                  if (isDocumentFragment(elemInstance.content)) {
                      return ko.utils.cloneNodes(elemInstance.content.childNodes);
                  }
          }
  
          // Regular elements such as <div>, and <template> elements on old browsers that don't really
          // understand <template> and just treat it as a regular container
          return ko.utils.cloneNodes(elemInstance.childNodes);
      }
  
      function isDomElement(obj) {
          if (window['HTMLElement']) {
              return obj instanceof HTMLElement;
          } else {
              return obj && obj.tagName && obj.nodeType === 1;
          }
      }
  
      function isDocumentFragment(obj) {
          if (window['DocumentFragment']) {
              return obj instanceof DocumentFragment;
          } else {
              return obj && obj.nodeType === 11;
          }
      }
  
      function possiblyGetConfigFromAmd(errorCallback, config, callback) {
          if (typeof config['require'] === 'string') {
              // The config is the value of an AMD module
              if (amdRequire || window['require']) {
                  (amdRequire || window['require'])([config['require']], callback);
              } else {
                  errorCallback('Uses require, but no AMD loader is present');
              }
          } else {
              callback(config);
          }
      }
  
      function makeErrorCallback(componentName) {
          return function (message) {
              throw new Error('Component \'' + componentName + '\': ' + message);
          };
      }
  
      ko.exportSymbol('components.register', ko.components.register);
      ko.exportSymbol('components.isRegistered', ko.components.isRegistered);
      ko.exportSymbol('components.unregister', ko.components.unregister);
  
      // Expose the default loader so that developers can directly ask it for configuration
      // or to resolve configuration
      ko.exportSymbol('components.defaultLoader', ko.components.defaultLoader);
  
      // By default, the default loader is the only registered component loader
      ko.components['loaders'].push(ko.components.defaultLoader);
  
      // Privately expose the underlying config registry for use in old-IE shim
      ko.components._allRegisteredComponents = defaultConfigRegistry;
  })();
  (function (undefined) {
      // Overridable API for determining which component name applies to a given node. By overriding this,
      // you can for example map specific tagNames to components that are not preregistered.
      ko.components['getComponentNameForNode'] = function(node) {
          var tagNameLower = ko.utils.tagNameLower(node);
          if (ko.components.isRegistered(tagNameLower)) {
              // Try to determine that this node can be considered a *custom* element; see https://github.com/knockout/knockout/issues/1603
              if (tagNameLower.indexOf('-') != -1 || ('' + node) == "[object HTMLUnknownElement]" || (ko.utils.ieVersion <= 8 && node.tagName === tagNameLower)) {
                  return tagNameLower;
              }
          }
      };
  
      ko.components.addBindingsForCustomElement = function(allBindings, node, bindingContext, valueAccessors) {
          // Determine if it's really a custom element matching a component
          if (node.nodeType === 1) {
              var componentName = ko.components['getComponentNameForNode'](node);
              if (componentName) {
                  // It does represent a component, so add a component binding for it
                  allBindings = allBindings || {};
  
                  if (allBindings['component']) {
                      // Avoid silently overwriting some other 'component' binding that may already be on the element
                      throw new Error('Cannot use the "component" binding on a custom element matching a component');
                  }
  
                  var componentBindingValue = { 'name': componentName, 'params': getComponentParamsFromCustomElement(node, bindingContext) };
  
                  allBindings['component'] = valueAccessors
                      ? function() { return componentBindingValue; }
                      : componentBindingValue;
              }
          }
  
          return allBindings;
      }
  
      var nativeBindingProviderInstance = new ko.bindingProvider();
  
      function getComponentParamsFromCustomElement(elem, bindingContext) {
          var paramsAttribute = elem.getAttribute('params');
  
          if (paramsAttribute) {
              var params = nativeBindingProviderInstance['parseBindingsString'](paramsAttribute, bindingContext, elem, { 'valueAccessors': true, 'bindingParams': true }),
                  rawParamComputedValues = ko.utils.objectMap(params, function(paramValue, paramName) {
                      return ko.computed(paramValue, null, { disposeWhenNodeIsRemoved: elem });
                  }),
                  result = ko.utils.objectMap(rawParamComputedValues, function(paramValueComputed, paramName) {
                      var paramValue = paramValueComputed.peek();
                      // Does the evaluation of the parameter value unwrap any observables?
                      if (!paramValueComputed.isActive()) {
                          // No it doesn't, so there's no need for any computed wrapper. Just pass through the supplied value directly.
                          // Example: "someVal: firstName, age: 123" (whether or not firstName is an observable/computed)
                          return paramValue;
                      } else {
                          // Yes it does. Supply a computed property that unwraps both the outer (binding expression)
                          // level of observability, and any inner (resulting model value) level of observability.
                          // This means the component doesn't have to worry about multiple unwrapping. If the value is a
                          // writable observable, the computed will also be writable and pass the value on to the observable.
                          return ko.computed({
                              'read': function() {
                                  return ko.utils.unwrapObservable(paramValueComputed());
                              },
                              'write': ko.isWriteableObservable(paramValue) && function(value) {
                                  paramValueComputed()(value);
                              },
                              disposeWhenNodeIsRemoved: elem
                          });
                      }
                  });
  
              // Give access to the raw computeds, as long as that wouldn't overwrite any custom param also called '$raw'
              // This is in case the developer wants to react to outer (binding) observability separately from inner
              // (model value) observability, or in case the model value observable has subobservables.
              if (!result.hasOwnProperty('$raw')) {
                  result['$raw'] = rawParamComputedValues;
              }
  
              return result;
          } else {
              // For consistency, absence of a "params" attribute is treated the same as the presence of
              // any empty one. Otherwise component viewmodels need special code to check whether or not
              // 'params' or 'params.$raw' is null/undefined before reading subproperties, which is annoying.
              return { '$raw': {} };
          }
      }
  
      // --------------------------------------------------------------------------------
      // Compatibility code for older (pre-HTML5) IE browsers
  
      if (ko.utils.ieVersion < 9) {
          // Whenever you preregister a component, enable it as a custom element in the current document
          ko.components['register'] = (function(originalFunction) {
              return function(componentName) {
                  document.createElement(componentName); // Allows IE<9 to parse markup containing the custom element
                  return originalFunction.apply(this, arguments);
              }
          })(ko.components['register']);
  
          // Whenever you create a document fragment, enable all preregistered component names as custom elements
          // This is needed to make innerShiv/jQuery HTML parsing correctly handle the custom elements
          document.createDocumentFragment = (function(originalFunction) {
              return function() {
                  var newDocFrag = originalFunction(),
                      allComponents = ko.components._allRegisteredComponents;
                  for (var componentName in allComponents) {
                      if (allComponents.hasOwnProperty(componentName)) {
                          newDocFrag.createElement(componentName);
                      }
                  }
                  return newDocFrag;
              };
          })(document.createDocumentFragment);
      }
  })();(function(undefined) {
  
      var componentLoadingOperationUniqueId = 0;
  
      ko.bindingHandlers['component'] = {
          'init': function(element, valueAccessor, ignored1, ignored2, bindingContext) {
              var currentViewModel,
                  currentLoadingOperationId,
                  disposeAssociatedComponentViewModel = function () {
                      var currentViewModelDispose = currentViewModel && currentViewModel['dispose'];
                      if (typeof currentViewModelDispose === 'function') {
                          currentViewModelDispose.call(currentViewModel);
                      }
                      currentViewModel = null;
                      // Any in-flight loading operation is no longer relevant, so make sure we ignore its completion
                      currentLoadingOperationId = null;
                  },
                  originalChildNodes = ko.utils.makeArray(ko.virtualElements.childNodes(element));
  
              ko.utils.domNodeDisposal.addDisposeCallback(element, disposeAssociatedComponentViewModel);
  
              ko.computed(function () {
                  var value = ko.utils.unwrapObservable(valueAccessor()),
                      componentName, componentParams;
  
                  if (typeof value === 'string') {
                      componentName = value;
                  } else {
                      componentName = ko.utils.unwrapObservable(value['name']);
                      componentParams = ko.utils.unwrapObservable(value['params']);
                  }
  
                  if (!componentName) {
                      throw new Error('No component name specified');
                  }
  
                  var loadingOperationId = currentLoadingOperationId = ++componentLoadingOperationUniqueId;
                  ko.components.get(componentName, function(componentDefinition) {
                      // If this is not the current load operation for this element, ignore it.
                      if (currentLoadingOperationId !== loadingOperationId) {
                          return;
                      }
  
                      // Clean up previous state
                      disposeAssociatedComponentViewModel();
  
                      // Instantiate and bind new component. Implicitly this cleans any old DOM nodes.
                      if (!componentDefinition) {
                          throw new Error('Unknown component \'' + componentName + '\'');
                      }
                      cloneTemplateIntoElement(componentName, componentDefinition, element);
                      var componentViewModel = createViewModel(componentDefinition, element, originalChildNodes, componentParams),
                          childBindingContext = bindingContext['createChildContext'](componentViewModel, /* dataItemAlias */ undefined, function(ctx) {
                              ctx['$component'] = componentViewModel;
                              ctx['$componentTemplateNodes'] = originalChildNodes;
                          });
                      currentViewModel = componentViewModel;
                      ko.applyBindingsToDescendants(childBindingContext, element);
                  });
              }, null, { disposeWhenNodeIsRemoved: element });
  
              return { 'controlsDescendantBindings': true };
          }
      };
  
      ko.virtualElements.allowedBindings['component'] = true;
  
      function cloneTemplateIntoElement(componentName, componentDefinition, element) {
          var template = componentDefinition['template'];
          if (!template) {
              throw new Error('Component \'' + componentName + '\' has no template');
          }
  
          var clonedNodesArray = ko.utils.cloneNodes(template);
          ko.virtualElements.setDomNodeChildren(element, clonedNodesArray);
      }
  
      function createViewModel(componentDefinition, element, originalChildNodes, componentParams) {
          var componentViewModelFactory = componentDefinition['createViewModel'];
          return componentViewModelFactory
              ? componentViewModelFactory.call(componentDefinition, componentParams, { 'element': element, 'templateNodes': originalChildNodes })
              : componentParams; // Template-only component
      }
  
  })();
  var attrHtmlToJavascriptMap = { 'class': 'className', 'for': 'htmlFor' };
  ko.bindingHandlers['attr'] = {
      'update': function(element, valueAccessor, allBindings) {
          var value = ko.utils.unwrapObservable(valueAccessor()) || {};
          ko.utils.objectForEach(value, function(attrName, attrValue) {
              attrValue = ko.utils.unwrapObservable(attrValue);
  
              // To cover cases like "attr: { checked:someProp }", we want to remove the attribute entirely
              // when someProp is a "no value"-like value (strictly null, false, or undefined)
              // (because the absence of the "checked" attr is how to mark an element as not checked, etc.)
              var toRemove = (attrValue === false) || (attrValue === null) || (attrValue === undefined);
              if (toRemove)
                  element.removeAttribute(attrName);
  
              // In IE <= 7 and IE8 Quirks Mode, you have to use the Javascript property name instead of the
              // HTML attribute name for certain attributes. IE8 Standards Mode supports the correct behavior,
              // but instead of figuring out the mode, we'll just set the attribute through the Javascript
              // property for IE <= 8.
              if (ko.utils.ieVersion <= 8 && attrName in attrHtmlToJavascriptMap) {
                  attrName = attrHtmlToJavascriptMap[attrName];
                  if (toRemove)
                      element.removeAttribute(attrName);
                  else
                      element[attrName] = attrValue;
              } else if (!toRemove) {
                  element.setAttribute(attrName, attrValue.toString());
              }
  
              // Treat "name" specially - although you can think of it as an attribute, it also needs
              // special handling on older versions of IE (https://github.com/SteveSanderson/knockout/pull/333)
              // Deliberately being case-sensitive here because XHTML would regard "Name" as a different thing
              // entirely, and there's no strong reason to allow for such casing in HTML.
              if (attrName === "name") {
                  ko.utils.setElementName(element, toRemove ? "" : attrValue.toString());
              }
          });
      }
  };
  (function() {
  
  ko.bindingHandlers['checked'] = {
      'after': ['value', 'attr'],
      'init': function (element, valueAccessor, allBindings) {
          var checkedValue = ko.pureComputed(function() {
              // Treat "value" like "checkedValue" when it is included with "checked" binding
              if (allBindings['has']('checkedValue')) {
                  return ko.utils.unwrapObservable(allBindings.get('checkedValue'));
              } else if (allBindings['has']('value')) {
                  return ko.utils.unwrapObservable(allBindings.get('value'));
              }
  
              return element.value;
          });
  
          function updateModel() {
              // This updates the model value from the view value.
              // It runs in response to DOM events (click) and changes in checkedValue.
              var isChecked = element.checked,
                  elemValue = useCheckedValue ? checkedValue() : isChecked;
  
              // When we're first setting up this computed, don't change any model state.
              if (ko.computedContext.isInitial()) {
                  return;
              }
  
              // We can ignore unchecked radio buttons, because some other radio
              // button will be getting checked, and that one can take care of updating state.
              if (isRadio && !isChecked) {
                  return;
              }
  
              var modelValue = ko.dependencyDetection.ignore(valueAccessor);
              if (valueIsArray) {
                  var writableValue = rawValueIsNonArrayObservable ? modelValue.peek() : modelValue;
                  if (oldElemValue !== elemValue) {
                      // When we're responding to the checkedValue changing, and the element is
                      // currently checked, replace the old elem value with the new elem value
                      // in the model array.
                      if (isChecked) {
                          ko.utils.addOrRemoveItem(writableValue, elemValue, true);
                          ko.utils.addOrRemoveItem(writableValue, oldElemValue, false);
                      }
  
                      oldElemValue = elemValue;
                  } else {
                      // When we're responding to the user having checked/unchecked a checkbox,
                      // add/remove the element value to the model array.
                      ko.utils.addOrRemoveItem(writableValue, elemValue, isChecked);
                  }
                  if (rawValueIsNonArrayObservable && ko.isWriteableObservable(modelValue)) {
                      modelValue(writableValue);
                  }
              } else {
                  ko.expressionRewriting.writeValueToProperty(modelValue, allBindings, 'checked', elemValue, true);
              }
          };
  
          function updateView() {
              // This updates the view value from the model value.
              // It runs in response to changes in the bound (checked) value.
              var modelValue = ko.utils.unwrapObservable(valueAccessor());
  
              if (valueIsArray) {
                  // When a checkbox is bound to an array, being checked represents its value being present in that array
                  element.checked = ko.utils.arrayIndexOf(modelValue, checkedValue()) >= 0;
              } else if (isCheckbox) {
                  // When a checkbox is bound to any other value (not an array), being checked represents the value being trueish
                  element.checked = modelValue;
              } else {
                  // For radio buttons, being checked means that the radio button's value corresponds to the model value
                  element.checked = (checkedValue() === modelValue);
              }
          };
  
          var isCheckbox = element.type == "checkbox",
              isRadio = element.type == "radio";
  
          // Only bind to check boxes and radio buttons
          if (!isCheckbox && !isRadio) {
              return;
          }
  
          var rawValue = valueAccessor(),
              valueIsArray = isCheckbox && (ko.utils.unwrapObservable(rawValue) instanceof Array),
              rawValueIsNonArrayObservable = !(valueIsArray && rawValue.push && rawValue.splice),
              oldElemValue = valueIsArray ? checkedValue() : undefined,
              useCheckedValue = isRadio || valueIsArray;
  
          // IE 6 won't allow radio buttons to be selected unless they have a name
          if (isRadio && !element.name)
              ko.bindingHandlers['uniqueName']['init'](element, function() { return true });
  
          // Set up two computeds to update the binding:
  
          // The first responds to changes in the checkedValue value and to element clicks
          ko.computed(updateModel, null, { disposeWhenNodeIsRemoved: element });
          ko.utils.registerEventHandler(element, "click", updateModel);
  
          // The second responds to changes in the model value (the one associated with the checked binding)
          ko.computed(updateView, null, { disposeWhenNodeIsRemoved: element });
  
          rawValue = undefined;
      }
  };
  ko.expressionRewriting.twoWayBindings['checked'] = true;
  
  ko.bindingHandlers['checkedValue'] = {
      'update': function (element, valueAccessor) {
          element.value = ko.utils.unwrapObservable(valueAccessor());
      }
  };
  
  })();var classesWrittenByBindingKey = '__ko__cssValue';
  ko.bindingHandlers['css'] = {
      'update': function (element, valueAccessor) {
          var value = ko.utils.unwrapObservable(valueAccessor());
          if (value !== null && typeof value == "object") {
              ko.utils.objectForEach(value, function(className, shouldHaveClass) {
                  shouldHaveClass = ko.utils.unwrapObservable(shouldHaveClass);
                  ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
              });
          } else {
              value = ko.utils.stringTrim(String(value || '')); // Make sure we don't try to store or set a non-string value
              ko.utils.toggleDomNodeCssClass(element, element[classesWrittenByBindingKey], false);
              element[classesWrittenByBindingKey] = value;
              ko.utils.toggleDomNodeCssClass(element, value, true);
          }
      }
  };
  ko.bindingHandlers['enable'] = {
      'update': function (element, valueAccessor) {
          var value = ko.utils.unwrapObservable(valueAccessor());
          if (value && element.disabled)
              element.removeAttribute("disabled");
          else if ((!value) && (!element.disabled))
              element.disabled = true;
      }
  };
  
  ko.bindingHandlers['disable'] = {
      'update': function (element, valueAccessor) {
          ko.bindingHandlers['enable']['update'](element, function() { return !ko.utils.unwrapObservable(valueAccessor()) });
      }
  };
  // For certain common events (currently just 'click'), allow a simplified data-binding syntax
  // e.g. click:handler instead of the usual full-length event:{click:handler}
  function makeEventHandlerShortcut(eventName) {
      ko.bindingHandlers[eventName] = {
          'init': function(element, valueAccessor, allBindings, viewModel, bindingContext) {
              var newValueAccessor = function () {
                  var result = {};
                  result[eventName] = valueAccessor();
                  return result;
              };
              return ko.bindingHandlers['event']['init'].call(this, element, newValueAccessor, allBindings, viewModel, bindingContext);
          }
      }
  }
  
  ko.bindingHandlers['event'] = {
      'init' : function (element, valueAccessor, allBindings, viewModel, bindingContext) {
          var eventsToHandle = valueAccessor() || {};
          ko.utils.objectForEach(eventsToHandle, function(eventName) {
              if (typeof eventName == "string") {
                  ko.utils.registerEventHandler(element, eventName, function (event) {
                      var handlerReturnValue;
                      var handlerFunction = valueAccessor()[eventName];
                      if (!handlerFunction)
                          return;
  
                      try {
                          // Take all the event args, and prefix with the viewmodel
                          var argsForHandler = ko.utils.makeArray(arguments);
                          viewModel = bindingContext['$data'];
                          argsForHandler.unshift(viewModel);
                          handlerReturnValue = handlerFunction.apply(viewModel, argsForHandler);
                      } finally {
                          if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
                              if (event.preventDefault)
                                  event.preventDefault();
                              else
                                  event.returnValue = false;
                          }
                      }
  
                      var bubble = allBindings.get(eventName + 'Bubble') !== false;
                      if (!bubble) {
                          event.cancelBubble = true;
                          if (event.stopPropagation)
                              event.stopPropagation();
                      }
                  });
              }
          });
      }
  };
  // "foreach: someExpression" is equivalent to "template: { foreach: someExpression }"
  // "foreach: { data: someExpression, afterAdd: myfn }" is equivalent to "template: { foreach: someExpression, afterAdd: myfn }"
  ko.bindingHandlers['foreach'] = {
      makeTemplateValueAccessor: function(valueAccessor) {
          return function() {
              var modelValue = valueAccessor(),
                  unwrappedValue = ko.utils.peekObservable(modelValue);    // Unwrap without setting a dependency here
  
              // If unwrappedValue is the array, pass in the wrapped value on its own
              // The value will be unwrapped and tracked within the template binding
              // (See https://github.com/SteveSanderson/knockout/issues/523)
              if ((!unwrappedValue) || typeof unwrappedValue.length == "number")
                  return { 'foreach': modelValue, 'templateEngine': ko.nativeTemplateEngine.instance };
  
              // If unwrappedValue.data is the array, preserve all relevant options and unwrap again value so we get updates
              ko.utils.unwrapObservable(modelValue);
              return {
                  'foreach': unwrappedValue['data'],
                  'as': unwrappedValue['as'],
                  'includeDestroyed': unwrappedValue['includeDestroyed'],
                  'afterAdd': unwrappedValue['afterAdd'],
                  'beforeRemove': unwrappedValue['beforeRemove'],
                  'afterRender': unwrappedValue['afterRender'],
                  'beforeMove': unwrappedValue['beforeMove'],
                  'afterMove': unwrappedValue['afterMove'],
                  'templateEngine': ko.nativeTemplateEngine.instance
              };
          };
      },
      'init': function(element, valueAccessor, allBindings, viewModel, bindingContext) {
          return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor));
      },
      'update': function(element, valueAccessor, allBindings, viewModel, bindingContext) {
          return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor), allBindings, viewModel, bindingContext);
      }
  };
  ko.expressionRewriting.bindingRewriteValidators['foreach'] = false; // Can't rewrite control flow bindings
  ko.virtualElements.allowedBindings['foreach'] = true;
  var hasfocusUpdatingProperty = '__ko_hasfocusUpdating';
  var hasfocusLastValue = '__ko_hasfocusLastValue';
  ko.bindingHandlers['hasfocus'] = {
      'init': function(element, valueAccessor, allBindings) {
          var handleElementFocusChange = function(isFocused) {
              // Where possible, ignore which event was raised and determine focus state using activeElement,
              // as this avoids phantom focus/blur events raised when changing tabs in modern browsers.
              // However, not all KO-targeted browsers (Firefox 2) support activeElement. For those browsers,
              // prevent a loss of focus when changing tabs/windows by setting a flag that prevents hasfocus
              // from calling 'blur()' on the element when it loses focus.
              // Discussion at https://github.com/SteveSanderson/knockout/pull/352
              element[hasfocusUpdatingProperty] = true;
              var ownerDoc = element.ownerDocument;
              if ("activeElement" in ownerDoc) {
                  var active;
                  try {
                      active = ownerDoc.activeElement;
                  } catch(e) {
                      // IE9 throws if you access activeElement during page load (see issue #703)
                      active = ownerDoc.body;
                  }
                  isFocused = (active === element);
              }
              var modelValue = valueAccessor();
              ko.expressionRewriting.writeValueToProperty(modelValue, allBindings, 'hasfocus', isFocused, true);
  
              //cache the latest value, so we can avoid unnecessarily calling focus/blur in the update function
              element[hasfocusLastValue] = isFocused;
              element[hasfocusUpdatingProperty] = false;
          };
          var handleElementFocusIn = handleElementFocusChange.bind(null, true);
          var handleElementFocusOut = handleElementFocusChange.bind(null, false);
  
          ko.utils.registerEventHandler(element, "focus", handleElementFocusIn);
          ko.utils.registerEventHandler(element, "focusin", handleElementFocusIn); // For IE
          ko.utils.registerEventHandler(element, "blur",  handleElementFocusOut);
          ko.utils.registerEventHandler(element, "focusout",  handleElementFocusOut); // For IE
      },
      'update': function(element, valueAccessor) {
          var value = !!ko.utils.unwrapObservable(valueAccessor());
  
          if (!element[hasfocusUpdatingProperty] && element[hasfocusLastValue] !== value) {
              value ? element.focus() : element.blur();
  
              // In IE, the blur method doesn't always cause the element to lose focus (for example, if the window is not in focus).
              // Setting focus to the body element does seem to be reliable in IE, but should only be used if we know that the current
              // element was focused already.
              if (!value && element[hasfocusLastValue]) {
                  element.ownerDocument.body.focus();
              }
  
              // For IE, which doesn't reliably fire "focus" or "blur" events synchronously
              ko.dependencyDetection.ignore(ko.utils.triggerEvent, null, [element, value ? "focusin" : "focusout"]);
          }
      }
  };
  ko.expressionRewriting.twoWayBindings['hasfocus'] = true;
  
  ko.bindingHandlers['hasFocus'] = ko.bindingHandlers['hasfocus']; // Make "hasFocus" an alias
  ko.expressionRewriting.twoWayBindings['hasFocus'] = true;
  ko.bindingHandlers['html'] = {
      'init': function() {
          // Prevent binding on the dynamically-injected HTML (as developers are unlikely to expect that, and it has security implications)
          return { 'controlsDescendantBindings': true };
      },
      'update': function (element, valueAccessor) {
          // setHtml will unwrap the value if needed
          ko.utils.setHtml(element, valueAccessor());
      }
  };
  // Makes a binding like with or if
  function makeWithIfBinding(bindingKey, isWith, isNot, makeContextCallback) {
      ko.bindingHandlers[bindingKey] = {
          'init': function(element, valueAccessor, allBindings, viewModel, bindingContext) {
              var didDisplayOnLastUpdate,
                  savedNodes;
              ko.computed(function() {
                  var rawValue = valueAccessor(),
                      dataValue = ko.utils.unwrapObservable(rawValue),
                      shouldDisplay = !isNot !== !dataValue, // equivalent to isNot ? !dataValue : !!dataValue
                      isFirstRender = !savedNodes,
                      needsRefresh = isFirstRender || isWith || (shouldDisplay !== didDisplayOnLastUpdate);
  
                  if (needsRefresh) {
                      // Save a copy of the inner nodes on the initial update, but only if we have dependencies.
                      if (isFirstRender && ko.computedContext.getDependenciesCount()) {
                          savedNodes = ko.utils.cloneNodes(ko.virtualElements.childNodes(element), true /* shouldCleanNodes */);
                      }
  
                      if (shouldDisplay) {
                          if (!isFirstRender) {
                              ko.virtualElements.setDomNodeChildren(element, ko.utils.cloneNodes(savedNodes));
                          }
                          ko.applyBindingsToDescendants(makeContextCallback ? makeContextCallback(bindingContext, rawValue) : bindingContext, element);
                      } else {
                          ko.virtualElements.emptyNode(element);
                      }
  
                      didDisplayOnLastUpdate = shouldDisplay;
                  }
              }, null, { disposeWhenNodeIsRemoved: element });
              return { 'controlsDescendantBindings': true };
          }
      };
      ko.expressionRewriting.bindingRewriteValidators[bindingKey] = false; // Can't rewrite control flow bindings
      ko.virtualElements.allowedBindings[bindingKey] = true;
  }
  
  // Construct the actual binding handlers
  makeWithIfBinding('if');
  makeWithIfBinding('ifnot', false /* isWith */, true /* isNot */);
  makeWithIfBinding('with', true /* isWith */, false /* isNot */,
      function(bindingContext, dataValue) {
          return bindingContext.createStaticChildContext(dataValue);
      }
  );
  var captionPlaceholder = {};
  ko.bindingHandlers['options'] = {
      'init': function(element) {
          if (ko.utils.tagNameLower(element) !== "select")
              throw new Error("options binding applies only to SELECT elements");
  
          // Remove all existing <option>s.
          while (element.length > 0) {
              element.remove(0);
          }
  
          // Ensures that the binding processor doesn't try to bind the options
          return { 'controlsDescendantBindings': true };
      },
      'update': function (element, valueAccessor, allBindings) {
          function selectedOptions() {
              return ko.utils.arrayFilter(element.options, function (node) { return node.selected; });
          }
  
          var selectWasPreviouslyEmpty = element.length == 0,
              multiple = element.multiple,
              previousScrollTop = (!selectWasPreviouslyEmpty && multiple) ? element.scrollTop : null,
              unwrappedArray = ko.utils.unwrapObservable(valueAccessor()),
              valueAllowUnset = allBindings.get('valueAllowUnset') && allBindings['has']('value'),
              includeDestroyed = allBindings.get('optionsIncludeDestroyed'),
              arrayToDomNodeChildrenOptions = {},
              captionValue,
              filteredArray,
              previousSelectedValues = [];
  
          if (!valueAllowUnset) {
              if (multiple) {
                  previousSelectedValues = ko.utils.arrayMap(selectedOptions(), ko.selectExtensions.readValue);
              } else if (element.selectedIndex >= 0) {
                  previousSelectedValues.push(ko.selectExtensions.readValue(element.options[element.selectedIndex]));
              }
          }
  
          if (unwrappedArray) {
              if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
                  unwrappedArray = [unwrappedArray];
  
              // Filter out any entries marked as destroyed
              filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {
                  return includeDestroyed || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);
              });
  
              // If caption is included, add it to the array
              if (allBindings['has']('optionsCaption')) {
                  captionValue = ko.utils.unwrapObservable(allBindings.get('optionsCaption'));
                  // If caption value is null or undefined, don't show a caption
                  if (captionValue !== null && captionValue !== undefined) {
                      filteredArray.unshift(captionPlaceholder);
                  }
              }
          } else {
              // If a falsy value is provided (e.g. null), we'll simply empty the select element
          }
  
          function applyToObject(object, predicate, defaultValue) {
              var predicateType = typeof predicate;
              if (predicateType == "function")    // Given a function; run it against the data value
                  return predicate(object);
              else if (predicateType == "string") // Given a string; treat it as a property name on the data value
                  return object[predicate];
              else                                // Given no optionsText arg; use the data value itself
                  return defaultValue;
          }
  
          // The following functions can run at two different times:
          // The first is when the whole array is being updated directly from this binding handler.
          // The second is when an observable value for a specific array entry is updated.
          // oldOptions will be empty in the first case, but will be filled with the previously generated option in the second.
          var itemUpdate = false;
          function optionForArrayItem(arrayEntry, index, oldOptions) {
              if (oldOptions.length) {
                  previousSelectedValues = !valueAllowUnset && oldOptions[0].selected ? [ ko.selectExtensions.readValue(oldOptions[0]) ] : [];
                  itemUpdate = true;
              }
              var option = element.ownerDocument.createElement("option");
              if (arrayEntry === captionPlaceholder) {
                  ko.utils.setTextContent(option, allBindings.get('optionsCaption'));
                  ko.selectExtensions.writeValue(option, undefined);
              } else {
                  // Apply a value to the option element
                  var optionValue = applyToObject(arrayEntry, allBindings.get('optionsValue'), arrayEntry);
                  ko.selectExtensions.writeValue(option, ko.utils.unwrapObservable(optionValue));
  
                  // Apply some text to the option element
                  var optionText = applyToObject(arrayEntry, allBindings.get('optionsText'), optionValue);
                  ko.utils.setTextContent(option, optionText);
              }
              return [option];
          }
  
          // By using a beforeRemove callback, we delay the removal until after new items are added. This fixes a selection
          // problem in IE<=8 and Firefox. See https://github.com/knockout/knockout/issues/1208
          arrayToDomNodeChildrenOptions['beforeRemove'] =
              function (option) {
                  element.removeChild(option);
              };
  
          function setSelectionCallback(arrayEntry, newOptions) {
              if (itemUpdate && valueAllowUnset) {
                  // The model value is authoritative, so make sure its value is the one selected
                  // There is no need to use dependencyDetection.ignore since setDomNodeChildrenFromArrayMapping does so already.
                  ko.selectExtensions.writeValue(element, ko.utils.unwrapObservable(allBindings.get('value')), true /* allowUnset */);
              } else if (previousSelectedValues.length) {
                  // IE6 doesn't like us to assign selection to OPTION nodes before they're added to the document.
                  // That's why we first added them without selection. Now it's time to set the selection.
                  var isSelected = ko.utils.arrayIndexOf(previousSelectedValues, ko.selectExtensions.readValue(newOptions[0])) >= 0;
                  ko.utils.setOptionNodeSelectionState(newOptions[0], isSelected);
  
                  // If this option was changed from being selected during a single-item update, notify the change
                  if (itemUpdate && !isSelected) {
                      ko.dependencyDetection.ignore(ko.utils.triggerEvent, null, [element, "change"]);
                  }
              }
          }
  
          var callback = setSelectionCallback;
          if (allBindings['has']('optionsAfterRender') && typeof allBindings.get('optionsAfterRender') == "function") {
              callback = function(arrayEntry, newOptions) {
                  setSelectionCallback(arrayEntry, newOptions);
                  ko.dependencyDetection.ignore(allBindings.get('optionsAfterRender'), null, [newOptions[0], arrayEntry !== captionPlaceholder ? arrayEntry : undefined]);
              }
          }
  
          ko.utils.setDomNodeChildrenFromArrayMapping(element, filteredArray, optionForArrayItem, arrayToDomNodeChildrenOptions, callback);
  
          ko.dependencyDetection.ignore(function () {
              if (valueAllowUnset) {
                  // The model value is authoritative, so make sure its value is the one selected
                  ko.selectExtensions.writeValue(element, ko.utils.unwrapObservable(allBindings.get('value')), true /* allowUnset */);
              } else {
                  // Determine if the selection has changed as a result of updating the options list
                  var selectionChanged;
                  if (multiple) {
                      // For a multiple-select box, compare the new selection count to the previous one
                      // But if nothing was selected before, the selection can't have changed
                      selectionChanged = previousSelectedValues.length && selectedOptions().length < previousSelectedValues.length;
                  } else {
                      // For a single-select box, compare the current value to the previous value
                      // But if nothing was selected before or nothing is selected now, just look for a change in selection
                      selectionChanged = (previousSelectedValues.length && element.selectedIndex >= 0)
                          ? (ko.selectExtensions.readValue(element.options[element.selectedIndex]) !== previousSelectedValues[0])
                          : (previousSelectedValues.length || element.selectedIndex >= 0);
                  }
  
                  // Ensure consistency between model value and selected option.
                  // If the dropdown was changed so that selection is no longer the same,
                  // notify the value or selectedOptions binding.
                  if (selectionChanged) {
                      ko.utils.triggerEvent(element, "change");
                  }
              }
          });
  
          // Workaround for IE bug
          ko.utils.ensureSelectElementIsRenderedCorrectly(element);
  
          if (previousScrollTop && Math.abs(previousScrollTop - element.scrollTop) > 20)
              element.scrollTop = previousScrollTop;
      }
  };
  ko.bindingHandlers['options'].optionValueDomDataKey = ko.utils.domData.nextKey();
  ko.bindingHandlers['selectedOptions'] = {
      'after': ['options', 'foreach'],
      'init': function (element, valueAccessor, allBindings) {
          ko.utils.registerEventHandler(element, "change", function () {
              var value = valueAccessor(), valueToWrite = [];
              ko.utils.arrayForEach(element.getElementsByTagName("option"), function(node) {
                  if (node.selected)
                      valueToWrite.push(ko.selectExtensions.readValue(node));
              });
              ko.expressionRewriting.writeValueToProperty(value, allBindings, 'selectedOptions', valueToWrite);
          });
      },
      'update': function (element, valueAccessor) {
          if (ko.utils.tagNameLower(element) != "select")
              throw new Error("values binding applies only to SELECT elements");
  
          var newValue = ko.utils.unwrapObservable(valueAccessor()),
              previousScrollTop = element.scrollTop;
  
          if (newValue && typeof newValue.length == "number") {
              ko.utils.arrayForEach(element.getElementsByTagName("option"), function(node) {
                  var isSelected = ko.utils.arrayIndexOf(newValue, ko.selectExtensions.readValue(node)) >= 0;
                  if (node.selected != isSelected) {      // This check prevents flashing of the select element in IE
                      ko.utils.setOptionNodeSelectionState(node, isSelected);
                  }
              });
          }
  
          element.scrollTop = previousScrollTop;
      }
  };
  ko.expressionRewriting.twoWayBindings['selectedOptions'] = true;
  ko.bindingHandlers['style'] = {
      'update': function (element, valueAccessor) {
          var value = ko.utils.unwrapObservable(valueAccessor() || {});
          ko.utils.objectForEach(value, function(styleName, styleValue) {
              styleValue = ko.utils.unwrapObservable(styleValue);
  
              if (styleValue === null || styleValue === undefined || styleValue === false) {
                  // Empty string removes the value, whereas null/undefined have no effect
                  styleValue = "";
              }
  
              element.style[styleName] = styleValue;
          });
      }
  };
  ko.bindingHandlers['submit'] = {
      'init': function (element, valueAccessor, allBindings, viewModel, bindingContext) {
          if (typeof valueAccessor() != "function")
              throw new Error("The value for a submit binding must be a function");
          ko.utils.registerEventHandler(element, "submit", function (event) {
              var handlerReturnValue;
              var value = valueAccessor();
              try { handlerReturnValue = value.call(bindingContext['$data'], element); }
              finally {
                  if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
                      if (event.preventDefault)
                          event.preventDefault();
                      else
                          event.returnValue = false;
                  }
              }
          });
      }
  };
  ko.bindingHandlers['text'] = {
      'init': function() {
          // Prevent binding on the dynamically-injected text node (as developers are unlikely to expect that, and it has security implications).
          // It should also make things faster, as we no longer have to consider whether the text node might be bindable.
          return { 'controlsDescendantBindings': true };
      },
      'update': function (element, valueAccessor) {
          ko.utils.setTextContent(element, valueAccessor());
      }
  };
  ko.virtualElements.allowedBindings['text'] = true;
  (function () {
  
  if (window && window.navigator) {
      var parseVersion = function (matches) {
          if (matches) {
              return parseFloat(matches[1]);
          }
      };
  
      // Detect various browser versions because some old versions don't fully support the 'input' event
      var operaVersion = window.opera && window.opera.version && parseInt(window.opera.version()),
          userAgent = window.navigator.userAgent,
          safariVersion = parseVersion(userAgent.match(/^(?:(?!chrome).)*version\/([^ ]*) safari/i)),
          firefoxVersion = parseVersion(userAgent.match(/Firefox\/([^ ]*)/));
  }
  
  // IE 8 and 9 have bugs that prevent the normal events from firing when the value changes.
  // But it does fire the 'selectionchange' event on many of those, presumably because the
  // cursor is moving and that counts as the selection changing. The 'selectionchange' event is
  // fired at the document level only and doesn't directly indicate which element changed. We
  // set up just one event handler for the document and use 'activeElement' to determine which
  // element was changed.
  if (ko.utils.ieVersion < 10) {
      var selectionChangeRegisteredName = ko.utils.domData.nextKey(),
          selectionChangeHandlerName = ko.utils.domData.nextKey();
      var selectionChangeHandler = function(event) {
          var target = this.activeElement,
              handler = target && ko.utils.domData.get(target, selectionChangeHandlerName);
          if (handler) {
              handler(event);
          }
      };
      var registerForSelectionChangeEvent = function (element, handler) {
          var ownerDoc = element.ownerDocument;
          if (!ko.utils.domData.get(ownerDoc, selectionChangeRegisteredName)) {
              ko.utils.domData.set(ownerDoc, selectionChangeRegisteredName, true);
              ko.utils.registerEventHandler(ownerDoc, 'selectionchange', selectionChangeHandler);
          }
          ko.utils.domData.set(element, selectionChangeHandlerName, handler);
      };
  }
  
  ko.bindingHandlers['textInput'] = {
      'init': function (element, valueAccessor, allBindings) {
  
          var previousElementValue = element.value,
              timeoutHandle,
              elementValueBeforeEvent;
  
          var updateModel = function (event) {
              clearTimeout(timeoutHandle);
              elementValueBeforeEvent = timeoutHandle = undefined;
  
              var elementValue = element.value;
              if (previousElementValue !== elementValue) {
                  // Provide a way for tests to know exactly which event was processed
                  if (DEBUG && event) element['_ko_textInputProcessedEvent'] = event.type;
                  previousElementValue = elementValue;
                  ko.expressionRewriting.writeValueToProperty(valueAccessor(), allBindings, 'textInput', elementValue);
              }
          };
  
          var deferUpdateModel = function (event) {
              if (!timeoutHandle) {
                  // The elementValueBeforeEvent variable is set *only* during the brief gap between an
                  // event firing and the updateModel function running. This allows us to ignore model
                  // updates that are from the previous state of the element, usually due to techniques
                  // such as rateLimit. Such updates, if not ignored, can cause keystrokes to be lost.
                  elementValueBeforeEvent = element.value;
                  var handler = DEBUG ? updateModel.bind(element, {type: event.type}) : updateModel;
                  timeoutHandle = ko.utils.setTimeout(handler, 4);
              }
          };
  
          // IE9 will mess up the DOM if you handle events synchronously which results in DOM changes (such as other bindings);
          // so we'll make sure all updates are asynchronous
          var ieUpdateModel = ko.utils.ieVersion == 9 ? deferUpdateModel : updateModel;
  
          var updateView = function () {
              var modelValue = ko.utils.unwrapObservable(valueAccessor());
  
              if (modelValue === null || modelValue === undefined) {
                  modelValue = '';
              }
  
              if (elementValueBeforeEvent !== undefined && modelValue === elementValueBeforeEvent) {
                  ko.utils.setTimeout(updateView, 4);
                  return;
              }
  
              // Update the element only if the element and model are different. On some browsers, updating the value
              // will move the cursor to the end of the input, which would be bad while the user is typing.
              if (element.value !== modelValue) {
                  previousElementValue = modelValue;  // Make sure we ignore events (propertychange) that result from updating the value
                  element.value = modelValue;
              }
          };
  
          var onEvent = function (event, handler) {
              ko.utils.registerEventHandler(element, event, handler);
          };
  
          if (DEBUG && ko.bindingHandlers['textInput']['_forceUpdateOn']) {
              // Provide a way for tests to specify exactly which events are bound
              ko.utils.arrayForEach(ko.bindingHandlers['textInput']['_forceUpdateOn'], function(eventName) {
                  if (eventName.slice(0,5) == 'after') {
                      onEvent(eventName.slice(5), deferUpdateModel);
                  } else {
                      onEvent(eventName, updateModel);
                  }
              });
          } else {
              if (ko.utils.ieVersion < 10) {
                  // Internet Explorer <= 8 doesn't support the 'input' event, but does include 'propertychange' that fires whenever
                  // any property of an element changes. Unlike 'input', it also fires if a property is changed from JavaScript code,
                  // but that's an acceptable compromise for this binding. IE 9 does support 'input', but since it doesn't fire it
                  // when using autocomplete, we'll use 'propertychange' for it also.
                  onEvent('propertychange', function(event) {
                      if (event.propertyName === 'value') {
                          ieUpdateModel(event);
                      }
                  });
  
                  if (ko.utils.ieVersion == 8) {
                      // IE 8 has a bug where it fails to fire 'propertychange' on the first update following a value change from
                      // JavaScript code. It also doesn't fire if you clear the entire value. To fix this, we bind to the following
                      // events too.
                      onEvent('keyup', updateModel);      // A single keystoke
                      onEvent('keydown', updateModel);    // The first character when a key is held down
                  }
                  if (ko.utils.ieVersion >= 8) {
                      // Internet Explorer 9 doesn't fire the 'input' event when deleting text, including using
                      // the backspace, delete, or ctrl-x keys, clicking the 'x' to clear the input, dragging text
                      // out of the field, and cutting or deleting text using the context menu. 'selectionchange'
                      // can detect all of those except dragging text out of the field, for which we use 'dragend'.
                      // These are also needed in IE8 because of the bug described above.
                      registerForSelectionChangeEvent(element, ieUpdateModel);  // 'selectionchange' covers cut, paste, drop, delete, etc.
                      onEvent('dragend', deferUpdateModel);
                  }
              } else {
                  // All other supported browsers support the 'input' event, which fires whenever the content of the element is changed
                  // through the user interface.
                  onEvent('input', updateModel);
  
                  if (safariVersion < 5 && ko.utils.tagNameLower(element) === "textarea") {
                      // Safari <5 doesn't fire the 'input' event for <textarea> elements (it does fire 'textInput'
                      // but only when typing). So we'll just catch as much as we can with keydown, cut, and paste.
                      onEvent('keydown', deferUpdateModel);
                      onEvent('paste', deferUpdateModel);
                      onEvent('cut', deferUpdateModel);
                  } else if (operaVersion < 11) {
                      // Opera 10 doesn't always fire the 'input' event for cut, paste, undo & drop operations.
                      // We can try to catch some of those using 'keydown'.
                      onEvent('keydown', deferUpdateModel);
                  } else if (firefoxVersion < 4.0) {
                      // Firefox <= 3.6 doesn't fire the 'input' event when text is filled in through autocomplete
                      onEvent('DOMAutoComplete', updateModel);
  
                      // Firefox <=3.5 doesn't fire the 'input' event when text is dropped into the input.
                      onEvent('dragdrop', updateModel);       // <3.5
                      onEvent('drop', updateModel);           // 3.5
                  }
              }
          }
  
          // Bind to the change event so that we can catch programmatic updates of the value that fire this event.
          onEvent('change', updateModel);
  
          ko.computed(updateView, null, { disposeWhenNodeIsRemoved: element });
      }
  };
  ko.expressionRewriting.twoWayBindings['textInput'] = true;
  
  // textinput is an alias for textInput
  ko.bindingHandlers['textinput'] = {
      // preprocess is the only way to set up a full alias
      'preprocess': function (value, name, addBinding) {
          addBinding('textInput', value);
      }
  };
  
  })();ko.bindingHandlers['uniqueName'] = {
      'init': function (element, valueAccessor) {
          if (valueAccessor()) {
              var name = "ko_unique_" + (++ko.bindingHandlers['uniqueName'].currentIndex);
              ko.utils.setElementName(element, name);
          }
      }
  };
  ko.bindingHandlers['uniqueName'].currentIndex = 0;
  ko.bindingHandlers['value'] = {
      'after': ['options', 'foreach'],
      'init': function (element, valueAccessor, allBindings) {
          // If the value binding is placed on a radio/checkbox, then just pass through to checkedValue and quit
          if (element.tagName.toLowerCase() == "input" && (element.type == "checkbox" || element.type == "radio")) {
              ko.applyBindingAccessorsToNode(element, { 'checkedValue': valueAccessor });
              return;
          }
  
          // Always catch "change" event; possibly other events too if asked
          var eventsToCatch = ["change"];
          var requestedEventsToCatch = allBindings.get("valueUpdate");
          var propertyChangedFired = false;
          var elementValueBeforeEvent = null;
  
          if (requestedEventsToCatch) {
              if (typeof requestedEventsToCatch == "string") // Allow both individual event names, and arrays of event names
                  requestedEventsToCatch = [requestedEventsToCatch];
              ko.utils.arrayPushAll(eventsToCatch, requestedEventsToCatch);
              eventsToCatch = ko.utils.arrayGetDistinctValues(eventsToCatch);
          }
  
          var valueUpdateHandler = function() {
              elementValueBeforeEvent = null;
              propertyChangedFired = false;
              var modelValue = valueAccessor();
              var elementValue = ko.selectExtensions.readValue(element);
              ko.expressionRewriting.writeValueToProperty(modelValue, allBindings, 'value', elementValue);
          }
  
          // Workaround for https://github.com/SteveSanderson/knockout/issues/122
          // IE doesn't fire "change" events on textboxes if the user selects a value from its autocomplete list
          var ieAutoCompleteHackNeeded = ko.utils.ieVersion && element.tagName.toLowerCase() == "input" && element.type == "text"
                                         && element.autocomplete != "off" && (!element.form || element.form.autocomplete != "off");
          if (ieAutoCompleteHackNeeded && ko.utils.arrayIndexOf(eventsToCatch, "propertychange") == -1) {
              ko.utils.registerEventHandler(element, "propertychange", function () { propertyChangedFired = true });
              ko.utils.registerEventHandler(element, "focus", function () { propertyChangedFired = false });
              ko.utils.registerEventHandler(element, "blur", function() {
                  if (propertyChangedFired) {
                      valueUpdateHandler();
                  }
              });
          }
  
          ko.utils.arrayForEach(eventsToCatch, function(eventName) {
              // The syntax "after<eventname>" means "run the handler asynchronously after the event"
              // This is useful, for example, to catch "keydown" events after the browser has updated the control
              // (otherwise, ko.selectExtensions.readValue(this) will receive the control's value *before* the key event)
              var handler = valueUpdateHandler;
              if (ko.utils.stringStartsWith(eventName, "after")) {
                  handler = function() {
                      // The elementValueBeforeEvent variable is non-null *only* during the brief gap between
                      // a keyX event firing and the valueUpdateHandler running, which is scheduled to happen
                      // at the earliest asynchronous opportunity. We store this temporary information so that
                      // if, between keyX and valueUpdateHandler, the underlying model value changes separately,
                      // we can overwrite that model value change with the value the user just typed. Otherwise,
                      // techniques like rateLimit can trigger model changes at critical moments that will
                      // override the user's inputs, causing keystrokes to be lost.
                      elementValueBeforeEvent = ko.selectExtensions.readValue(element);
                      ko.utils.setTimeout(valueUpdateHandler, 0);
                  };
                  eventName = eventName.substring("after".length);
              }
              ko.utils.registerEventHandler(element, eventName, handler);
          });
  
          var updateFromModel = function () {
              var newValue = ko.utils.unwrapObservable(valueAccessor());
              var elementValue = ko.selectExtensions.readValue(element);
  
              if (elementValueBeforeEvent !== null && newValue === elementValueBeforeEvent) {
                  ko.utils.setTimeout(updateFromModel, 0);
                  return;
              }
  
              var valueHasChanged = (newValue !== elementValue);
  
              if (valueHasChanged) {
                  if (ko.utils.tagNameLower(element) === "select") {
                      var allowUnset = allBindings.get('valueAllowUnset');
                      var applyValueAction = function () {
                          ko.selectExtensions.writeValue(element, newValue, allowUnset);
                      };
                      applyValueAction();
  
                      if (!allowUnset && newValue !== ko.selectExtensions.readValue(element)) {
                          // If you try to set a model value that can't be represented in an already-populated dropdown, reject that change,
                          // because you're not allowed to have a model value that disagrees with a visible UI selection.
                          ko.dependencyDetection.ignore(ko.utils.triggerEvent, null, [element, "change"]);
                      } else {
                          // Workaround for IE6 bug: It won't reliably apply values to SELECT nodes during the same execution thread
                          // right after you've changed the set of OPTION nodes on it. So for that node type, we'll schedule a second thread
                          // to apply the value as well.
                          ko.utils.setTimeout(applyValueAction, 0);
                      }
                  } else {
                      ko.selectExtensions.writeValue(element, newValue);
                  }
              }
          };
  
          ko.computed(updateFromModel, null, { disposeWhenNodeIsRemoved: element });
      },
      'update': function() {} // Keep for backwards compatibility with code that may have wrapped value binding
  };
  ko.expressionRewriting.twoWayBindings['value'] = true;
  ko.bindingHandlers['visible'] = {
      'update': function (element, valueAccessor) {
          var value = ko.utils.unwrapObservable(valueAccessor());
          var isCurrentlyVisible = !(element.style.display == "none");
          if (value && !isCurrentlyVisible)
              element.style.display = "";
          else if ((!value) && isCurrentlyVisible)
              element.style.display = "none";
      }
  };
  // 'click' is just a shorthand for the usual full-length event:{click:handler}
  makeEventHandlerShortcut('click');
  // If you want to make a custom template engine,
  //
  // [1] Inherit from this class (like ko.nativeTemplateEngine does)
  // [2] Override 'renderTemplateSource', supplying a function with this signature:
  //
  //        function (templateSource, bindingContext, options) {
  //            // - templateSource.text() is the text of the template you should render
  //            // - bindingContext.$data is the data you should pass into the template
  //            //   - you might also want to make bindingContext.$parent, bindingContext.$parents,
  //            //     and bindingContext.$root available in the template too
  //            // - options gives you access to any other properties set on "data-bind: { template: options }"
  //            // - templateDocument is the document object of the template
  //            //
  //            // Return value: an array of DOM nodes
  //        }
  //
  // [3] Override 'createJavaScriptEvaluatorBlock', supplying a function with this signature:
  //
  //        function (script) {
  //            // Return value: Whatever syntax means "Evaluate the JavaScript statement 'script' and output the result"
  //            //               For example, the jquery.tmpl template engine converts 'someScript' to '${ someScript }'
  //        }
  //
  //     This is only necessary if you want to allow data-bind attributes to reference arbitrary template variables.
  //     If you don't want to allow that, you can set the property 'allowTemplateRewriting' to false (like ko.nativeTemplateEngine does)
  //     and then you don't need to override 'createJavaScriptEvaluatorBlock'.
  
  ko.templateEngine = function () { };
  
  ko.templateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options, templateDocument) {
      throw new Error("Override renderTemplateSource");
  };
  
  ko.templateEngine.prototype['createJavaScriptEvaluatorBlock'] = function (script) {
      throw new Error("Override createJavaScriptEvaluatorBlock");
  };
  
  ko.templateEngine.prototype['makeTemplateSource'] = function(template, templateDocument) {
      // Named template
      if (typeof template == "string") {
          templateDocument = templateDocument || document;
          var elem = templateDocument.getElementById(template);
          if (!elem)
              throw new Error("Cannot find template with ID " + template);
          return new ko.templateSources.domElement(elem);
      } else if ((template.nodeType == 1) || (template.nodeType == 8)) {
          // Anonymous template
          return new ko.templateSources.anonymousTemplate(template);
      } else
          throw new Error("Unknown template type: " + template);
  };
  
  ko.templateEngine.prototype['renderTemplate'] = function (template, bindingContext, options, templateDocument) {
      var templateSource = this['makeTemplateSource'](template, templateDocument);
      return this['renderTemplateSource'](templateSource, bindingContext, options, templateDocument);
  };
  
  ko.templateEngine.prototype['isTemplateRewritten'] = function (template, templateDocument) {
      // Skip rewriting if requested
      if (this['allowTemplateRewriting'] === false)
          return true;
      return this['makeTemplateSource'](template, templateDocument)['data']("isRewritten");
  };
  
  ko.templateEngine.prototype['rewriteTemplate'] = function (template, rewriterCallback, templateDocument) {
      var templateSource = this['makeTemplateSource'](template, templateDocument);
      var rewritten = rewriterCallback(templateSource['text']());
      templateSource['text'](rewritten);
      templateSource['data']("isRewritten", true);
  };
  
  ko.exportSymbol('templateEngine', ko.templateEngine);
  
  ko.templateRewriting = (function () {
      var memoizeDataBindingAttributeSyntaxRegex = /(<([a-z]+\d*)(?:\s+(?!data-bind\s*=\s*)[a-z0-9\-]+(?:=(?:\"[^\"]*\"|\'[^\']*\'|[^>]*))?)*\s+)data-bind\s*=\s*(["'])([\s\S]*?)\3/gi;
      var memoizeVirtualContainerBindingSyntaxRegex = /<!--\s*ko\b\s*([\s\S]*?)\s*-->/g;
  
      function validateDataBindValuesForRewriting(keyValueArray) {
          var allValidators = ko.expressionRewriting.bindingRewriteValidators;
          for (var i = 0; i < keyValueArray.length; i++) {
              var key = keyValueArray[i]['key'];
              if (allValidators.hasOwnProperty(key)) {
                  var validator = allValidators[key];
  
                  if (typeof validator === "function") {
                      var possibleErrorMessage = validator(keyValueArray[i]['value']);
                      if (possibleErrorMessage)
                          throw new Error(possibleErrorMessage);
                  } else if (!validator) {
                      throw new Error("This template engine does not support the '" + key + "' binding within its templates");
                  }
              }
          }
      }
  
      function constructMemoizedTagReplacement(dataBindAttributeValue, tagToRetain, nodeName, templateEngine) {
          var dataBindKeyValueArray = ko.expressionRewriting.parseObjectLiteral(dataBindAttributeValue);
          validateDataBindValuesForRewriting(dataBindKeyValueArray);
          var rewrittenDataBindAttributeValue = ko.expressionRewriting.preProcessBindings(dataBindKeyValueArray, {'valueAccessors':true});
  
          // For no obvious reason, Opera fails to evaluate rewrittenDataBindAttributeValue unless it's wrapped in an additional
          // anonymous function, even though Opera's built-in debugger can evaluate it anyway. No other browser requires this
          // extra indirection.
          var applyBindingsToNextSiblingScript =
              "ko.__tr_ambtns(function($context,$element){return(function(){return{ " + rewrittenDataBindAttributeValue + " } })()},'" + nodeName.toLowerCase() + "')";
          return templateEngine['createJavaScriptEvaluatorBlock'](applyBindingsToNextSiblingScript) + tagToRetain;
      }
  
      return {
          ensureTemplateIsRewritten: function (template, templateEngine, templateDocument) {
              if (!templateEngine['isTemplateRewritten'](template, templateDocument))
                  templateEngine['rewriteTemplate'](template, function (htmlString) {
                      return ko.templateRewriting.memoizeBindingAttributeSyntax(htmlString, templateEngine);
                  }, templateDocument);
          },
  
          memoizeBindingAttributeSyntax: function (htmlString, templateEngine) {
              return htmlString.replace(memoizeDataBindingAttributeSyntaxRegex, function () {
                  return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[4], /* tagToRetain: */ arguments[1], /* nodeName: */ arguments[2], templateEngine);
              }).replace(memoizeVirtualContainerBindingSyntaxRegex, function() {
                  return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[1], /* tagToRetain: */ "<!-- ko -->", /* nodeName: */ "#comment", templateEngine);
              });
          },
  
          applyMemoizedBindingsToNextSibling: function (bindings, nodeName) {
              return ko.memoization.memoize(function (domNode, bindingContext) {
                  var nodeToBind = domNode.nextSibling;
                  if (nodeToBind && nodeToBind.nodeName.toLowerCase() === nodeName) {
                      ko.applyBindingAccessorsToNode(nodeToBind, bindings, bindingContext);
                  }
              });
          }
      }
  })();
  
  
  // Exported only because it has to be referenced by string lookup from within rewritten template
  ko.exportSymbol('__tr_ambtns', ko.templateRewriting.applyMemoizedBindingsToNextSibling);
  (function() {
      // A template source represents a read/write way of accessing a template. This is to eliminate the need for template loading/saving
      // logic to be duplicated in every template engine (and means they can all work with anonymous templates, etc.)
      //
      // Two are provided by default:
      //  1. ko.templateSources.domElement       - reads/writes the text content of an arbitrary DOM element
      //  2. ko.templateSources.anonymousElement - uses ko.utils.domData to read/write text *associated* with the DOM element, but
      //                                           without reading/writing the actual element text content, since it will be overwritten
      //                                           with the rendered template output.
      // You can implement your own template source if you want to fetch/store templates somewhere other than in DOM elements.
      // Template sources need to have the following functions:
      //   text() 			- returns the template text from your storage location
      //   text(value)		- writes the supplied template text to your storage location
      //   data(key)			- reads values stored using data(key, value) - see below
      //   data(key, value)	- associates "value" with this template and the key "key". Is used to store information like "isRewritten".
      //
      // Optionally, template sources can also have the following functions:
      //   nodes()            - returns a DOM element containing the nodes of this template, where available
      //   nodes(value)       - writes the given DOM element to your storage location
      // If a DOM element is available for a given template source, template engines are encouraged to use it in preference over text()
      // for improved speed. However, all templateSources must supply text() even if they don't supply nodes().
      //
      // Once you've implemented a templateSource, make your template engine use it by subclassing whatever template engine you were
      // using and overriding "makeTemplateSource" to return an instance of your custom template source.
  
      ko.templateSources = {};
  
      // ---- ko.templateSources.domElement -----
  
      // template types
      var templateScript = 1,
          templateTextArea = 2,
          templateTemplate = 3,
          templateElement = 4;
  
      ko.templateSources.domElement = function(element) {
          this.domElement = element;
  
          if (element) {
              var tagNameLower = ko.utils.tagNameLower(element);
              this.templateType =
                  tagNameLower === "script" ? templateScript :
                  tagNameLower === "textarea" ? templateTextArea :
                      // For browsers with proper <template> element support, where the .content property gives a document fragment
                  tagNameLower == "template" && element.content && element.content.nodeType === 11 ? templateTemplate :
                  templateElement;
          }
      }
  
      ko.templateSources.domElement.prototype['text'] = function(/* valueToWrite */) {
          var elemContentsProperty = this.templateType === templateScript ? "text"
                                   : this.templateType === templateTextArea ? "value"
                                   : "innerHTML";
  
          if (arguments.length == 0) {
              return this.domElement[elemContentsProperty];
          } else {
              var valueToWrite = arguments[0];
              if (elemContentsProperty === "innerHTML")
                  ko.utils.setHtml(this.domElement, valueToWrite);
              else
                  this.domElement[elemContentsProperty] = valueToWrite;
          }
      };
  
      var dataDomDataPrefix = ko.utils.domData.nextKey() + "_";
      ko.templateSources.domElement.prototype['data'] = function(key /*, valueToWrite */) {
          if (arguments.length === 1) {
              return ko.utils.domData.get(this.domElement, dataDomDataPrefix + key);
          } else {
              ko.utils.domData.set(this.domElement, dataDomDataPrefix + key, arguments[1]);
          }
      };
  
      var templatesDomDataKey = ko.utils.domData.nextKey();
      function getTemplateDomData(element) {
          return ko.utils.domData.get(element, templatesDomDataKey) || {};
      }
      function setTemplateDomData(element, data) {
          ko.utils.domData.set(element, templatesDomDataKey, data);
      }
  
      ko.templateSources.domElement.prototype['nodes'] = function(/* valueToWrite */) {
          var element = this.domElement;
          if (arguments.length == 0) {
              var templateData = getTemplateDomData(element),
                  containerData = templateData.containerData;
              return containerData || (
                  this.templateType === templateTemplate ? element.content :
                  this.templateType === templateElement ? element :
                  undefined);
          } else {
              var valueToWrite = arguments[0];
              setTemplateDomData(element, {containerData: valueToWrite});
          }
      };
  
      // ---- ko.templateSources.anonymousTemplate -----
      // Anonymous templates are normally saved/retrieved as DOM nodes through "nodes".
      // For compatibility, you can also read "text"; it will be serialized from the nodes on demand.
      // Writing to "text" is still supported, but then the template data will not be available as DOM nodes.
  
      ko.templateSources.anonymousTemplate = function(element) {
          this.domElement = element;
      }
      ko.templateSources.anonymousTemplate.prototype = new ko.templateSources.domElement();
      ko.templateSources.anonymousTemplate.prototype.constructor = ko.templateSources.anonymousTemplate;
      ko.templateSources.anonymousTemplate.prototype['text'] = function(/* valueToWrite */) {
          if (arguments.length == 0) {
              var templateData = getTemplateDomData(this.domElement);
              if (templateData.textData === undefined && templateData.containerData)
                  templateData.textData = templateData.containerData.innerHTML;
              return templateData.textData;
          } else {
              var valueToWrite = arguments[0];
              setTemplateDomData(this.domElement, {textData: valueToWrite});
          }
      };
  
      ko.exportSymbol('templateSources', ko.templateSources);
      ko.exportSymbol('templateSources.domElement', ko.templateSources.domElement);
      ko.exportSymbol('templateSources.anonymousTemplate', ko.templateSources.anonymousTemplate);
  })();
  (function () {
      var _templateEngine;
      ko.setTemplateEngine = function (templateEngine) {
          if ((templateEngine != undefined) && !(templateEngine instanceof ko.templateEngine))
              throw new Error("templateEngine must inherit from ko.templateEngine");
          _templateEngine = templateEngine;
      }
  
      function invokeForEachNodeInContinuousRange(firstNode, lastNode, action) {
          var node, nextInQueue = firstNode, firstOutOfRangeNode = ko.virtualElements.nextSibling(lastNode);
          while (nextInQueue && ((node = nextInQueue) !== firstOutOfRangeNode)) {
              nextInQueue = ko.virtualElements.nextSibling(node);
              action(node, nextInQueue);
          }
      }
  
      function activateBindingsOnContinuousNodeArray(continuousNodeArray, bindingContext) {
          // To be used on any nodes that have been rendered by a template and have been inserted into some parent element
          // Walks through continuousNodeArray (which *must* be continuous, i.e., an uninterrupted sequence of sibling nodes, because
          // the algorithm for walking them relies on this), and for each top-level item in the virtual-element sense,
          // (1) Does a regular "applyBindings" to associate bindingContext with this node and to activate any non-memoized bindings
          // (2) Unmemoizes any memos in the DOM subtree (e.g., to activate bindings that had been memoized during template rewriting)
  
          if (continuousNodeArray.length) {
              var firstNode = continuousNodeArray[0],
                  lastNode = continuousNodeArray[continuousNodeArray.length - 1],
                  parentNode = firstNode.parentNode,
                  provider = ko.bindingProvider['instance'],
                  preprocessNode = provider['preprocessNode'];
  
              if (preprocessNode) {
                  invokeForEachNodeInContinuousRange(firstNode, lastNode, function(node, nextNodeInRange) {
                      var nodePreviousSibling = node.previousSibling;
                      var newNodes = preprocessNode.call(provider, node);
                      if (newNodes) {
                          if (node === firstNode)
                              firstNode = newNodes[0] || nextNodeInRange;
                          if (node === lastNode)
                              lastNode = newNodes[newNodes.length - 1] || nodePreviousSibling;
                      }
                  });
  
                  // Because preprocessNode can change the nodes, including the first and last nodes, update continuousNodeArray to match.
                  // We need the full set, including inner nodes, because the unmemoize step might remove the first node (and so the real
                  // first node needs to be in the array).
                  continuousNodeArray.length = 0;
                  if (!firstNode) { // preprocessNode might have removed all the nodes, in which case there's nothing left to do
                      return;
                  }
                  if (firstNode === lastNode) {
                      continuousNodeArray.push(firstNode);
                  } else {
                      continuousNodeArray.push(firstNode, lastNode);
                      ko.utils.fixUpContinuousNodeArray(continuousNodeArray, parentNode);
                  }
              }
  
              // Need to applyBindings *before* unmemoziation, because unmemoization might introduce extra nodes (that we don't want to re-bind)
              // whereas a regular applyBindings won't introduce new memoized nodes
              invokeForEachNodeInContinuousRange(firstNode, lastNode, function(node) {
                  if (node.nodeType === 1 || node.nodeType === 8)
                      ko.applyBindings(bindingContext, node);
              });
              invokeForEachNodeInContinuousRange(firstNode, lastNode, function(node) {
                  if (node.nodeType === 1 || node.nodeType === 8)
                      ko.memoization.unmemoizeDomNodeAndDescendants(node, [bindingContext]);
              });
  
              // Make sure any changes done by applyBindings or unmemoize are reflected in the array
              ko.utils.fixUpContinuousNodeArray(continuousNodeArray, parentNode);
          }
      }
  
      function getFirstNodeFromPossibleArray(nodeOrNodeArray) {
          return nodeOrNodeArray.nodeType ? nodeOrNodeArray
                                          : nodeOrNodeArray.length > 0 ? nodeOrNodeArray[0]
                                          : null;
      }
  
      function executeTemplate(targetNodeOrNodeArray, renderMode, template, bindingContext, options) {
          options = options || {};
          var firstTargetNode = targetNodeOrNodeArray && getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
          var templateDocument = (firstTargetNode || template || {}).ownerDocument;
          var templateEngineToUse = (options['templateEngine'] || _templateEngine);
          ko.templateRewriting.ensureTemplateIsRewritten(template, templateEngineToUse, templateDocument);
          var renderedNodesArray = templateEngineToUse['renderTemplate'](template, bindingContext, options, templateDocument);
  
          // Loosely check result is an array of DOM nodes
          if ((typeof renderedNodesArray.length != "number") || (renderedNodesArray.length > 0 && typeof renderedNodesArray[0].nodeType != "number"))
              throw new Error("Template engine must return an array of DOM nodes");
  
          var haveAddedNodesToParent = false;
          switch (renderMode) {
              case "replaceChildren":
                  ko.virtualElements.setDomNodeChildren(targetNodeOrNodeArray, renderedNodesArray);
                  haveAddedNodesToParent = true;
                  break;
              case "replaceNode":
                  ko.utils.replaceDomNodes(targetNodeOrNodeArray, renderedNodesArray);
                  haveAddedNodesToParent = true;
                  break;
              case "ignoreTargetNode": break;
              default:
                  throw new Error("Unknown renderMode: " + renderMode);
          }
  
          if (haveAddedNodesToParent) {
              activateBindingsOnContinuousNodeArray(renderedNodesArray, bindingContext);
              if (options['afterRender'])
                  ko.dependencyDetection.ignore(options['afterRender'], null, [renderedNodesArray, bindingContext['$data']]);
          }
  
          return renderedNodesArray;
      }
  
      function resolveTemplateName(template, data, context) {
          // The template can be specified as:
          if (ko.isObservable(template)) {
              // 1. An observable, with string value
              return template();
          } else if (typeof template === 'function') {
              // 2. A function of (data, context) returning a string
              return template(data, context);
          } else {
              // 3. A string
              return template;
          }
      }
  
      ko.renderTemplate = function (template, dataOrBindingContext, options, targetNodeOrNodeArray, renderMode) {
          options = options || {};
          if ((options['templateEngine'] || _templateEngine) == undefined)
              throw new Error("Set a template engine before calling renderTemplate");
          renderMode = renderMode || "replaceChildren";
  
          if (targetNodeOrNodeArray) {
              var firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
  
              var whenToDispose = function () { return (!firstTargetNode) || !ko.utils.domNodeIsAttachedToDocument(firstTargetNode); }; // Passive disposal (on next evaluation)
              var activelyDisposeWhenNodeIsRemoved = (firstTargetNode && renderMode == "replaceNode") ? firstTargetNode.parentNode : firstTargetNode;
  
              return ko.dependentObservable( // So the DOM is automatically updated when any dependency changes
                  function () {
                      // Ensure we've got a proper binding context to work with
                      var bindingContext = (dataOrBindingContext && (dataOrBindingContext instanceof ko.bindingContext))
                          ? dataOrBindingContext
                          : new ko.bindingContext(dataOrBindingContext, null, null, null, { "exportDependencies": true });
  
                      var templateName = resolveTemplateName(template, bindingContext['$data'], bindingContext),
                          renderedNodesArray = executeTemplate(targetNodeOrNodeArray, renderMode, templateName, bindingContext, options);
  
                      if (renderMode == "replaceNode") {
                          targetNodeOrNodeArray = renderedNodesArray;
                          firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
                      }
                  },
                  null,
                  { disposeWhen: whenToDispose, disposeWhenNodeIsRemoved: activelyDisposeWhenNodeIsRemoved }
              );
          } else {
              // We don't yet have a DOM node to evaluate, so use a memo and render the template later when there is a DOM node
              return ko.memoization.memoize(function (domNode) {
                  ko.renderTemplate(template, dataOrBindingContext, options, domNode, "replaceNode");
              });
          }
      };
  
      ko.renderTemplateForEach = function (template, arrayOrObservableArray, options, targetNode, parentBindingContext) {
          // Since setDomNodeChildrenFromArrayMapping always calls executeTemplateForArrayItem and then
          // activateBindingsCallback for added items, we can store the binding context in the former to use in the latter.
          var arrayItemContext;
  
          // This will be called by setDomNodeChildrenFromArrayMapping to get the nodes to add to targetNode
          var executeTemplateForArrayItem = function (arrayValue, index) {
              // Support selecting template as a function of the data being rendered
              arrayItemContext = parentBindingContext['createChildContext'](arrayValue, options['as'], function(context) {
                  context['$index'] = index;
              });
  
              var templateName = resolveTemplateName(template, arrayValue, arrayItemContext);
              return executeTemplate(null, "ignoreTargetNode", templateName, arrayItemContext, options);
          }
  
          // This will be called whenever setDomNodeChildrenFromArrayMapping has added nodes to targetNode
          var activateBindingsCallback = function(arrayValue, addedNodesArray, index) {
              activateBindingsOnContinuousNodeArray(addedNodesArray, arrayItemContext);
              if (options['afterRender'])
                  options['afterRender'](addedNodesArray, arrayValue);
  
              // release the "cache" variable, so that it can be collected by
              // the GC when its value isn't used from within the bindings anymore.
              arrayItemContext = null;
          };
  
          return ko.dependentObservable(function () {
              var unwrappedArray = ko.utils.unwrapObservable(arrayOrObservableArray) || [];
              if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
                  unwrappedArray = [unwrappedArray];
  
              // Filter out any entries marked as destroyed
              var filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {
                  return options['includeDestroyed'] || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);
              });
  
              // Call setDomNodeChildrenFromArrayMapping, ignoring any observables unwrapped within (most likely from a callback function).
              // If the array items are observables, though, they will be unwrapped in executeTemplateForArrayItem and managed within setDomNodeChildrenFromArrayMapping.
              ko.dependencyDetection.ignore(ko.utils.setDomNodeChildrenFromArrayMapping, null, [targetNode, filteredArray, executeTemplateForArrayItem, options, activateBindingsCallback]);
  
          }, null, { disposeWhenNodeIsRemoved: targetNode });
      };
  
      var templateComputedDomDataKey = ko.utils.domData.nextKey();
      function disposeOldComputedAndStoreNewOne(element, newComputed) {
          var oldComputed = ko.utils.domData.get(element, templateComputedDomDataKey);
          if (oldComputed && (typeof(oldComputed.dispose) == 'function'))
              oldComputed.dispose();
          ko.utils.domData.set(element, templateComputedDomDataKey, (newComputed && newComputed.isActive()) ? newComputed : undefined);
      }
  
      ko.bindingHandlers['template'] = {
          'init': function(element, valueAccessor) {
              // Support anonymous templates
              var bindingValue = ko.utils.unwrapObservable(valueAccessor());
              if (typeof bindingValue == "string" || bindingValue['name']) {
                  // It's a named template - clear the element
                  ko.virtualElements.emptyNode(element);
              } else if ('nodes' in bindingValue) {
                  // We've been given an array of DOM nodes. Save them as the template source.
                  // There is no known use case for the node array being an observable array (if the output
                  // varies, put that behavior *into* your template - that's what templates are for), and
                  // the implementation would be a mess, so assert that it's not observable.
                  var nodes = bindingValue['nodes'] || [];
                  if (ko.isObservable(nodes)) {
                      throw new Error('The "nodes" option must be a plain, non-observable array.');
                  }
                  var container = ko.utils.moveCleanedNodesToContainerElement(nodes); // This also removes the nodes from their current parent
                  new ko.templateSources.anonymousTemplate(element)['nodes'](container);
              } else {
                  // It's an anonymous template - store the element contents, then clear the element
                  var templateNodes = ko.virtualElements.childNodes(element),
                      container = ko.utils.moveCleanedNodesToContainerElement(templateNodes); // This also removes the nodes from their current parent
                  new ko.templateSources.anonymousTemplate(element)['nodes'](container);
              }
              return { 'controlsDescendantBindings': true };
          },
          'update': function (element, valueAccessor, allBindings, viewModel, bindingContext) {
              var value = valueAccessor(),
                  options = ko.utils.unwrapObservable(value),
                  shouldDisplay = true,
                  templateComputed = null,
                  templateName;
  
              if (typeof options == "string") {
                  templateName = value;
                  options = {};
              } else {
                  templateName = options['name'];
  
                  // Support "if"/"ifnot" conditions
                  if ('if' in options)
                      shouldDisplay = ko.utils.unwrapObservable(options['if']);
                  if (shouldDisplay && 'ifnot' in options)
                      shouldDisplay = !ko.utils.unwrapObservable(options['ifnot']);
              }
  
              if ('foreach' in options) {
                  // Render once for each data point (treating data set as empty if shouldDisplay==false)
                  var dataArray = (shouldDisplay && options['foreach']) || [];
                  templateComputed = ko.renderTemplateForEach(templateName || element, dataArray, options, element, bindingContext);
              } else if (!shouldDisplay) {
                  ko.virtualElements.emptyNode(element);
              } else {
                  // Render once for this single data point (or use the viewModel if no data was provided)
                  var innerBindingContext = ('data' in options) ?
                      bindingContext.createStaticChildContext(options['data'], options['as']) :  // Given an explitit 'data' value, we create a child binding context for it
                      bindingContext;                                                        // Given no explicit 'data' value, we retain the same binding context
                  templateComputed = ko.renderTemplate(templateName || element, innerBindingContext, options, element);
              }
  
              // It only makes sense to have a single template computed per element (otherwise which one should have its output displayed?)
              disposeOldComputedAndStoreNewOne(element, templateComputed);
          }
      };
  
      // Anonymous templates can't be rewritten. Give a nice error message if you try to do it.
      ko.expressionRewriting.bindingRewriteValidators['template'] = function(bindingValue) {
          var parsedBindingValue = ko.expressionRewriting.parseObjectLiteral(bindingValue);
  
          if ((parsedBindingValue.length == 1) && parsedBindingValue[0]['unknown'])
              return null; // It looks like a string literal, not an object literal, so treat it as a named template (which is allowed for rewriting)
  
          if (ko.expressionRewriting.keyValueArrayContainsKey(parsedBindingValue, "name"))
              return null; // Named templates can be rewritten, so return "no error"
          return "This template engine does not support anonymous templates nested within its templates";
      };
  
      ko.virtualElements.allowedBindings['template'] = true;
  })();
  
  ko.exportSymbol('setTemplateEngine', ko.setTemplateEngine);
  ko.exportSymbol('renderTemplate', ko.renderTemplate);
  // Go through the items that have been added and deleted and try to find matches between them.
  ko.utils.findMovesInArrayComparison = function (left, right, limitFailedCompares) {
      if (left.length && right.length) {
          var failedCompares, l, r, leftItem, rightItem;
          for (failedCompares = l = 0; (!limitFailedCompares || failedCompares < limitFailedCompares) && (leftItem = left[l]); ++l) {
              for (r = 0; rightItem = right[r]; ++r) {
                  if (leftItem['value'] === rightItem['value']) {
                      leftItem['moved'] = rightItem['index'];
                      rightItem['moved'] = leftItem['index'];
                      right.splice(r, 1);         // This item is marked as moved; so remove it from right list
                      failedCompares = r = 0;     // Reset failed compares count because we're checking for consecutive failures
                      break;
                  }
              }
              failedCompares += r;
          }
      }
  };
  
  ko.utils.compareArrays = (function () {
      var statusNotInOld = 'added', statusNotInNew = 'deleted';
  
      // Simple calculation based on Levenshtein distance.
      function compareArrays(oldArray, newArray, options) {
          // For backward compatibility, if the third arg is actually a bool, interpret
          // it as the old parameter 'dontLimitMoves'. Newer code should use { dontLimitMoves: true }.
          options = (typeof options === 'boolean') ? { 'dontLimitMoves': options } : (options || {});
          oldArray = oldArray || [];
          newArray = newArray || [];
  
          if (oldArray.length < newArray.length)
              return compareSmallArrayToBigArray(oldArray, newArray, statusNotInOld, statusNotInNew, options);
          else
              return compareSmallArrayToBigArray(newArray, oldArray, statusNotInNew, statusNotInOld, options);
      }
  
      function compareSmallArrayToBigArray(smlArray, bigArray, statusNotInSml, statusNotInBig, options) {
          var myMin = Math.min,
              myMax = Math.max,
              editDistanceMatrix = [],
              smlIndex, smlIndexMax = smlArray.length,
              bigIndex, bigIndexMax = bigArray.length,
              compareRange = (bigIndexMax - smlIndexMax) || 1,
              maxDistance = smlIndexMax + bigIndexMax + 1,
              thisRow, lastRow,
              bigIndexMaxForRow, bigIndexMinForRow;
  
          for (smlIndex = 0; smlIndex <= smlIndexMax; smlIndex++) {
              lastRow = thisRow;
              editDistanceMatrix.push(thisRow = []);
              bigIndexMaxForRow = myMin(bigIndexMax, smlIndex + compareRange);
              bigIndexMinForRow = myMax(0, smlIndex - 1);
              for (bigIndex = bigIndexMinForRow; bigIndex <= bigIndexMaxForRow; bigIndex++) {
                  if (!bigIndex)
                      thisRow[bigIndex] = smlIndex + 1;
                  else if (!smlIndex)  // Top row - transform empty array into new array via additions
                      thisRow[bigIndex] = bigIndex + 1;
                  else if (smlArray[smlIndex - 1] === bigArray[bigIndex - 1])
                      thisRow[bigIndex] = lastRow[bigIndex - 1];                  // copy value (no edit)
                  else {
                      var northDistance = lastRow[bigIndex] || maxDistance;       // not in big (deletion)
                      var westDistance = thisRow[bigIndex - 1] || maxDistance;    // not in small (addition)
                      thisRow[bigIndex] = myMin(northDistance, westDistance) + 1;
                  }
              }
          }
  
          var editScript = [], meMinusOne, notInSml = [], notInBig = [];
          for (smlIndex = smlIndexMax, bigIndex = bigIndexMax; smlIndex || bigIndex;) {
              meMinusOne = editDistanceMatrix[smlIndex][bigIndex] - 1;
              if (bigIndex && meMinusOne === editDistanceMatrix[smlIndex][bigIndex-1]) {
                  notInSml.push(editScript[editScript.length] = {     // added
                      'status': statusNotInSml,
                      'value': bigArray[--bigIndex],
                      'index': bigIndex });
              } else if (smlIndex && meMinusOne === editDistanceMatrix[smlIndex - 1][bigIndex]) {
                  notInBig.push(editScript[editScript.length] = {     // deleted
                      'status': statusNotInBig,
                      'value': smlArray[--smlIndex],
                      'index': smlIndex });
              } else {
                  --bigIndex;
                  --smlIndex;
                  if (!options['sparse']) {
                      editScript.push({
                          'status': "retained",
                          'value': bigArray[bigIndex] });
                  }
              }
          }
  
          // Set a limit on the number of consecutive non-matching comparisons; having it a multiple of
          // smlIndexMax keeps the time complexity of this algorithm linear.
          ko.utils.findMovesInArrayComparison(notInBig, notInSml, !options['dontLimitMoves'] && smlIndexMax * 10);
  
          return editScript.reverse();
      }
  
      return compareArrays;
  })();
  
  ko.exportSymbol('utils.compareArrays', ko.utils.compareArrays);
  (function () {
      // Objective:
      // * Given an input array, a container DOM node, and a function from array elements to arrays of DOM nodes,
      //   map the array elements to arrays of DOM nodes, concatenate together all these arrays, and use them to populate the container DOM node
      // * Next time we're given the same combination of things (with the array possibly having mutated), update the container DOM node
      //   so that its children is again the concatenation of the mappings of the array elements, but don't re-map any array elements that we
      //   previously mapped - retain those nodes, and just insert/delete other ones
  
      // "callbackAfterAddingNodes" will be invoked after any "mapping"-generated nodes are inserted into the container node
      // You can use this, for example, to activate bindings on those nodes.
  
      function mapNodeAndRefreshWhenChanged(containerNode, mapping, valueToMap, callbackAfterAddingNodes, index) {
          // Map this array value inside a dependentObservable so we re-map when any dependency changes
          var mappedNodes = [];
          var dependentObservable = ko.dependentObservable(function() {
              var newMappedNodes = mapping(valueToMap, index, ko.utils.fixUpContinuousNodeArray(mappedNodes, containerNode)) || [];
  
              // On subsequent evaluations, just replace the previously-inserted DOM nodes
              if (mappedNodes.length > 0) {
                  ko.utils.replaceDomNodes(mappedNodes, newMappedNodes);
                  if (callbackAfterAddingNodes)
                      ko.dependencyDetection.ignore(callbackAfterAddingNodes, null, [valueToMap, newMappedNodes, index]);
              }
  
              // Replace the contents of the mappedNodes array, thereby updating the record
              // of which nodes would be deleted if valueToMap was itself later removed
              mappedNodes.length = 0;
              ko.utils.arrayPushAll(mappedNodes, newMappedNodes);
          }, null, { disposeWhenNodeIsRemoved: containerNode, disposeWhen: function() { return !ko.utils.anyDomNodeIsAttachedToDocument(mappedNodes); } });
          return { mappedNodes : mappedNodes, dependentObservable : (dependentObservable.isActive() ? dependentObservable : undefined) };
      }
  
      var lastMappingResultDomDataKey = ko.utils.domData.nextKey(),
          deletedItemDummyValue = ko.utils.domData.nextKey();
  
      ko.utils.setDomNodeChildrenFromArrayMapping = function (domNode, array, mapping, options, callbackAfterAddingNodes) {
          // Compare the provided array against the previous one
          array = array || [];
          options = options || {};
          var isFirstExecution = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) === undefined;
          var lastMappingResult = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) || [];
          var lastArray = ko.utils.arrayMap(lastMappingResult, function (x) { return x.arrayEntry; });
          var editScript = ko.utils.compareArrays(lastArray, array, options['dontLimitMoves']);
  
          // Build the new mapping result
          var newMappingResult = [];
          var lastMappingResultIndex = 0;
          var newMappingResultIndex = 0;
  
          var nodesToDelete = [];
          var itemsToProcess = [];
          var itemsForBeforeRemoveCallbacks = [];
          var itemsForMoveCallbacks = [];
          var itemsForAfterAddCallbacks = [];
          var mapData;
  
          function itemMovedOrRetained(editScriptIndex, oldPosition) {
              mapData = lastMappingResult[oldPosition];
              if (newMappingResultIndex !== oldPosition)
                  itemsForMoveCallbacks[editScriptIndex] = mapData;
              // Since updating the index might change the nodes, do so before calling fixUpContinuousNodeArray
              mapData.indexObservable(newMappingResultIndex++);
              ko.utils.fixUpContinuousNodeArray(mapData.mappedNodes, domNode);
              newMappingResult.push(mapData);
              itemsToProcess.push(mapData);
          }
  
          function callCallback(callback, items) {
              if (callback) {
                  for (var i = 0, n = items.length; i < n; i++) {
                      if (items[i]) {
                          ko.utils.arrayForEach(items[i].mappedNodes, function(node) {
                              callback(node, i, items[i].arrayEntry);
                          });
                      }
                  }
              }
          }
  
          for (var i = 0, editScriptItem, movedIndex; editScriptItem = editScript[i]; i++) {
              movedIndex = editScriptItem['moved'];
              switch (editScriptItem['status']) {
                  case "deleted":
                      if (movedIndex === undefined) {
                          mapData = lastMappingResult[lastMappingResultIndex];
  
                          // Stop tracking changes to the mapping for these nodes
                          if (mapData.dependentObservable) {
                              mapData.dependentObservable.dispose();
                              mapData.dependentObservable = undefined;
                          }
  
                          // Queue these nodes for later removal
                          if (ko.utils.fixUpContinuousNodeArray(mapData.mappedNodes, domNode).length) {
                              if (options['beforeRemove']) {
                                  newMappingResult.push(mapData);
                                  itemsToProcess.push(mapData);
                                  if (mapData.arrayEntry === deletedItemDummyValue) {
                                      mapData = null;
                                  } else {
                                      itemsForBeforeRemoveCallbacks[i] = mapData;
                                  }
                              }
                              if (mapData) {
                                  nodesToDelete.push.apply(nodesToDelete, mapData.mappedNodes);
                              }
                          }
                      }
                      lastMappingResultIndex++;
                      break;
  
                  case "retained":
                      itemMovedOrRetained(i, lastMappingResultIndex++);
                      break;
  
                  case "added":
                      if (movedIndex !== undefined) {
                          itemMovedOrRetained(i, movedIndex);
                      } else {
                          mapData = { arrayEntry: editScriptItem['value'], indexObservable: ko.observable(newMappingResultIndex++) };
                          newMappingResult.push(mapData);
                          itemsToProcess.push(mapData);
                          if (!isFirstExecution)
                              itemsForAfterAddCallbacks[i] = mapData;
                      }
                      break;
              }
          }
  
          // Store a copy of the array items we just considered so we can difference it next time
          ko.utils.domData.set(domNode, lastMappingResultDomDataKey, newMappingResult);
  
          // Call beforeMove first before any changes have been made to the DOM
          callCallback(options['beforeMove'], itemsForMoveCallbacks);
  
          // Next remove nodes for deleted items (or just clean if there's a beforeRemove callback)
          ko.utils.arrayForEach(nodesToDelete, options['beforeRemove'] ? ko.cleanNode : ko.removeNode);
  
          // Next add/reorder the remaining items (will include deleted items if there's a beforeRemove callback)
          for (var i = 0, nextNode = ko.virtualElements.firstChild(domNode), lastNode, node; mapData = itemsToProcess[i]; i++) {
              // Get nodes for newly added items
              if (!mapData.mappedNodes)
                  ko.utils.extend(mapData, mapNodeAndRefreshWhenChanged(domNode, mapping, mapData.arrayEntry, callbackAfterAddingNodes, mapData.indexObservable));
  
              // Put nodes in the right place if they aren't there already
              for (var j = 0; node = mapData.mappedNodes[j]; nextNode = node.nextSibling, lastNode = node, j++) {
                  if (node !== nextNode)
                      ko.virtualElements.insertAfter(domNode, node, lastNode);
              }
  
              // Run the callbacks for newly added nodes (for example, to apply bindings, etc.)
              if (!mapData.initialized && callbackAfterAddingNodes) {
                  callbackAfterAddingNodes(mapData.arrayEntry, mapData.mappedNodes, mapData.indexObservable);
                  mapData.initialized = true;
              }
          }
  
          // If there's a beforeRemove callback, call it after reordering.
          // Note that we assume that the beforeRemove callback will usually be used to remove the nodes using
          // some sort of animation, which is why we first reorder the nodes that will be removed. If the
          // callback instead removes the nodes right away, it would be more efficient to skip reordering them.
          // Perhaps we'll make that change in the future if this scenario becomes more common.
          callCallback(options['beforeRemove'], itemsForBeforeRemoveCallbacks);
  
          // Replace the stored values of deleted items with a dummy value. This provides two benefits: it marks this item
          // as already "removed" so we won't call beforeRemove for it again, and it ensures that the item won't match up
          // with an actual item in the array and appear as "retained" or "moved".
          for (i = 0; i < itemsForBeforeRemoveCallbacks.length; ++i) {
              if (itemsForBeforeRemoveCallbacks[i]) {
                  itemsForBeforeRemoveCallbacks[i].arrayEntry = deletedItemDummyValue;
              }
          }
  
          // Finally call afterMove and afterAdd callbacks
          callCallback(options['afterMove'], itemsForMoveCallbacks);
          callCallback(options['afterAdd'], itemsForAfterAddCallbacks);
      }
  })();
  
  ko.exportSymbol('utils.setDomNodeChildrenFromArrayMapping', ko.utils.setDomNodeChildrenFromArrayMapping);
  ko.nativeTemplateEngine = function () {
      this['allowTemplateRewriting'] = false;
  }
  
  ko.nativeTemplateEngine.prototype = new ko.templateEngine();
  ko.nativeTemplateEngine.prototype.constructor = ko.nativeTemplateEngine;
  ko.nativeTemplateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options, templateDocument) {
      var useNodesIfAvailable = !(ko.utils.ieVersion < 9), // IE<9 cloneNode doesn't work properly
          templateNodesFunc = useNodesIfAvailable ? templateSource['nodes'] : null,
          templateNodes = templateNodesFunc ? templateSource['nodes']() : null;
  
      if (templateNodes) {
          return ko.utils.makeArray(templateNodes.cloneNode(true).childNodes);
      } else {
          var templateText = templateSource['text']();
          return ko.utils.parseHtmlFragment(templateText, templateDocument);
      }
  };
  
  ko.nativeTemplateEngine.instance = new ko.nativeTemplateEngine();
  ko.setTemplateEngine(ko.nativeTemplateEngine.instance);
  
  ko.exportSymbol('nativeTemplateEngine', ko.nativeTemplateEngine);
  (function() {
      ko.jqueryTmplTemplateEngine = function () {
          // Detect which version of jquery-tmpl you're using. Unfortunately jquery-tmpl
          // doesn't expose a version number, so we have to infer it.
          // Note that as of Knockout 1.3, we only support jQuery.tmpl 1.0.0pre and later,
          // which KO internally refers to as version "2", so older versions are no longer detected.
          var jQueryTmplVersion = this.jQueryTmplVersion = (function() {
              if (!jQueryInstance || !(jQueryInstance['tmpl']))
                  return 0;
              // Since it exposes no official version number, we use our own numbering system. To be updated as jquery-tmpl evolves.
              try {
                  if (jQueryInstance['tmpl']['tag']['tmpl']['open'].toString().indexOf('__') >= 0) {
                      // Since 1.0.0pre, custom tags should append markup to an array called "__"
                      return 2; // Final version of jquery.tmpl
                  }
              } catch(ex) { /* Apparently not the version we were looking for */ }
  
              return 1; // Any older version that we don't support
          })();
  
          function ensureHasReferencedJQueryTemplates() {
              if (jQueryTmplVersion < 2)
                  throw new Error("Your version of jQuery.tmpl is too old. Please upgrade to jQuery.tmpl 1.0.0pre or later.");
          }
  
          function executeTemplate(compiledTemplate, data, jQueryTemplateOptions) {
              return jQueryInstance['tmpl'](compiledTemplate, data, jQueryTemplateOptions);
          }
  
          this['renderTemplateSource'] = function(templateSource, bindingContext, options, templateDocument) {
              templateDocument = templateDocument || document;
              options = options || {};
              ensureHasReferencedJQueryTemplates();
  
              // Ensure we have stored a precompiled version of this template (don't want to reparse on every render)
              var precompiled = templateSource['data']('precompiled');
              if (!precompiled) {
                  var templateText = templateSource['text']() || "";
                  // Wrap in "with($whatever.koBindingContext) { ... }"
                  templateText = "{{ko_with $item.koBindingContext}}" + templateText + "{{/ko_with}}";
  
                  precompiled = jQueryInstance['template'](null, templateText);
                  templateSource['data']('precompiled', precompiled);
              }
  
              var data = [bindingContext['$data']]; // Prewrap the data in an array to stop jquery.tmpl from trying to unwrap any arrays
              var jQueryTemplateOptions = jQueryInstance['extend']({ 'koBindingContext': bindingContext }, options['templateOptions']);
  
              var resultNodes = executeTemplate(precompiled, data, jQueryTemplateOptions);
              resultNodes['appendTo'](templateDocument.createElement("div")); // Using "appendTo" forces jQuery/jQuery.tmpl to perform necessary cleanup work
  
              jQueryInstance['fragments'] = {}; // Clear jQuery's fragment cache to avoid a memory leak after a large number of template renders
              return resultNodes;
          };
  
          this['createJavaScriptEvaluatorBlock'] = function(script) {
              return "{{ko_code ((function() { return " + script + " })()) }}";
          };
  
          this['addTemplate'] = function(templateName, templateMarkup) {
              document.write("<script type='text/html' id='" + templateName + "'>" + templateMarkup + "<" + "/script>");
          };
  
          if (jQueryTmplVersion > 0) {
              jQueryInstance['tmpl']['tag']['ko_code'] = {
                  open: "__.push($1 || '');"
              };
              jQueryInstance['tmpl']['tag']['ko_with'] = {
                  open: "with($1) {",
                  close: "} "
              };
          }
      };
  
      ko.jqueryTmplTemplateEngine.prototype = new ko.templateEngine();
      ko.jqueryTmplTemplateEngine.prototype.constructor = ko.jqueryTmplTemplateEngine;
  
      // Use this one by default *only if jquery.tmpl is referenced*
      var jqueryTmplTemplateEngineInstance = new ko.jqueryTmplTemplateEngine();
      if (jqueryTmplTemplateEngineInstance.jQueryTmplVersion > 0)
          ko.setTemplateEngine(jqueryTmplTemplateEngineInstance);
  
      ko.exportSymbol('jqueryTmplTemplateEngine', ko.jqueryTmplTemplateEngine);
  })();
  }));
  }());
  })();
  
  },{}]},{},[1])
  
  //# sourceMappingURL=map/build.js.map
  