text: /*
   Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
   (c) 2010-2013, Vladimir Agafonkin
   (c) 2010-2011, CloudMade
   */
  (function (window, document, undefined) {
      var oldL = window.L,
          L = {};
  
      L.version = '0.7.3';
  
      // define Leaflet for Node module pattern loaders, including Browserify
      if (typeof module === 'object' && typeof module.exports === 'object') {
          module.exports = L;
  
          // define Leaflet as an AMD module
      } else if (typeof define === 'function' && define.amd) {
          define(L);
      }
  
      // define Leaflet as a global L variable, saving the original L to restore later if needed
  
      L.noConflict = function () {
          window.L = oldL;
          return this;
      };
  
      window.L = L;
  
  
      /*
       * L.Util contains various utility functions used throughout Leaflet code.
       */
  
      L.Util = {
          extend: function (dest) { // (Object[, Object, ...]) ->
              var sources = Array.prototype.slice.call(arguments, 1),
                  i, j, len, src;
  
              for (j = 0, len = sources.length; j < len; j++) {
                  src = sources[j] || {};
                  for (i in src) {
                      if (src.hasOwnProperty(i)) {
                          dest[i] = src[i];
                      }
                  }
              }
              return dest;
          },
  
          bind: function (fn, obj) { // (Function, Object) -> Function
              var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null;
              return function () {
                  return fn.apply(obj, args || arguments);
              };
          },
  
          stamp: (function () {
              var lastId = 0,
                  key = '_leaflet_id';
              return function (obj) {
                  obj[key] = obj[key] || ++lastId;
                  return obj[key];
              };
          }()),
  
          invokeEach: function (obj, method, context) {
              var i, args;
  
              if (typeof obj === 'object') {
                  args = Array.prototype.slice.call(arguments, 3);
  
                  for (i in obj) {
                      method.apply(context, [i, obj[i]].concat(args));
                  }
                  return true;
              }
  
              return false;
          },
  
          limitExecByInterval: function (fn, time, context) {
              var lock, execOnUnlock;
  
              return function wrapperFn() {
                  var args = arguments;
  
                  if (lock) {
                      execOnUnlock = true;
                      return;
                  }
  
                  lock = true;
  
                  setTimeout(function () {
                      lock = false;
  
                      if (execOnUnlock) {
                          wrapperFn.apply(context, args);
                          execOnUnlock = false;
                      }
                  }, time);
  
                  fn.apply(context, args);
              };
          },
  
          falseFn: function () {
              return false;
          },
  
          formatNum: function (num, digits) {
              var pow = Math.pow(10, digits || 5);
              return Math.round(num * pow) / pow;
          },
  
          trim: function (str) {
              return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
          },
  
          splitWords: function (str) {
              return L.Util.trim(str).split(/\s+/);
          },
  
          setOptions: function (obj, options) {
              obj.options = L.extend({}, obj.options, options);
              return obj.options;
          },
  
          getParamString: function (obj, existingUrl, uppercase) {
              var params = [];
              for (var i in obj) {
                  params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
              }
              return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
          },
          template: function (str, data) {
              return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
                  var value = data[key];
                  if (value === undefined) {
                      throw new Error('No value provided for variable ' + str);
                  } else if (typeof value === 'function') {
                      value = value(data);
                  }
                  return value;
              });
          },
  
          isArray: Array.isArray || function (obj) {
              return (Object.prototype.toString.call(obj) === '[object Array]');
          },
  
          emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
      };
  
      (function () {
  
          // inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
  
          function getPrefixed(name) {
              var i, fn,
                  prefixes = ['webkit', 'moz', 'o', 'ms'];
  
              for (i = 0; i < prefixes.length && !fn; i++) {
                  fn = window[prefixes[i] + name];
              }
  
              return fn;
          }
  
          var lastTime = 0;
  
          function timeoutDefer(fn) {
              var time = +new Date(),
                  timeToCall = Math.max(0, 16 - (time - lastTime));
  
              lastTime = time + timeToCall;
              return window.setTimeout(fn, timeToCall);
          }
  
          var requestFn = window.requestAnimationFrame ||
              getPrefixed('RequestAnimationFrame') || timeoutDefer;
  
          var cancelFn = window.cancelAnimationFrame ||
              getPrefixed('CancelAnimationFrame') ||
              getPrefixed('CancelRequestAnimationFrame') ||
              function (id) { window.clearTimeout(id); };
  
  
          L.Util.requestAnimFrame = function (fn, context, immediate, element) {
              fn = L.bind(fn, context);
  
              if (immediate && requestFn === timeoutDefer) {
                  fn();
              } else {
                  return requestFn.call(window, fn, element);
              }
          };
  
          L.Util.cancelAnimFrame = function (id) {
              if (id) {
                  cancelFn.call(window, id);
              }
          };
  
      }());
  
      // shortcuts for most used utility functions
      L.extend = L.Util.extend;
      L.bind = L.Util.bind;
      L.stamp = L.Util.stamp;
      L.setOptions = L.Util.setOptions;
  
  
      /*
       * L.Class powers the OOP facilities of the library.
       * Thanks to John Resig and Dean Edwards for inspiration!
       */
  
      L.Class = function () { };
  
      L.Class.extend = function (props) {
  
          // extended class with the new prototype
          var NewClass = function () {
  
              // call the constructor
              if (this.initialize) {
                  this.initialize.apply(this, arguments);
              }
  
              // call all constructor hooks
              if (this._initHooks) {
                  this.callInitHooks();
              }
          };
  
          // instantiate class without calling constructor
          var F = function () { };
          F.prototype = this.prototype;
  
          var proto = new F();
          proto.constructor = NewClass;
  
          NewClass.prototype = proto;
  
          //inherit parent's statics
          for (var i in this) {
              if (this.hasOwnProperty(i) && i !== 'prototype') {
                  NewClass[i] = this[i];
              }
          }
  
          // mix static properties into the class
          if (props.statics) {
              L.extend(NewClass, props.statics);
              delete props.statics;
          }
  
          // mix includes into the prototype
          if (props.includes) {
              L.Util.extend.apply(null, [proto].concat(props.includes));
              delete props.includes;
          }
  
          // merge options
          if (props.options && proto.options) {
              props.options = L.extend({}, proto.options, props.options);
          }
  
          // mix given properties into the prototype
          L.extend(proto, props);
  
          proto._initHooks = [];
  
          var parent = this;
          // jshint camelcase: false
          NewClass.__super__ = parent.prototype;
  
          // add method for calling all hooks
          proto.callInitHooks = function () {
  
              if (this._initHooksCalled) { return; }
  
              if (parent.prototype.callInitHooks) {
                  parent.prototype.callInitHooks.call(this);
              }
  
              this._initHooksCalled = true;
  
              for (var i = 0, len = proto._initHooks.length; i < len; i++) {
                  proto._initHooks[i].call(this);
              }
          };
  
          return NewClass;
      };
  
  
      // method for adding properties to prototype
      L.Class.include = function (props) {
          L.extend(this.prototype, props);
      };
  
      // merge new default options to the Class
      L.Class.mergeOptions = function (options) {
          L.extend(this.prototype.options, options);
      };
  
      // add a constructor hook
      L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
          var args = Array.prototype.slice.call(arguments, 1);
  
          var init = typeof fn === 'function' ? fn : function () {
              this[fn].apply(this, args);
          };
  
          this.prototype._initHooks = this.prototype._initHooks || [];
          this.prototype._initHooks.push(init);
      };
  
  
      /*
       * L.Mixin.Events is used to add custom events functionality to Leaflet classes.
       */
  
      var eventsKey = '_leaflet_events';
  
      L.Mixin = {};
  
      L.Mixin.Events = {
  
          addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
  
              // types can be a map of types/handlers
              if (L.Util.invokeEach(types, this.addEventListener, this, fn, context)) { return this; }
  
              var events = this[eventsKey] = this[eventsKey] || {},
                  contextId = context && context !== this && L.stamp(context),
                  i, len, event, type, indexKey, indexLenKey, typeIndex;
  
              // types can be a string of space-separated words
              types = L.Util.splitWords(types);
  
              for (i = 0, len = types.length; i < len; i++) {
                  event = {
                      action: fn,
                      context: context || this
                  };
                  type = types[i];
  
                  if (contextId) {
                      // store listeners of a particular context in a separate hash (if it has an id)
                      // gives a major performance boost when removing thousands of map layers
  
                      indexKey = type + '_idx';
                      indexLenKey = indexKey + '_len';
  
                      typeIndex = events[indexKey] = events[indexKey] || {};
  
                      if (!typeIndex[contextId]) {
                          typeIndex[contextId] = [];
  
                          // keep track of the number of keys in the index to quickly check if it's empty
                          events[indexLenKey] = (events[indexLenKey] || 0) + 1;
                      }
  
                      typeIndex[contextId].push(event);
  
  
                  } else {
                      events[type] = events[type] || [];
                      events[type].push(event);
                  }
              }
  
              return this;
          },
  
          hasEventListeners: function (type) { // (String) -> Boolean
              var events = this[eventsKey];
              return !!events && ((type in events && events[type].length > 0) ||
                  (type + '_idx' in events && events[type + '_idx_len'] > 0));
          },
  
          removeEventListener: function (types, fn, context) { // ([String, Function, Object]) or (Object[, Object])
  
              if (!this[eventsKey]) {
                  return this;
              }
  
              if (!types) {
                  return this.clearAllEventListeners();
              }
  
              if (L.Util.invokeEach(types, this.removeEventListener, this, fn, context)) { return this; }
  
              var events = this[eventsKey],
                  contextId = context && context !== this && L.stamp(context),
                  i, len, type, listeners, j, indexKey, indexLenKey, typeIndex, removed;
  
              types = L.Util.splitWords(types);
  
              for (i = 0, len = types.length; i < len; i++) {
                  type = types[i];
                  indexKey = type + '_idx';
                  indexLenKey = indexKey + '_len';
  
                  typeIndex = events[indexKey];
  
                  if (!fn) {
                      // clear all listeners for a type if function isn't specified
                      delete events[type];
                      delete events[indexKey];
                      delete events[indexLenKey];
  
                  } else {
                      listeners = contextId && typeIndex ? typeIndex[contextId] : events[type];
  
                      if (listeners) {
                          for (j = listeners.length - 1; j >= 0; j--) {
                              if ((listeners[j].action === fn) && (!context || (listeners[j].context === context))) {
                                  removed = listeners.splice(j, 1);
                                  // set the old action to a no-op, because it is possible
                                  // that the listener is being iterated over as part of a dispatch
                                  removed[0].action = L.Util.falseFn;
                              }
                          }
  
                          if (context && typeIndex && (listeners.length === 0)) {
                              delete typeIndex[contextId];
                              events[indexLenKey]--;
                          }
                      }
                  }
              }
  
              return this;
          },
  
          clearAllEventListeners: function () {
              delete this[eventsKey];
              return this;
          },
  
          fireEvent: function (type, data) { // (String[, Object])
              if (!this.hasEventListeners(type)) {
                  return this;
              }
  
              var event = L.Util.extend({}, data, { type: type, target: this });
  
              var events = this[eventsKey],
                  listeners, i, len, typeIndex, contextId;
  
              if (events[type]) {
                  // make sure adding/removing listeners inside other listeners won't cause infinite loop
                  listeners = events[type].slice();
  
                  for (i = 0, len = listeners.length; i < len; i++) {
                      listeners[i].action.call(listeners[i].context, event);
                  }
              }
  
              // fire event for the context-indexed listeners as well
              typeIndex = events[type + '_idx'];
  
              for (contextId in typeIndex) {
                  listeners = typeIndex[contextId].slice();
  
                  if (listeners) {
                      for (i = 0, len = listeners.length; i < len; i++) {
                          listeners[i].action.call(listeners[i].context, event);
                      }
                  }
              }
  
              return this;
          },
  
          addOneTimeEventListener: function (types, fn, context) {
  
              if (L.Util.invokeEach(types, this.addOneTimeEventListener, this, fn, context)) { return this; }
  
              var handler = L.bind(function () {
                  this
                      .removeEventListener(types, fn, context)
                      .removeEventListener(types, handler, context);
              }, this);
  
              return this
                  .addEventListener(types, fn, context)
                  .addEventListener(types, handler, context);
          }
      };
  
      L.Mixin.Events.on = L.Mixin.Events.addEventListener;
      L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
      L.Mixin.Events.once = L.Mixin.Events.addOneTimeEventListener;
      L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
  
  
      /*
       * L.Browser handles different browser and feature detections for internal Leaflet use.
       */
  
      (function () {
  
          var ie = 'ActiveXObject' in window,
              ielt9 = ie && !document.addEventListener,
  
              // terrible browser detection to work around Safari / iOS / Android browser bugs
              ua = navigator.userAgent.toLowerCase(),
              webkit = ua.indexOf('webkit') !== -1,
              chrome = ua.indexOf('chrome') !== -1,
              phantomjs = ua.indexOf('phantom') !== -1,
              android = ua.indexOf('android') !== -1,
              android23 = ua.search('android [23]') !== -1,
              gecko = ua.indexOf('gecko') !== -1,
  
              mobile = typeof orientation !== undefined + '',
              msPointer = window.navigator && window.navigator.msPointerEnabled &&
                  window.navigator.msMaxTouchPoints && !window.PointerEvent,
              pointer = (window.PointerEvent && window.navigator.pointerEnabled && window.navigator.maxTouchPoints) ||
                  msPointer,
              retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
                  ('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
                      window.matchMedia('(min-resolution:144dpi)').matches),
  
              doc = document.documentElement,
              ie3d = ie && ('transition' in doc.style),
              webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23,
              gecko3d = 'MozPerspective' in doc.style,
              opera3d = 'OTransition' in doc.style,
              any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs;
  
  
          // PhantomJS has 'ontouchstart' in document.documentElement, but doesn't actually support touch.
          // https://github.com/Leaflet/Leaflet/pull/1434#issuecomment-13843151
  
          var touch = !window.L_NO_TOUCH && !phantomjs && (function () {
  
              var startName = 'ontouchstart';
  
              // IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.Pointer) or WebKit, etc.
              if (pointer || (startName in doc)) {
                  return true;
              }
  
              // Firefox/Gecko
              var div = document.createElement('div'),
                  supported = false;
  
              if (!div.setAttribute) {
                  return false;
              }
              div.setAttribute(startName, 'return;');
  
              if (typeof div[startName] === 'function') {
                  supported = true;
              }
  
              div.removeAttribute(startName);
              div = null;
  
              return supported;
          }());
  
  
          L.Browser = {
              ie: ie,
              ielt9: ielt9,
              webkit: webkit,
              gecko: gecko && !webkit && !window.opera && !ie,
  
              android: android,
              android23: android23,
  
              chrome: chrome,
  
              ie3d: ie3d,
              webkit3d: webkit3d,
              gecko3d: gecko3d,
              opera3d: opera3d,
              any3d: any3d,
  
              mobile: mobile,
              mobileWebkit: mobile && webkit,
              mobileWebkit3d: mobile && webkit3d,
              mobileOpera: mobile && window.opera,
  
              touch: touch,
              msPointer: msPointer,
              pointer: pointer,
  
              retina: retina
          };
  
      }());
  
  
      /*
       * L.Point represents a point with x and y coordinates.
       */
  
      L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
          this.x = (round ? Math.round(x) : x);
          this.y = (round ? Math.round(y) : y);
      };
  
      L.Point.prototype = {
  
          clone: function () {
              return new L.Point(this.x, this.y);
          },
  
          // non-destructive, returns a new point
          add: function (point) {
              return this.clone()._add(L.point(point));
          },
  
          // destructive, used directly for performance in situations where it's safe to modify existing point
          _add: function (point) {
              this.x += point.x;
              this.y += point.y;
              return this;
          },
  
          subtract: function (point) {
              return this.clone()._subtract(L.point(point));
          },
  
          _subtract: function (point) {
              this.x -= point.x;
              this.y -= point.y;
              return this;
          },
  
          divideBy: function (num) {
              return this.clone()._divideBy(num);
          },
  
          _divideBy: function (num) {
              this.x /= num;
              this.y /= num;
              return this;
          },
  
          multiplyBy: function (num) {
              return this.clone()._multiplyBy(num);
          },
  
          _multiplyBy: function (num) {
              this.x *= num;
              this.y *= num;
              return this;
          },
  
          round: function () {
              return this.clone()._round();
          },
  
          _round: function () {
              this.x = Math.round(this.x);
              this.y = Math.round(this.y);
              return this;
          },
  
          floor: function () {
              return this.clone()._floor();
          },
  
          _floor: function () {
              this.x = Math.floor(this.x);
              this.y = Math.floor(this.y);
              return this;
          },
  
          distanceTo: function (point) {
              point = L.point(point);
  
              var x = point.x - this.x,
                  y = point.y - this.y;
  
              return Math.sqrt(x * x + y * y);
          },
  
          equals: function (point) {
              point = L.point(point);
  
              return point.x === this.x &&
                  point.y === this.y;
          },
  
          contains: function (point) {
              point = L.point(point);
  
              return Math.abs(point.x) <= Math.abs(this.x) &&
                  Math.abs(point.y) <= Math.abs(this.y);
          },
  
          toString: function () {
              return 'Point(' +
                  L.Util.formatNum(this.x) + ', ' +
                  L.Util.formatNum(this.y) + ')';
          }
      };
  
      L.point = function (x, y, round) {
          if (x instanceof L.Point) {
              return x;
          }
          if (L.Util.isArray(x)) {
              return new L.Point(x[0], x[1]);
          }
          if (x === undefined || x === null) {
              return x;
          }
          return new L.Point(x, y, round);
      };
  
  
      /*
       * L.Bounds represents a rectangular area on the screen in pixel coordinates.
       */
  
      L.Bounds = function (a, b) { //(Point, Point) or Point[]
          if (!a) { return; }
  
          var points = b ? [a, b] : a;
  
          for (var i = 0, len = points.length; i < len; i++) {
              this.extend(points[i]);
          }
      };
  
      L.Bounds.prototype = {
          // extend the bounds to contain the given point
          extend: function (point) { // (Point)
              point = L.point(point);
  
              if (!this.min && !this.max) {
                  this.min = point.clone();
                  this.max = point.clone();
              } else {
                  this.min.x = Math.min(point.x, this.min.x);
                  this.max.x = Math.max(point.x, this.max.x);
                  this.min.y = Math.min(point.y, this.min.y);
                  this.max.y = Math.max(point.y, this.max.y);
              }
              return this;
          },
  
          getCenter: function (round) { // (Boolean) -> Point
              return new L.Point(
                  (this.min.x + this.max.x) / 2,
                  (this.min.y + this.max.y) / 2, round);
          },
  
          getBottomLeft: function () { // -> Point
              return new L.Point(this.min.x, this.max.y);
          },
  
          getTopRight: function () { // -> Point
              return new L.Point(this.max.x, this.min.y);
          },
  
          getSize: function () {
              return this.max.subtract(this.min);
          },
  
          contains: function (obj) { // (Bounds) or (Point) -> Boolean
              var min, max;
  
              if (typeof obj[0] === 'number' || obj instanceof L.Point) {
                  obj = L.point(obj);
              } else {
                  obj = L.bounds(obj);
              }
  
              if (obj instanceof L.Bounds) {
                  min = obj.min;
                  max = obj.max;
              } else {
                  min = max = obj;
              }
  
              return (min.x >= this.min.x) &&
                  (max.x <= this.max.x) &&
                  (min.y >= this.min.y) &&
                  (max.y <= this.max.y);
          },
  
          intersects: function (bounds) { // (Bounds) -> Boolean
              bounds = L.bounds(bounds);
  
              var min = this.min,
                  max = this.max,
                  min2 = bounds.min,
                  max2 = bounds.max,
                  xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
                  yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
  
              return xIntersects && yIntersects;
          },
  
          isValid: function () {
              return !!(this.min && this.max);
          }
      };
  
      L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
          if (!a || a instanceof L.Bounds) {
              return a;
          }
          return new L.Bounds(a, b);
      };
  
  
      /*
       * L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
       */
  
      L.Transformation = function (a, b, c, d) {
          this._a = a;
          this._b = b;
          this._c = c;
          this._d = d;
      };
  
      L.Transformation.prototype = {
          transform: function (point, scale) { // (Point, Number) -> Point
              return this._transform(point.clone(), scale);
          },
  
          // destructive transform (faster)
          _transform: function (point, scale) {
              scale = scale || 1;
              point.x = scale * (this._a * point.x + this._b);
              point.y = scale * (this._c * point.y + this._d);
              return point;
          },
  
          untransform: function (point, scale) {
              scale = scale || 1;
              return new L.Point(
                  (point.x / scale - this._b) / this._a,
                  (point.y / scale - this._d) / this._c);
          }
      };
  
  
      /*
       * L.DomUtil contains various utility functions for working with DOM.
       */
  
      L.DomUtil = {
          get: function (id) {
              return (typeof id === 'string' ? document.getElementById(id) : id);
          },
  
          getStyle: function (el, style) {
  
              var value = el.style[style];
  
              if (!value && el.currentStyle) {
                  value = el.currentStyle[style];
              }
  
              if ((!value || value === 'auto') && document.defaultView) {
                  var css = document.defaultView.getComputedStyle(el, null);
                  value = css ? css[style] : null;
              }
  
              return value === 'auto' ? null : value;
          },
  
          getViewportOffset: function (element) {
  
              var top = 0,
                  left = 0,
                  el = element,
                  docBody = document.body,
                  docEl = document.documentElement,
                  pos;
  
              do {
                  top += el.offsetTop || 0;
                  left += el.offsetLeft || 0;
  
                  //add borders
                  top += parseInt(L.DomUtil.getStyle(el, 'borderTopWidth'), 10) || 0;
                  left += parseInt(L.DomUtil.getStyle(el, 'borderLeftWidth'), 10) || 0;
  
                  pos = L.DomUtil.getStyle(el, 'position');
  
                  if (el.offsetParent === docBody && pos === 'absolute') { break; }
  
                  if (pos === 'fixed') {
                      top += docBody.scrollTop || docEl.scrollTop || 0;
                      left += docBody.scrollLeft || docEl.scrollLeft || 0;
                      break;
                  }
  
                  if (pos === 'relative' && !el.offsetLeft) {
                      var width = L.DomUtil.getStyle(el, 'width'),
                          maxWidth = L.DomUtil.getStyle(el, 'max-width'),
                          r = el.getBoundingClientRect();
  
                      if (width !== 'none' || maxWidth !== 'none') {
                          left += r.left + el.clientLeft;
                      }
  
                      //calculate full y offset since we're breaking out of the loop
                      top += r.top + (docBody.scrollTop || docEl.scrollTop || 0);
  
                      break;
                  }
  
                  el = el.offsetParent;
  
              } while (el);
  
              el = element;
  
              do {
                  if (el === docBody) { break; }
  
                  top -= el.scrollTop || 0;
                  left -= el.scrollLeft || 0;
  
                  el = el.parentNode;
              } while (el);
  
              return new L.Point(left, top);
          },
  
          documentIsLtr: function () {
              if (!L.DomUtil._docIsLtrCached) {
                  L.DomUtil._docIsLtrCached = true;
                  L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === 'ltr';
              }
              return L.DomUtil._docIsLtr;
          },
  
          create: function (tagName, className, container) {
  
              var el = document.createElement(tagName);
              el.className = className;
  
              if (container) {
                  container.appendChild(el);
              }
  
              return el;
          },
  
          hasClass: function (el, name) {
              if (el.classList !== undefined) {
                  return el.classList.contains(name);
              }
              var className = L.DomUtil._getClass(el);
              return className.length > 0 && new RegExp('(^|\\s)' + name + '(\\s|$)').test(className);
          },
  
          addClass: function (el, name) {
              if (el.classList !== undefined) {
                  var classes = L.Util.splitWords(name);
                  for (var i = 0, len = classes.length; i < len; i++) {
                      el.classList.add(classes[i]);
                  }
              } else if (!L.DomUtil.hasClass(el, name)) {
                  var className = L.DomUtil._getClass(el);
                  L.DomUtil._setClass(el, (className ? className + ' ' : '') + name);
              }
          },
  
          removeClass: function (el, name) {
              if (el.classList !== undefined) {
                  el.classList.remove(name);
              } else {
                  L.DomUtil._setClass(el, L.Util.trim((' ' + L.DomUtil._getClass(el) + ' ').replace(' ' + name + ' ', ' ')));
              }
          },
  
          _setClass: function (el, name) {
              if (el.className.baseVal === undefined) {
                  el.className = name;
              } else {
                  // in case of SVG element
                  el.className.baseVal = name;
              }
          },
  
          _getClass: function (el) {
              return el.className.baseVal === undefined ? el.className : el.className.baseVal;
          },
  
          setOpacity: function (el, value) {
  
              if ('opacity' in el.style) {
                  el.style.opacity = value;
  
              } else if ('filter' in el.style) {
  
                  var filter = false,
                      filterName = 'DXImageTransform.Microsoft.Alpha';
  
                  // filters collection throws an error if we try to retrieve a filter that doesn't exist
                  try {
                      filter = el.filters.item(filterName);
                  } catch (e) {
                      // don't set opacity to 1 if we haven't already set an opacity,
                      // it isn't needed and breaks transparent pngs.
                      if (value === 1) { return; }
                  }
  
                  value = Math.round(value * 100);
  
                  if (filter) {
                      filter.Enabled = (value !== 100);
                      filter.Opacity = value;
                  } else {
                      el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
                  }
              }
          },
  
          testProp: function (props) {
  
              var style = document.documentElement.style;
  
              for (var i = 0; i < props.length; i++) {
                  if (props[i] in style) {
                      return props[i];
                  }
              }
              return false;
          },
  
          getTranslateString: function (point) {
              // on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate
              // makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care
              // (same speed either way), Opera 12 doesn't support translate3d
  
              var is3d = L.Browser.webkit3d,
                  open = 'translate' + (is3d ? '3d' : '') + '(',
                  close = (is3d ? ',0' : '') + ')';
  
              return open + point.x + 'px,' + point.y + 'px' + close;
          },
  
          getScaleString: function (scale, origin) {
  
              var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))),
                  scaleStr = ' scale(' + scale + ') ';
  
              return preTranslateStr + scaleStr;
          },
  
          setPosition: function (el, point, disable3D) { // (HTMLElement, Point[, Boolean])
  
              // jshint camelcase: false
              el._leaflet_pos = point;
  
              if (!disable3D && L.Browser.any3d) {
                  el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point);
              } else {
                  el.style.left = point.x + 'px';
                  el.style.top = point.y + 'px';
              }
          },
  
          getPosition: function (el) {
              // this method is only used for elements previously positioned using setPosition,
              // so it's safe to cache the position for performance
  
              // jshint camelcase: false
              return el._leaflet_pos;
          }
      };
  
  
      // prefix style property names
  
      L.DomUtil.TRANSFORM = L.DomUtil.testProp(
          ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
  
      // webkitTransition comes first because some browser versions that drop vendor prefix don't do
      // the same for the transitionend event, in particular the Android 4.1 stock browser
  
      L.DomUtil.TRANSITION = L.DomUtil.testProp(
          ['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
  
      L.DomUtil.TRANSITION_END =
          L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ?
              L.DomUtil.TRANSITION + 'End' : 'transitionend';
  
      (function () {
          if ('onselectstart' in document) {
              L.extend(L.DomUtil, {
                  disableTextSelection: function () {
                      L.DomEvent.on(window, 'selectstart', L.DomEvent.preventDefault);
                  },
  
                  enableTextSelection: function () {
                      L.DomEvent.off(window, 'selectstart', L.DomEvent.preventDefault);
                  }
              });
          } else {
              var userSelectProperty = L.DomUtil.testProp(
                  ['userSelect', 'WebkitUserSelect', 'OUserSelect', 'MozUserSelect', 'msUserSelect']);
  
              L.extend(L.DomUtil, {
                  disableTextSelection: function () {
                      if (userSelectProperty) {
                          var style = document.documentElement.style;
                          this._userSelect = style[userSelectProperty];
                          style[userSelectProperty] = 'none';
                      }
                  },
  
                  enableTextSelection: function () {
                      if (userSelectProperty) {
                          document.documentElement.style[userSelectProperty] = this._userSelect;
                          delete this._userSelect;
                      }
                  }
              });
          }
  
          L.extend(L.DomUtil, {
              disableImageDrag: function () {
                  L.DomEvent.on(window, 'dragstart', L.DomEvent.preventDefault);
              },
  
              enableImageDrag: function () {
                  L.DomEvent.off(window, 'dragstart', L.DomEvent.preventDefault);
              }
          });
      })();
  
  
      /*
       * L.LatLng represents a geographical point with latitude and longitude coordinates.
       */
  
      L.LatLng = function (lat, lng, alt) { // (Number, Number, Number)
          lat = parseFloat(lat);
          lng = parseFloat(lng);
  
          if (isNaN(lat) || isNaN(lng)) {
              throw new Error('Invalid LatLng object: (' + lat + ', ' + lng + ')');
          }
  
          this.lat = lat;
          this.lng = lng;
  
          if (alt !== undefined) {
              this.alt = parseFloat(alt);
          }
      };
  
      L.extend(L.LatLng, {
          DEG_TO_RAD: Math.PI / 180,
          RAD_TO_DEG: 180 / Math.PI,
          MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
      });
  
      L.LatLng.prototype = {
          equals: function (obj) { // (LatLng) -> Boolean
              if (!obj) { return false; }
  
              obj = L.latLng(obj);
  
              var margin = Math.max(
                  Math.abs(this.lat - obj.lat),
                  Math.abs(this.lng - obj.lng));
  
              return margin <= L.LatLng.MAX_MARGIN;
          },
  
          toString: function (precision) { // (Number) -> String
              return 'LatLng(' +
                  L.Util.formatNum(this.lat, precision) + ', ' +
                  L.Util.formatNum(this.lng, precision) + ')';
          },
  
          // Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
          // TODO move to projection code, LatLng shouldn't know about Earth
          distanceTo: function (other) { // (LatLng) -> Number
              other = L.latLng(other);
  
              var R = 6378137, // earth radius in meters
                  d2r = L.LatLng.DEG_TO_RAD,
                  dLat = (other.lat - this.lat) * d2r,
                  dLon = (other.lng - this.lng) * d2r,
                  lat1 = this.lat * d2r,
                  lat2 = other.lat * d2r,
                  sin1 = Math.sin(dLat / 2),
                  sin2 = Math.sin(dLon / 2);
  
              var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
  
              return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
          },
  
          wrap: function (a, b) { // (Number, Number) -> LatLng
              var lng = this.lng;
  
              a = a || -180;
              b = b || 180;
  
              lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
  
              return new L.LatLng(this.lat, lng);
          }
      };
  
      L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
          if (a instanceof L.LatLng) {
              return a;
          }
          if (L.Util.isArray(a)) {
              if (typeof a[0] === 'number' || typeof a[0] === 'string') {
                  return new L.LatLng(a[0], a[1], a[2]);
              } else {
                  return null;
              }
          }
          if (a === undefined || a === null) {
              return a;
          }
          if (typeof a === 'object' && 'lat' in a) {
              return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon);
          }
          if (b === undefined) {
              return null;
          }
          return new L.LatLng(a, b);
      };
  
  
  
      /*
       * L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
       */
  
      L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
          if (!southWest) { return; }
  
          var latlngs = northEast ? [southWest, northEast] : southWest;
  
          for (var i = 0, len = latlngs.length; i < len; i++) {
              this.extend(latlngs[i]);
          }
      };
  
      L.LatLngBounds.prototype = {
          // extend the bounds to contain the given point or bounds
          extend: function (obj) { // (LatLng) or (LatLngBounds)
              if (!obj) { return this; }
  
              var latLng = L.latLng(obj);
              if (latLng !== null) {
                  obj = latLng;
              } else {
                  obj = L.latLngBounds(obj);
              }
  
              if (obj instanceof L.LatLng) {
                  if (!this._southWest && !this._northEast) {
                      this._southWest = new L.LatLng(obj.lat, obj.lng);
                      this._northEast = new L.LatLng(obj.lat, obj.lng);
                  } else {
                      this._southWest.lat = Math.min(obj.lat, this._southWest.lat);
                      this._southWest.lng = Math.min(obj.lng, this._southWest.lng);
  
                      this._northEast.lat = Math.max(obj.lat, this._northEast.lat);
                      this._northEast.lng = Math.max(obj.lng, this._northEast.lng);
                  }
              } else if (obj instanceof L.LatLngBounds) {
                  this.extend(obj._southWest);
                  this.extend(obj._northEast);
              }
              return this;
          },
  
          // extend the bounds by a percentage
          pad: function (bufferRatio) { // (Number) -> LatLngBounds
              var sw = this._southWest,
                  ne = this._northEast,
                  heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
                  widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
  
              return new L.LatLngBounds(
                  new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
                  new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
          },
  
          getCenter: function () { // -> LatLng
              return new L.LatLng(
                  (this._southWest.lat + this._northEast.lat) / 2,
                  (this._southWest.lng + this._northEast.lng) / 2);
          },
  
          getSouthWest: function () {
              return this._southWest;
          },
  
          getNorthEast: function () {
              return this._northEast;
          },
  
          getNorthWest: function () {
              return new L.LatLng(this.getNorth(), this.getWest());
          },
  
          getSouthEast: function () {
              return new L.LatLng(this.getSouth(), this.getEast());
          },
  
          getWest: function () {
              return this._southWest.lng;
          },
  
          getSouth: function () {
              return this._southWest.lat;
          },
  
          getEast: function () {
              return this._northEast.lng;
          },
  
          getNorth: function () {
              return this._northEast.lat;
          },
  
          contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
              if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
                  obj = L.latLng(obj);
              } else {
                  obj = L.latLngBounds(obj);
              }
  
              var sw = this._southWest,
                  ne = this._northEast,
                  sw2, ne2;
  
              if (obj instanceof L.LatLngBounds) {
                  sw2 = obj.getSouthWest();
                  ne2 = obj.getNorthEast();
              } else {
                  sw2 = ne2 = obj;
              }
  
              return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
                  (sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
          },
  
          intersects: function (bounds) { // (LatLngBounds)
              bounds = L.latLngBounds(bounds);
  
              var sw = this._southWest,
                  ne = this._northEast,
                  sw2 = bounds.getSouthWest(),
                  ne2 = bounds.getNorthEast(),
  
                  latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
                  lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
  
              return latIntersects && lngIntersects;
          },
  
          toBBoxString: function () {
              return [this.getWest(), this.getSouth(), this.getEast(), this.getNorth()].join(',');
          },
  
          equals: function (bounds) { // (LatLngBounds)
              if (!bounds) { return false; }
  
              bounds = L.latLngBounds(bounds);
  
              return this._southWest.equals(bounds.getSouthWest()) &&
                  this._northEast.equals(bounds.getNorthEast());
          },
  
          isValid: function () {
              return !!(this._southWest && this._northEast);
          }
      };
  
      //TODO International date line?
  
      L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
          if (!a || a instanceof L.LatLngBounds) {
              return a;
          }
          return new L.LatLngBounds(a, b);
      };
  
  
      /*
       * L.Projection contains various geographical projections used by CRS classes.
       */
  
      L.Projection = {};
  
  
      /*
       * Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
       */
  
      L.Projection.SphericalMercator = {
          MAX_LATITUDE: 85.0511287798,
  
          project: function (latlng) { // (LatLng) -> Point
              var d = L.LatLng.DEG_TO_RAD,
                  max = this.MAX_LATITUDE,
                  lat = Math.max(Math.min(max, latlng.lat), -max),
                  x = latlng.lng * d,
                  y = lat * d;
  
              y = Math.log(Math.tan((Math.PI / 4) + (y / 2)));
  
              return new L.Point(x, y);
          },
  
          unproject: function (point) { // (Point, Boolean) -> LatLng
              var d = L.LatLng.RAD_TO_DEG,
                  lng = point.x * d,
                  lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
  
              return new L.LatLng(lat, lng);
          }
      };
  
  
      /*
       * Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
       */
  
      L.Projection.LonLat = {
          project: function (latlng) {
              return new L.Point(latlng.lng, latlng.lat);
          },
  
          unproject: function (point) {
              return new L.LatLng(point.y, point.x);
          }
      };
  
  
      /*
       * L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
       */
  
      L.CRS = {
          latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point
              var projectedPoint = this.projection.project(latlng),
                  scale = this.scale(zoom);
  
              return this.transformation._transform(projectedPoint, scale);
          },
  
          pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng
              var scale = this.scale(zoom),
                  untransformedPoint = this.transformation.untransform(point, scale);
  
              return this.projection.unproject(untransformedPoint);
          },
  
          project: function (latlng) {
              return this.projection.project(latlng);
          },
  
          scale: function (zoom) {
              return 256 * Math.pow(2, zoom);
          },
  
          getSize: function (zoom) {
              var s = this.scale(zoom);
              return L.point(s, s);
          }
      };
  
  
      /*
       * A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
       */
  
      L.CRS.Simple = L.extend({}, L.CRS, {
          projection: L.Projection.LonLat,
          transformation: new L.Transformation(1, 0, -1, 0),
  
          scale: function (zoom) {
              return Math.pow(2, zoom);
          }
      });
  
  
      /*
       * L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping
       * and is used by Leaflet by default.
       */
  
      L.CRS.EPSG3857 = L.extend({}, L.CRS, {
          code: 'EPSG:3857',
  
          projection: L.Projection.SphericalMercator,
          transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5),
  
          project: function (latlng) { // (LatLng) -> Point
              var projectedPoint = this.projection.project(latlng),
                  earthRadius = 6378137;
              return projectedPoint.multiplyBy(earthRadius);
          }
      });
  
      L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
          code: 'EPSG:900913'
      });
  
  
      /*
       * L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
       */
  
      L.CRS.EPSG4326 = L.extend({}, L.CRS, {
          code: 'EPSG:4326',
  
          projection: L.Projection.LonLat,
          transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5)
      });
  
  
      /*
       * L.Map is the central class of the API - it is used to create a map.
       */
  
      L.Map = L.Class.extend({
  
          includes: L.Mixin.Events,
  
          options: {
              crs: L.CRS.EPSG3857,
  
              /*
               center: LatLng,
               zoom: Number,
               layers: Array,
               */
  
              fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23,
              trackResize: true,
              markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d
          },
  
          initialize: function (id, options) { // (HTMLElement or String, Object)
              options = L.setOptions(this, options);
  
  
              this._initContainer(id);
              this._initLayout();
  
              // hack for https://github.com/Leaflet/Leaflet/issues/1980
              this._onResize = L.bind(this._onResize, this);
  
              this._initEvents();
  
              if (options.maxBounds) {
                  this.setMaxBounds(options.maxBounds);
              }
  
              if (options.center && options.zoom !== undefined) {
                  this.setView(L.latLng(options.center), options.zoom, { reset: true });
              }
  
              this._handlers = [];
  
              this._layers = {};
              this._zoomBoundLayers = {};
              this._tileLayersNum = 0;
  
              this.callInitHooks();
  
              this._addLayers(options.layers);
          },
  
  
          // public methods that modify map state
  
          // replaced by animation-powered implementation in Map.PanAnimation.js
          setView: function (center, zoom) {
              zoom = zoom === undefined ? this.getZoom() : zoom;
              this._resetView(L.latLng(center), this._limitZoom(zoom));
              return this;
          },
  
          setZoom: function (zoom, options) {
              if (!this._loaded) {
                  this._zoom = this._limitZoom(zoom);
                  return this;
              }
              return this.setView(this.getCenter(), zoom, { zoom: options });
          },
  
          zoomIn: function (delta, options) {
              return this.setZoom(this._zoom + (delta || 1), options);
          },
  
          zoomOut: function (delta, options) {
              return this.setZoom(this._zoom - (delta || 1), options);
          },
  
          setZoomAround: function (latlng, zoom, options) {
              var scale = this.getZoomScale(zoom),
                  viewHalf = this.getSize().divideBy(2),
                  containerPoint = latlng instanceof L.Point ? latlng : this.latLngToContainerPoint(latlng),
  
                  centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
                  newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
  
              return this.setView(newCenter, zoom, { zoom: options });
          },
  
          fitBounds: function (bounds, options) {
  
              options = options || {};
              bounds = bounds.getBounds ? bounds.getBounds() : L.latLngBounds(bounds);
  
              var paddingTL = L.point(options.paddingTopLeft || options.padding || [0, 0]),
                  paddingBR = L.point(options.paddingBottomRight || options.padding || [0, 0]),
  
                  zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR)),
                  paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
  
                  swPoint = this.project(bounds.getSouthWest(), zoom),
                  nePoint = this.project(bounds.getNorthEast(), zoom),
                  center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
  
              zoom = options && options.maxZoom ? Math.min(options.maxZoom, zoom) : zoom;
  
              return this.setView(center, zoom, options);
          },
  
          fitWorld: function (options) {
              return this.fitBounds([[-90, -180], [90, 180]], options);
          },
  
          panTo: function (center, options) { // (LatLng)
              return this.setView(center, this._zoom, { pan: options });
          },
  
          panBy: function (offset) { // (Point)
              // replaced with animated panBy in Map.PanAnimation.js
              this.fire('movestart');
  
              this._rawPanBy(L.point(offset));
  
              this.fire('move');
              return this.fire('moveend');
          },
  
          setMaxBounds: function (bounds) {
              bounds = L.latLngBounds(bounds);
  
              this.options.maxBounds = bounds;
  
              if (!bounds) {
                  return this.off('moveend', this._panInsideMaxBounds, this);
              }
  
              if (this._loaded) {
                  this._panInsideMaxBounds();
              }
  
              return this.on('moveend', this._panInsideMaxBounds, this);
          },
  
          panInsideBounds: function (bounds, options) {
              var center = this.getCenter(),
                  newCenter = this._limitCenter(center, this._zoom, bounds);
  
              if (center.equals(newCenter)) { return this; }
  
              return this.panTo(newCenter, options);
          },
  
          addLayer: function (layer) {
              // TODO method is too big, refactor
  
              var id = L.stamp(layer);
  
              if (this._layers[id]) { return this; }
  
              this._layers[id] = layer;
  
              // TODO getMaxZoom, getMinZoom in ILayer (instead of options)
              if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) {
                  this._zoomBoundLayers[id] = layer;
                  this._updateZoomLevels();
              }
  
              // TODO looks ugly, refactor!!!
              if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
                  this._tileLayersNum++;
                  this._tileLayersToLoad++;
                  layer.on('load', this._onTileLayerLoad, this);
              }
  
              if (this._loaded) {
                  this._layerAdd(layer);
              }
  
              return this;
          },
  
          removeLayer: function (layer) {
              var id = L.stamp(layer);
  
              if (!this._layers[id]) { return this; }
  
              if (this._loaded) {
                  layer.onRemove(this);
              }
  
              delete this._layers[id];
  
              if (this._loaded) {
                  this.fire('layerremove', { layer: layer });
              }
  
              if (this._zoomBoundLayers[id]) {
                  delete this._zoomBoundLayers[id];
                  this._updateZoomLevels();
              }
  
              // TODO looks ugly, refactor
              if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
                  this._tileLayersNum--;
                  this._tileLayersToLoad--;
                  layer.off('load', this._onTileLayerLoad, this);
              }
  
              return this;
          },
  
          hasLayer: function (layer) {
              if (!layer) { return false; }
  
              return (L.stamp(layer) in this._layers);
          },
  
          eachLayer: function (method, context) {
              for (var i in this._layers) {
                  method.call(context, this._layers[i]);
              }
              return this;
          },
  
          invalidateSize: function (options) {
              if (!this._loaded) { return this; }
  
              options = L.extend({
                  animate: false,
                  pan: true
              }, options === true ? { animate: true } : options);
  
              var oldSize = this.getSize();
              this._sizeChanged = true;
              this._initialCenter = null;
  
              var newSize = this.getSize(),
                  oldCenter = oldSize.divideBy(2).round(),
                  newCenter = newSize.divideBy(2).round(),
                  offset = oldCenter.subtract(newCenter);
  
              if (!offset.x && !offset.y) { return this; }
  
              if (options.animate && options.pan) {
                  this.panBy(offset);
  
              } else {
                  if (options.pan) {
                      this._rawPanBy(offset);
                  }
  
                  this.fire('move');
  
                  if (options.debounceMoveend) {
                      clearTimeout(this._sizeTimer);
                      this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
                  } else {
                      this.fire('moveend');
                  }
              }
  
              return this.fire('resize', {
                  oldSize: oldSize,
                  newSize: newSize
              });
          },
  
          // TODO handler.addTo
          addHandler: function (name, HandlerClass) {
              if (!HandlerClass) { return this; }
  
              var handler = this[name] = new HandlerClass(this);
  
              this._handlers.push(handler);
  
              if (this.options[name]) {
                  handler.enable();
              }
  
              return this;
          },
  
          remove: function () {
              if (this._loaded) {
                  this.fire('unload');
              }
  
              this._initEvents('off');
  
              try {
                  // throws error in IE6-8
                  delete this._container._leaflet;
              } catch (e) {
                  this._container._leaflet = undefined;
              }
  
              this._clearPanes();
              if (this._clearControlPos) {
                  this._clearControlPos();
              }
  
              this._clearHandlers();
  
              return this;
          },
  
  
          // public methods for getting map state
  
          getCenter: function () { // (Boolean) -> LatLng
              this._checkIfLoaded();
  
              if (this._initialCenter && !this._moved()) {
                  return this._initialCenter;
              }
              return this.layerPointToLatLng(this._getCenterLayerPoint());
          },
  
          getZoom: function () {
              return this._zoom;
          },
  
          getBounds: function () {
              var bounds = this.getPixelBounds(),
                  sw = this.unproject(bounds.getBottomLeft()),
                  ne = this.unproject(bounds.getTopRight());
  
              return new L.LatLngBounds(sw, ne);
          },
  
          getMinZoom: function () {
              return this.options.minZoom === undefined ?
                  (this._layersMinZoom === undefined ? 0 : this._layersMinZoom) :
                  this.options.minZoom;
          },
  
          getMaxZoom: function () {
              return this.options.maxZoom === undefined ?
                  (this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
                  this.options.maxZoom;
          },
  
          getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
              bounds = L.latLngBounds(bounds);
  
              var zoom = this.getMinZoom() - (inside ? 1 : 0),
                  maxZoom = this.getMaxZoom(),
                  size = this.getSize(),
  
                  nw = bounds.getNorthWest(),
                  se = bounds.getSouthEast(),
  
                  zoomNotFound = true,
                  boundsSize;
  
              padding = L.point(padding || [0, 0]);
  
              do {
                  zoom++;
                  boundsSize = this.project(se, zoom).subtract(this.project(nw, zoom)).add(padding);
                  zoomNotFound = !inside ? size.contains(boundsSize) : boundsSize.x < size.x || boundsSize.y < size.y;
  
              } while (zoomNotFound && zoom <= maxZoom);
  
              if (zoomNotFound && inside) {
                  return null;
              }
  
              return inside ? zoom : zoom - 1;
          },
  
          getSize: function () {
              if (!this._size || this._sizeChanged) {
                  this._size = new L.Point(
                      this._container.clientWidth,
                      this._container.clientHeight);
  
                  this._sizeChanged = false;
              }
              return this._size.clone();
          },
  
          getPixelBounds: function () {
              var topLeftPoint = this._getTopLeftPoint();
              return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
          },
  
          getPixelOrigin: function () {
              this._checkIfLoaded();
              return this._initialTopLeftPoint;
          },
  
          getPanes: function () {
              return this._panes;
          },
  
          getContainer: function () {
              return this._container;
          },
  
  
          // TODO replace with universal implementation after refactoring projections
  
          getZoomScale: function (toZoom) {
              var crs = this.options.crs;
              return crs.scale(toZoom) / crs.scale(this._zoom);
          },
  
          getScaleZoom: function (scale) {
              return this._zoom + (Math.log(scale) / Math.LN2);
          },
  
  
          // conversion methods
  
          project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
              zoom = zoom === undefined ? this._zoom : zoom;
              return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
          },
  
          unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
              zoom = zoom === undefined ? this._zoom : zoom;
              return this.options.crs.pointToLatLng(L.point(point), zoom);
          },
  
          layerPointToLatLng: function (point) { // (Point)
              var projectedPoint = L.point(point).add(this.getPixelOrigin());
              return this.unproject(projectedPoint);
          },
  
          latLngToLayerPoint: function (latlng) { // (LatLng)
              var projectedPoint = this.project(L.latLng(latlng))._round();
              return projectedPoint._subtract(this.getPixelOrigin());
          },
  
          containerPointToLayerPoint: function (point) { // (Point)
              return L.point(point).subtract(this._getMapPanePos());
          },
  
          layerPointToContainerPoint: function (point) { // (Point)
              return L.point(point).add(this._getMapPanePos());
          },
  
          containerPointToLatLng: function (point) {
              var layerPoint = this.containerPointToLayerPoint(L.point(point));
              return this.layerPointToLatLng(layerPoint);
          },
  
          latLngToContainerPoint: function (latlng) {
              return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
          },
  
          mouseEventToContainerPoint: function (e) { // (MouseEvent)
              return L.DomEvent.getMousePosition(e, this._container);
          },
  
          mouseEventToLayerPoint: function (e) { // (MouseEvent)
              return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
          },
  
          mouseEventToLatLng: function (e) { // (MouseEvent)
              return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
          },
  
  
          // map initialization methods
  
          _initContainer: function (id) {
              var container = this._container = L.DomUtil.get(id);
  
              if (!container) {
                  throw new Error('Map container not found.');
              } else if (container._leaflet) {
                  throw new Error('Map container is already initialized.');
              }
  
              container._leaflet = true;
          },
  
          _initLayout: function () {
              var container = this._container;
  
              L.DomUtil.addClass(container, 'leaflet-container' +
                  (L.Browser.touch ? ' leaflet-touch' : '') +
                  (L.Browser.retina ? ' leaflet-retina' : '') +
                  (L.Browser.ielt9 ? ' leaflet-oldie' : '') +
                  (this.options.fadeAnimation ? ' leaflet-fade-anim' : ''));
  
              var position = L.DomUtil.getStyle(container, 'position');
  
              if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
                  container.style.position = 'relative';
              }
  
              if (this._initControlPos) {
                  this._initControlPos();
              }
  
              this._initPanes();
  
          },
  
          _initPanes: function () {
              var panes = this._panes = {};
  
              this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
  
              this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
              panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
              panes.shadowPane = this._createPane('leaflet-shadow-pane');
              panes.overlayPane = this._createPane('leaflet-overlay-pane');
              panes.markerPane = this._createPane('leaflet-marker-pane');
              panes.popupPane = this._createPane('leaflet-popup-pane');
  
              var zoomHide = ' leaflet-zoom-hide';
  
              if (!this.options.markerZoomAnimation) {
                  L.DomUtil.addClass(panes.markerPane, zoomHide);
                  L.DomUtil.addClass(panes.shadowPane, zoomHide);
                  L.DomUtil.addClass(panes.popupPane, zoomHide);
              }
          },
  
          _createPane: function (className, container) {
              return L.DomUtil.create('div', className, container || this._panes.objectsPane);
          },
  
          _clearPanes: function () {
              this._container.removeChild(this._mapPane);
          },
  
          _addLayers: function (layers) {
              layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
  
              for (var i = 0, len = layers.length; i < len; i++) {
                  this.addLayer(layers[i]);
              }
          },
  
  
          // private methods that modify map state
  
          _resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
  
              var zoomChanged = (this._zoom !== zoom);
  
              if (!afterZoomAnim) {
                  this.fire('movestart');
  
                  if (zoomChanged) {
                      this.fire('zoomstart');
                  }
              }
  
              this._zoom = zoom;
              this._initialCenter = center;
  
              this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
  
              if (!preserveMapOffset) {
                  L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
              } else {
                  this._initialTopLeftPoint._add(this._getMapPanePos());
              }
  
              this._tileLayersToLoad = this._tileLayersNum;
  
              var loading = !this._loaded;
              this._loaded = true;
  
              this.fire('viewreset', { hard: !preserveMapOffset });
  
              if (loading) {
                  this.fire('load');
                  this.eachLayer(this._layerAdd, this);
              }
  
              this.fire('move');
  
              if (zoomChanged || afterZoomAnim) {
                  this.fire('zoomend');
              }
  
              this.fire('moveend', { hard: !preserveMapOffset });
          },
  
          _rawPanBy: function (offset) {
              L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
          },
  
          _getZoomSpan: function () {
              return this.getMaxZoom() - this.getMinZoom();
          },
  
          _updateZoomLevels: function () {
              var i,
                  minZoom = Infinity,
                  maxZoom = -Infinity,
                  oldZoomSpan = this._getZoomSpan();
  
              for (i in this._zoomBoundLayers) {
                  var layer = this._zoomBoundLayers[i];
                  if (!isNaN(layer.options.minZoom)) {
                      minZoom = Math.min(minZoom, layer.options.minZoom);
                  }
                  if (!isNaN(layer.options.maxZoom)) {
                      maxZoom = Math.max(maxZoom, layer.options.maxZoom);
                  }
              }
  
              if (i === undefined) { // we have no tilelayers
                  this._layersMaxZoom = this._layersMinZoom = undefined;
              } else {
                  this._layersMaxZoom = maxZoom;
                  this._layersMinZoom = minZoom;
              }
  
              if (oldZoomSpan !== this._getZoomSpan()) {
                  this.fire('zoomlevelschange');
              }
          },
  
          _panInsideMaxBounds: function () {
              this.panInsideBounds(this.options.maxBounds);
          },
  
          _checkIfLoaded: function () {
              if (!this._loaded) {
                  throw new Error('Set map center and zoom first.');
              }
          },
  
          // map events
  
          _initEvents: function (onOff) {
              if (!L.DomEvent) { return; }
  
              onOff = onOff || 'on';
  
              L.DomEvent[onOff](this._container, 'click', this._onMouseClick, this);
  
              var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter',
                  'mouseleave', 'mousemove', 'contextmenu'],
                  i, len;
  
              for (i = 0, len = events.length; i < len; i++) {
                  L.DomEvent[onOff](this._container, events[i], this._fireMouseEvent, this);
              }
  
              if (this.options.trackResize) {
                  L.DomEvent[onOff](window, 'resize', this._onResize, this);
              }
          },
  
          _onResize: function () {
              L.Util.cancelAnimFrame(this._resizeRequest);
              this._resizeRequest = L.Util.requestAnimFrame(
                  function () { this.invalidateSize({ debounceMoveend: true }); }, this, false, this._container);
          },
  
          _onMouseClick: function (e) {
              if (!this._loaded || (!e._simulated &&
                  ((this.dragging && this.dragging.moved()) ||
                      (this.boxZoom && this.boxZoom.moved()))) ||
                  L.DomEvent._skipped(e)) { return; }
  
              this.fire('preclick');
              this._fireMouseEvent(e);
          },
  
          _fireMouseEvent: function (e) {
              if (!this._loaded || L.DomEvent._skipped(e)) { return; }
  
              var type = e.type;
  
              type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
  
              if (!this.hasEventListeners(type)) { return; }
  
              if (type === 'contextmenu') {
                  L.DomEvent.preventDefault(e);
              }
  
              var containerPoint = this.mouseEventToContainerPoint(e),
                  layerPoint = this.containerPointToLayerPoint(containerPoint),
                  latlng = this.layerPointToLatLng(layerPoint);
  
              this.fire(type, {
                  latlng: latlng,
                  layerPoint: layerPoint,
                  containerPoint: containerPoint,
                  originalEvent: e
              });
          },
  
          _onTileLayerLoad: function () {
              this._tileLayersToLoad--;
              if (this._tileLayersNum && !this._tileLayersToLoad) {
                  this.fire('tilelayersload');
              }
          },
  
          _clearHandlers: function () {
              for (var i = 0, len = this._handlers.length; i < len; i++) {
                  this._handlers[i].disable();
              }
          },
  
          whenReady: function (callback, context) {
              if (this._loaded) {
                  callback.call(context || this, this);
              } else {
                  this.on('load', callback, context);
              }
              return this;
          },
  
          _layerAdd: function (layer) {
              layer.onAdd(this);
              this.fire('layeradd', { layer: layer });
          },
  
  
          // private methods for getting map state
  
          _getMapPanePos: function () {
              return L.DomUtil.getPosition(this._mapPane);
          },
  
          _moved: function () {
              var pos = this._getMapPanePos();
              return pos && !pos.equals([0, 0]);
          },
  
          _getTopLeftPoint: function () {
              return this.getPixelOrigin().subtract(this._getMapPanePos());
          },
  
          _getNewTopLeftPoint: function (center, zoom) {
              var viewHalf = this.getSize()._divideBy(2);
              // TODO round on display, not calculation to increase precision?
              return this.project(center, zoom)._subtract(viewHalf)._round();
          },
  
          _latLngToNewLayerPoint: function (latlng, newZoom, newCenter) {
              var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos());
              return this.project(latlng, newZoom)._subtract(topLeft);
          },
  
          // layer point of the current center
          _getCenterLayerPoint: function () {
              return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
          },
  
          // offset of the specified place to the current center in pixels
          _getCenterOffset: function (latlng) {
              return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
          },
  
          // adjust center for view to get inside bounds
          _limitCenter: function (center, zoom, bounds) {
  
              if (!bounds) { return center; }
  
              var centerPoint = this.project(center, zoom),
                  viewHalf = this.getSize().divideBy(2),
                  viewBounds = new L.Bounds(centerPoint.subtract(viewHalf), centerPoint.add(viewHalf)),
                  offset = this._getBoundsOffset(viewBounds, bounds, zoom);
  
              return this.unproject(centerPoint.add(offset), zoom);
          },
  
          // adjust offset for view to get inside bounds
          _limitOffset: function (offset, bounds) {
              if (!bounds) { return offset; }
  
              var viewBounds = this.getPixelBounds(),
                  newBounds = new L.Bounds(viewBounds.min.add(offset), viewBounds.max.add(offset));
  
              return offset.add(this._getBoundsOffset(newBounds, bounds));
          },
  
          // returns offset needed for pxBounds to get inside maxBounds at a specified zoom
          _getBoundsOffset: function (pxBounds, maxBounds, zoom) {
              var nwOffset = this.project(maxBounds.getNorthWest(), zoom).subtract(pxBounds.min),
                  seOffset = this.project(maxBounds.getSouthEast(), zoom).subtract(pxBounds.max),
  
                  dx = this._rebound(nwOffset.x, -seOffset.x),
                  dy = this._rebound(nwOffset.y, -seOffset.y);
  
              return new L.Point(dx, dy);
          },
  
          _rebound: function (left, right) {
              return left + right > 0 ?
                  Math.round(left - right) / 2 :
                  Math.max(0, Math.ceil(left)) - Math.max(0, Math.floor(right));
          },
  
          _limitZoom: function (zoom) {
              var min = this.getMinZoom(),
                  max = this.getMaxZoom();
  
              return Math.max(min, Math.min(max, zoom));
          }
      });
  
      L.map = function (id, options) {
          return new L.Map(id, options);
      };
  
  
      /*
       * Mercator projection that takes into account that the Earth is not a perfect sphere.
       * Less popular than spherical mercator; used by projections like EPSG:3395.
       */
  
      L.Projection.Mercator = {
          MAX_LATITUDE: 85.0840591556,
  
          R_MINOR: 6356752.314245179,
          R_MAJOR: 6378137,
  
          project: function (latlng) { // (LatLng) -> Point
              var d = L.LatLng.DEG_TO_RAD,
                  max = this.MAX_LATITUDE,
                  lat = Math.max(Math.min(max, latlng.lat), -max),
                  r = this.R_MAJOR,
                  r2 = this.R_MINOR,
                  x = latlng.lng * d * r,
                  y = lat * d,
                  tmp = r2 / r,
                  eccent = Math.sqrt(1.0 - tmp * tmp),
                  con = eccent * Math.sin(y);
  
              con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
  
              var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
              y = -r * Math.log(ts);
  
              return new L.Point(x, y);
          },
  
          unproject: function (point) { // (Point, Boolean) -> LatLng
              var d = L.LatLng.RAD_TO_DEG,
                  r = this.R_MAJOR,
                  r2 = this.R_MINOR,
                  lng = point.x * d / r,
                  tmp = r2 / r,
                  eccent = Math.sqrt(1 - (tmp * tmp)),
                  ts = Math.exp(- point.y / r),
                  phi = (Math.PI / 2) - 2 * Math.atan(ts),
                  numIter = 15,
                  tol = 1e-7,
                  i = numIter,
                  dphi = 0.1,
                  con;
  
              while ((Math.abs(dphi) > tol) && (--i > 0)) {
                  con = eccent * Math.sin(phi);
                  dphi = (Math.PI / 2) - 2 * Math.atan(ts *
                      Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
                  phi += dphi;
              }
  
              return new L.LatLng(phi * d, lng);
          }
      };
  
  
  
      L.CRS.EPSG3395 = L.extend({}, L.CRS, {
          code: 'EPSG:3395',
  
          projection: L.Projection.Mercator,
  
          transformation: (function () {
              var m = L.Projection.Mercator,
                  r = m.R_MAJOR,
                  scale = 0.5 / (Math.PI * r);
  
              return new L.Transformation(scale, 0.5, -scale, 0.5);
          }())
      });
  
  
      /*
       * L.TileLayer is used for standard xyz-numbered tile layers.
       */
  
      L.TileLayer = L.Class.extend({
          includes: L.Mixin.Events,
  
          options: {
              minZoom: 0,
              maxZoom: 18,
              tileSize: 256,
              subdomains: 'abc',
              errorTileUrl: '',
              attribution: '',
              zoomOffset: 0,
              opacity: 1,
              /*
               maxNativeZoom: null,
               zIndex: null,
               tms: false,
               continuousWorld: false,
               noWrap: false,
               zoomReverse: false,
               detectRetina: false,
               reuseTiles: false,
               bounds: false,
               */
              unloadInvisibleTiles: L.Browser.mobile,
              updateWhenIdle: L.Browser.mobile
          },
  
          initialize: function (url, options) {
              options = L.setOptions(this, options);
  
              // detecting retina displays, adjusting tileSize and zoom levels
              if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
  
                  options.tileSize = Math.floor(options.tileSize / 2);
                  options.zoomOffset++;
  
                  if (options.minZoom > 0) {
                      options.minZoom--;
                  }
                  this.options.maxZoom--;
              }
  
              if (options.bounds) {
                  options.bounds = L.latLngBounds(options.bounds);
              }
  
              this._url = url;
  
              var subdomains = this.options.subdomains;
  
              if (typeof subdomains === 'string') {
                  this.options.subdomains = subdomains.split('');
              }
          },
  
          onAdd: function (map) {
              this._map = map;
              this._animated = map._zoomAnimated;
  
              // create a container div for tiles
              this._initContainer();
  
              // set up events
              map.on({
                  'viewreset': this._reset,
                  'moveend': this._update
              }, this);
  
              if (this._animated) {
                  map.on({
                      'zoomanim': this._animateZoom,
                      'zoomend': this._endZoomAnim
                  }, this);
              }
  
              if (!this.options.updateWhenIdle) {
                  this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
                  map.on('move', this._limitedUpdate, this);
              }
  
              this._reset();
              this._update();
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          onRemove: function (map) {
              this._container.parentNode.removeChild(this._container);
  
              map.off({
                  'viewreset': this._reset,
                  'moveend': this._update
              }, this);
  
              if (this._animated) {
                  map.off({
                      'zoomanim': this._animateZoom,
                      'zoomend': this._endZoomAnim
                  }, this);
              }
  
              if (!this.options.updateWhenIdle) {
                  map.off('move', this._limitedUpdate, this);
              }
  
              this._container = null;
              this._map = null;
          },
  
          bringToFront: function () {
              var pane = this._map._panes.tilePane;
  
              if (this._container) {
                  pane.appendChild(this._container);
                  this._setAutoZIndex(pane, Math.max);
              }
  
              return this;
          },
  
          bringToBack: function () {
              var pane = this._map._panes.tilePane;
  
              if (this._container) {
                  pane.insertBefore(this._container, pane.firstChild);
                  this._setAutoZIndex(pane, Math.min);
              }
  
              return this;
          },
  
          getAttribution: function () {
              return this.options.attribution;
          },
  
          getContainer: function () {
              return this._container;
          },
  
          setOpacity: function (opacity) {
              this.options.opacity = opacity;
  
              if (this._map) {
                  this._updateOpacity();
              }
  
              return this;
          },
  
          setZIndex: function (zIndex) {
              this.options.zIndex = zIndex;
              this._updateZIndex();
  
              return this;
          },
  
          setUrl: function (url, noRedraw) {
              this._url = url;
  
              if (!noRedraw) {
                  this.redraw();
              }
  
              return this;
          },
  
          redraw: function () {
              if (this._map) {
                  this._reset({ hard: true });
                  this._update();
              }
              return this;
          },
  
          _updateZIndex: function () {
              if (this._container && this.options.zIndex !== undefined) {
                  this._container.style.zIndex = this.options.zIndex;
              }
          },
  
          _setAutoZIndex: function (pane, compare) {
  
              var layers = pane.children,
                  edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min
                  zIndex, i, len;
  
              for (i = 0, len = layers.length; i < len; i++) {
  
                  if (layers[i] !== this._container) {
                      zIndex = parseInt(layers[i].style.zIndex, 10);
  
                      if (!isNaN(zIndex)) {
                          edgeZIndex = compare(edgeZIndex, zIndex);
                      }
                  }
              }
  
              this.options.zIndex = this._container.style.zIndex =
                  (isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1);
          },
  
          _updateOpacity: function () {
              var i,
                  tiles = this._tiles;
  
              if (L.Browser.ielt9) {
                  for (i in tiles) {
                      L.DomUtil.setOpacity(tiles[i], this.options.opacity);
                  }
              } else {
                  L.DomUtil.setOpacity(this._container, this.options.opacity);
              }
          },
  
          _initContainer: function () {
              var tilePane = this._map._panes.tilePane;
  
              if (!this._container) {
                  this._container = L.DomUtil.create('div', 'leaflet-layer');
  
                  this._updateZIndex();
  
                  if (this._animated) {
                      var className = 'leaflet-tile-container';
  
                      this._bgBuffer = L.DomUtil.create('div', className, this._container);
                      this._tileContainer = L.DomUtil.create('div', className, this._container);
  
                  } else {
                      this._tileContainer = this._container;
                  }
  
                  tilePane.appendChild(this._container);
  
                  if (this.options.opacity < 1) {
                      this._updateOpacity();
                  }
              }
          },
  
          _reset: function (e) {
              for (var key in this._tiles) {
                  this.fire('tileunload', { tile: this._tiles[key] });
              }
  
              this._tiles = {};
              this._tilesToLoad = 0;
  
              if (this.options.reuseTiles) {
                  this._unusedTiles = [];
              }
  
              this._tileContainer.innerHTML = '';
  
              if (this._animated && e && e.hard) {
                  this._clearBgBuffer();
              }
  
              this._initContainer();
          },
  
          _getTileSize: function () {
              var map = this._map,
                  zoom = map.getZoom() + this.options.zoomOffset,
                  zoomN = this.options.maxNativeZoom,
                  tileSize = this.options.tileSize;
  
              if (zoomN && zoom > zoomN) {
                  tileSize = Math.round(map.getZoomScale(zoom) / map.getZoomScale(zoomN) * tileSize);
              }
  
              return tileSize;
          },
  
          _update: function () {
  
              if (!this._map) { return; }
  
              var map = this._map,
                  bounds = map.getPixelBounds(),
                  zoom = map.getZoom(),
                  tileSize = this._getTileSize();
  
              if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
                  return;
              }
  
              var tileBounds = L.bounds(
                  bounds.min.divideBy(tileSize)._floor(),
                  bounds.max.divideBy(tileSize)._floor());
  
              this._addTilesFromCenterOut(tileBounds);
  
              if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
                  this._removeOtherTiles(tileBounds);
              }
          },
  
          _addTilesFromCenterOut: function (bounds) {
              var queue = [],
                  center = bounds.getCenter();
  
              var j, i, point;
  
              for (j = bounds.min.y; j <= bounds.max.y; j++) {
                  for (i = bounds.min.x; i <= bounds.max.x; i++) {
                      point = new L.Point(i, j);
  
                      if (this._tileShouldBeLoaded(point)) {
                          queue.push(point);
                      }
                  }
              }
  
              var tilesToLoad = queue.length;
  
              if (tilesToLoad === 0) { return; }
  
              // load tiles in order of their distance to center
              queue.sort(function (a, b) {
                  return a.distanceTo(center) - b.distanceTo(center);
              });
  
              var fragment = document.createDocumentFragment();
  
              // if its the first batch of tiles to load
              if (!this._tilesToLoad) {
                  this.fire('loading');
              }
  
              this._tilesToLoad += tilesToLoad;
  
              for (i = 0; i < tilesToLoad; i++) {
                  this._addTile(queue[i], fragment);
              }
  
              this._tileContainer.appendChild(fragment);
          },
  
          _tileShouldBeLoaded: function (tilePoint) {
              if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
                  return false; // already loaded
              }
  
              var options = this.options;
  
              if (!options.continuousWorld) {
                  var limit = this._getWrapTileNum();
  
                  // don't load if exceeds world bounds
                  if ((options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit.x)) ||
                      tilePoint.y < 0 || tilePoint.y >= limit.y) { return false; }
              }
  
              if (options.bounds) {
                  var tileSize = options.tileSize,
                      nwPoint = tilePoint.multiplyBy(tileSize),
                      sePoint = nwPoint.add([tileSize, tileSize]),
                      nw = this._map.unproject(nwPoint),
                      se = this._map.unproject(sePoint);
  
                  // TODO temporary hack, will be removed after refactoring projections
                  // https://github.com/Leaflet/Leaflet/issues/1618
                  if (!options.continuousWorld && !options.noWrap) {
                      nw = nw.wrap();
                      se = se.wrap();
                  }
  
                  if (!options.bounds.intersects([nw, se])) { return false; }
              }
  
              return true;
          },
  
          _removeOtherTiles: function (bounds) {
              var kArr, x, y, key;
  
              for (key in this._tiles) {
                  kArr = key.split(':');
                  x = parseInt(kArr[0], 10);
                  y = parseInt(kArr[1], 10);
  
                  // remove tile if it's out of bounds
                  if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
                      this._removeTile(key);
                  }
              }
          },
  
          _removeTile: function (key) {
              var tile = this._tiles[key];
  
              this.fire('tileunload', { tile: tile, url: tile.src });
  
              if (this.options.reuseTiles) {
                  L.DomUtil.removeClass(tile, 'leaflet-tile-loaded');
                  this._unusedTiles.push(tile);
  
              } else if (tile.parentNode === this._tileContainer) {
                  this._tileContainer.removeChild(tile);
              }
  
              // for https://github.com/CloudMade/Leaflet/issues/137
              if (!L.Browser.android) {
                  tile.onload = null;
                  tile.src = L.Util.emptyImageUrl;
              }
  
              delete this._tiles[key];
          },
  
          _addTile: function (tilePoint, container) {
              var tilePos = this._getTilePos(tilePoint);
  
              // get unused tile - or create a new tile
              var tile = this._getTile();
  
              /*
               Chrome 20 layouts much faster with top/left (verify with timeline, frames)
               Android 4 browser has display issues with top/left and requires transform instead
               (other browsers don't currently care) - see debug/hacks/jitter.html for an example
               */
              L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome);
  
              this._tiles[tilePoint.x + ':' + tilePoint.y] = tile;
  
              this._loadTile(tile, tilePoint);
  
              if (tile.parentNode !== this._tileContainer) {
                  container.appendChild(tile);
              }
          },
  
          _getZoomForUrl: function () {
  
              var options = this.options,
                  zoom = this._map.getZoom();
  
              if (options.zoomReverse) {
                  zoom = options.maxZoom - zoom;
              }
  
              zoom += options.zoomOffset;
  
              return options.maxNativeZoom ? Math.min(zoom, options.maxNativeZoom) : zoom;
          },
  
          _getTilePos: function (tilePoint) {
              var origin = this._map.getPixelOrigin(),
                  tileSize = this._getTileSize();
  
              return tilePoint.multiplyBy(tileSize).subtract(origin);
          },
  
          // image-specific code (override to implement e.g. Canvas or SVG tile layer)
  
          getTileUrl: function (tilePoint) {
              return L.Util.template(this._url, L.extend({
                  s: this._getSubdomain(tilePoint),
                  z: tilePoint.z,
                  x: tilePoint.x,
                  y: tilePoint.y
              }, this.options));
          },
  
          _getWrapTileNum: function () {
              var crs = this._map.options.crs,
                  size = crs.getSize(this._map.getZoom());
              return size.divideBy(this._getTileSize())._floor();
          },
  
          _adjustTilePoint: function (tilePoint) {
  
              var limit = this._getWrapTileNum();
  
              // wrap tile coordinates
              if (!this.options.continuousWorld && !this.options.noWrap) {
                  tilePoint.x = ((tilePoint.x % limit.x) + limit.x) % limit.x;
              }
  
              if (this.options.tms) {
                  tilePoint.y = limit.y - tilePoint.y - 1;
              }
  
              tilePoint.z = this._getZoomForUrl();
          },
  
          _getSubdomain: function (tilePoint) {
              var index = Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length;
              return this.options.subdomains[index];
          },
  
          _getTile: function () {
              if (this.options.reuseTiles && this._unusedTiles.length > 0) {
                  var tile = this._unusedTiles.pop();
                  this._resetTile(tile);
                  return tile;
              }
              return this._createTile();
          },
  
          // Override if data stored on a tile needs to be cleaned up before reuse
          _resetTile: function (/*tile*/) { },
  
          _createTile: function () {
              var tile = L.DomUtil.create('img', 'leaflet-tile');
              tile.style.width = tile.style.height = this._getTileSize() + 'px';
              tile.galleryimg = 'no';
  
              tile.onselectstart = tile.onmousemove = L.Util.falseFn;
  
              if (L.Browser.ielt9 && this.options.opacity !== undefined) {
                  L.DomUtil.setOpacity(tile, this.options.opacity);
              }
              // without this hack, tiles disappear after zoom on Chrome for Android
              // https://github.com/Leaflet/Leaflet/issues/2078
              if (L.Browser.mobileWebkit3d) {
                  tile.style.WebkitBackfaceVisibility = 'hidden';
              }
              return tile;
          },
  
          _loadTile: function (tile, tilePoint) {
              tile._layer = this;
              tile.onload = this._tileOnLoad;
              tile.onerror = this._tileOnError;
  
              this._adjustTilePoint(tilePoint);
              tile.src = this.getTileUrl(tilePoint);
  
              this.fire('tileloadstart', {
                  tile: tile,
                  url: tile.src
              });
          },
  
          _tileLoaded: function () {
              this._tilesToLoad--;
  
              if (this._animated) {
                  L.DomUtil.addClass(this._tileContainer, 'leaflet-zoom-animated');
              }
  
              if (!this._tilesToLoad) {
                  this.fire('load');
  
                  if (this._animated) {
                      // clear scaled tiles after all new tiles are loaded (for performance)
                      clearTimeout(this._clearBgBufferTimer);
                      this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 500);
                  }
              }
          },
  
          _tileOnLoad: function () {
              var layer = this._layer;
  
              //Only if we are loading an actual image
              if (this.src !== L.Util.emptyImageUrl) {
                  L.DomUtil.addClass(this, 'leaflet-tile-loaded');
  
                  layer.fire('tileload', {
                      tile: this,
                      url: this.src
                  });
              }
  
              layer._tileLoaded();
          },
  
          _tileOnError: function () {
              var layer = this._layer;
  
              layer.fire('tileerror', {
                  tile: this,
                  url: this.src
              });
  
              var newUrl = layer.options.errorTileUrl;
              if (newUrl) {
                  this.src = newUrl;
              }
  
              layer._tileLoaded();
          }
      });
  
      L.tileLayer = function (url, options) {
          return new L.TileLayer(url, options);
      };
  
  
      /*
       * L.TileLayer.WMS is used for putting WMS tile layers on the map.
       */
  
      L.TileLayer.WMS = L.TileLayer.extend({
  
          defaultWmsParams: {
              service: 'WMS',
              request: 'GetMap',
              version: '1.1.1',
              layers: '',
              styles: '',
              format: 'image/jpeg',
              transparent: false
          },
  
          initialize: function (url, options) { // (String, Object)
  
              this._url = url;
  
              var wmsParams = L.extend({}, this.defaultWmsParams),
                  tileSize = options.tileSize || this.options.tileSize;
  
              if (options.detectRetina && L.Browser.retina) {
                  wmsParams.width = wmsParams.height = tileSize * 2;
              } else {
                  wmsParams.width = wmsParams.height = tileSize;
              }
  
              for (var i in options) {
                  // all keys that are not TileLayer options go to WMS params
                  if (!this.options.hasOwnProperty(i) && i !== 'crs') {
                      wmsParams[i] = options[i];
                  }
              }
  
              this.wmsParams = wmsParams;
  
              L.setOptions(this, options);
          },
  
          onAdd: function (map) {
  
              this._crs = this.options.crs || map.options.crs;
  
              this._wmsVersion = parseFloat(this.wmsParams.version);
  
              var projectionKey = this._wmsVersion >= 1.3 ? 'crs' : 'srs';
              this.wmsParams[projectionKey] = this._crs.code;
  
              L.TileLayer.prototype.onAdd.call(this, map);
          },
  
          getTileUrl: function (tilePoint) { // (Point, Number) -> String
  
              var map = this._map,
                  tileSize = this.options.tileSize,
  
                  nwPoint = tilePoint.multiplyBy(tileSize),
                  sePoint = nwPoint.add([tileSize, tileSize]),
  
                  nw = this._crs.project(map.unproject(nwPoint, tilePoint.z)),
                  se = this._crs.project(map.unproject(sePoint, tilePoint.z)),
                  bbox = this._wmsVersion >= 1.3 && this._crs === L.CRS.EPSG4326 ?
                      [se.y, nw.x, nw.y, se.x].join(',') :
                      [nw.x, se.y, se.x, nw.y].join(','),
  
                  url = L.Util.template(this._url, { s: this._getSubdomain(tilePoint) });
  
              return url + L.Util.getParamString(this.wmsParams, url, true) + '&BBOX=' + bbox;
          },
  
          setParams: function (params, noRedraw) {
  
              L.extend(this.wmsParams, params);
  
              if (!noRedraw) {
                  this.redraw();
              }
  
              return this;
          }
      });
  
      L.tileLayer.wms = function (url, options) {
          return new L.TileLayer.WMS(url, options);
      };
  
  
      /*
       * L.TileLayer.Canvas is a class that you can use as a base for creating
       * dynamically drawn Canvas-based tile layers.
       */
  
      L.TileLayer.Canvas = L.TileLayer.extend({
          options: {
              async: false
          },
  
          initialize: function (options) {
              L.setOptions(this, options);
          },
  
          redraw: function () {
              if (this._map) {
                  this._reset({ hard: true });
                  this._update();
              }
  
              for (var i in this._tiles) {
                  this._redrawTile(this._tiles[i]);
              }
              return this;
          },
  
          _redrawTile: function (tile) {
              this.drawTile(tile, tile._tilePoint, this._map._zoom);
          },
  
          _createTile: function () {
              var tile = L.DomUtil.create('canvas', 'leaflet-tile');
              tile.width = tile.height = this.options.tileSize;
              tile.onselectstart = tile.onmousemove = L.Util.falseFn;
              return tile;
          },
  
          _loadTile: function (tile, tilePoint) {
              tile._layer = this;
              tile._tilePoint = tilePoint;
  
              this._redrawTile(tile);
  
              if (!this.options.async) {
                  this.tileDrawn(tile);
              }
          },
  
          drawTile: function (/*tile, tilePoint*/) {
              // override with rendering code
          },
  
          tileDrawn: function (tile) {
              this._tileOnLoad.call(tile);
          }
      });
  
  
      L.tileLayer.canvas = function (options) {
          return new L.TileLayer.Canvas(options);
      };
  
  
      /*
       * L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
       */
  
      L.ImageOverlay = L.Class.extend({
          includes: L.Mixin.Events,
  
          options: {
              opacity: 1
          },
  
          initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
              this._url = url;
              this._bounds = L.latLngBounds(bounds);
  
              L.setOptions(this, options);
          },
  
          onAdd: function (map) {
              this._map = map;
  
              if (!this._image) {
                  this._initImage();
              }
  
              map._panes.overlayPane.appendChild(this._image);
  
              map.on('viewreset', this._reset, this);
  
              if (map.options.zoomAnimation && L.Browser.any3d) {
                  map.on('zoomanim', this._animateZoom, this);
              }
  
              this._reset();
          },
  
          onRemove: function (map) {
              map.getPanes().overlayPane.removeChild(this._image);
  
              map.off('viewreset', this._reset, this);
  
              if (map.options.zoomAnimation) {
                  map.off('zoomanim', this._animateZoom, this);
              }
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          setOpacity: function (opacity) {
              this.options.opacity = opacity;
              this._updateOpacity();
              return this;
          },
  
          // TODO remove bringToFront/bringToBack duplication from TileLayer/Path
          bringToFront: function () {
              if (this._image) {
                  this._map._panes.overlayPane.appendChild(this._image);
              }
              return this;
          },
  
          bringToBack: function () {
              var pane = this._map._panes.overlayPane;
              if (this._image) {
                  pane.insertBefore(this._image, pane.firstChild);
              }
              return this;
          },
  
          setUrl: function (url) {
              this._url = url;
              this._image.src = this._url;
          },
  
          getAttribution: function () {
              return this.options.attribution;
          },
  
          _initImage: function () {
              this._image = L.DomUtil.create('img', 'leaflet-image-layer');
  
              if (this._map.options.zoomAnimation && L.Browser.any3d) {
                  L.DomUtil.addClass(this._image, 'leaflet-zoom-animated');
              } else {
                  L.DomUtil.addClass(this._image, 'leaflet-zoom-hide');
              }
  
              this._updateOpacity();
  
              //TODO createImage util method to remove duplication
              L.extend(this._image, {
                  galleryimg: 'no',
                  onselectstart: L.Util.falseFn,
                  onmousemove: L.Util.falseFn,
                  onload: L.bind(this._onImageLoad, this),
                  src: this._url
              });
          },
  
          _animateZoom: function (e) {
              var map = this._map,
                  image = this._image,
                  scale = map.getZoomScale(e.zoom),
                  nw = this._bounds.getNorthWest(),
                  se = this._bounds.getSouthEast(),
  
                  topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center),
                  size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft),
                  origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale)));
  
              image.style[L.DomUtil.TRANSFORM] =
                  L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') ';
          },
  
          _reset: function () {
              var image = this._image,
                  topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
                  size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft);
  
              L.DomUtil.setPosition(image, topLeft);
  
              image.style.width = size.x + 'px';
              image.style.height = size.y + 'px';
          },
  
          _onImageLoad: function () {
              this.fire('load');
          },
  
          _updateOpacity: function () {
              L.DomUtil.setOpacity(this._image, this.options.opacity);
          }
      });
  
      L.imageOverlay = function (url, bounds, options) {
          return new L.ImageOverlay(url, bounds, options);
      };
  
  
      /*
       * L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
       */
  
      L.Icon = L.Class.extend({
          options: {
              /*
               iconUrl: (String) (required)
               iconRetinaUrl: (String) (optional, used for retina devices if detected)
               iconSize: (Point) (can be set through CSS)
               iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
               popupAnchor: (Point) (if not specified, popup opens in the anchor point)
               shadowUrl: (String) (no shadow by default)
               shadowRetinaUrl: (String) (optional, used for retina devices if detected)
               shadowSize: (Point)
               shadowAnchor: (Point)
               */
              className: ''
          },
  
          initialize: function (options) {
              L.setOptions(this, options);
          },
  
          createIcon: function (oldIcon) {
              return this._createIcon('icon', oldIcon);
          },
  
          createShadow: function (oldIcon) {
              return this._createIcon('shadow', oldIcon);
          },
  
          _createIcon: function (name, oldIcon) {
              var src = this._getIconUrl(name);
  
              if (!src) {
                  if (name === 'icon') {
                      throw new Error('iconUrl not set in Icon options (see the docs).');
                  }
                  return null;
              }
  
              var img;
              if (!oldIcon || oldIcon.tagName !== 'IMG') {
                  img = this._createImg(src);
              } else {
                  img = this._createImg(src, oldIcon);
              }
              this._setIconStyles(img, name);
  
              return img;
          },
  
          _setIconStyles: function (img, name) {
              var options = this.options,
                  size = L.point(options[name + 'Size']),
                  anchor;
  
              if (name === 'shadow') {
                  anchor = L.point(options.shadowAnchor || options.iconAnchor);
              } else {
                  anchor = L.point(options.iconAnchor);
              }
  
              if (!anchor && size) {
                  anchor = size.divideBy(2, true);
              }
  
              img.className = 'leaflet-marker-' + name + ' ' + options.className;
  
              if (anchor) {
                  img.style.marginLeft = (-anchor.x) + 'px';
                  img.style.marginTop = (-anchor.y) + 'px';
              }
  
              if (size) {
                  img.style.width = size.x + 'px';
                  img.style.height = size.y + 'px';
              }
          },
  
          _createImg: function (src, el) {
              el = el || document.createElement('img');
              el.src = src;
              return el;
          },
  
          _getIconUrl: function (name) {
              if (L.Browser.retina && this.options[name + 'RetinaUrl']) {
                  return this.options[name + 'RetinaUrl'];
              }
              return this.options[name + 'Url'];
          }
      });
  
      L.icon = function (options) {
          return new L.Icon(options);
      };
  
  
      /*
       * L.Icon.Default is the blue marker icon used by default in Leaflet.
       */
  
      L.Icon.Default = L.Icon.extend({
  
          options: {
              iconSize: [25, 41],
              iconAnchor: [12, 41],
              popupAnchor: [1, -34],
  
              shadowSize: [41, 41]
          },
  
          _getIconUrl: function (name) {
              var key = name + 'Url';
  
              if (this.options[key]) {
                  return this.options[key];
              }
  
              if (L.Browser.retina && name === 'icon') {
                  name += '-2x';
              }
  
              var path = L.Icon.Default.imagePath;
  
              if (!path) {
                  throw new Error('Couldn\'t autodetect L.Icon.Default.imagePath, set it manually.');
              }
  
              return path + '/marker-' + name + '.png';
          }
      });
  
      L.Icon.Default.imagePath = (function () {
          var scripts = document.getElementsByTagName('script'),
              leafletRe = /[\/^]leaflet[\-\._]?([\w\-\._]*)\.js\??/;
  
          var i, len, src, matches, path;
  
          for (i = 0, len = scripts.length; i < len; i++) {
              src = scripts[i].src;
              matches = src.match(leafletRe);
  
              if (matches) {
                  path = src.split(leafletRe)[0];
                  return (path ? path + '/' : '') + 'images';
              }
          }
      }());
  
  
      /*
       * L.Marker is used to display clickable/draggable icons on the map.
       */
  
      L.Marker = L.Class.extend({
  
          includes: L.Mixin.Events,
  
          options: {
              icon: new L.Icon.Default(),
              title: '',
              alt: '',
              clickable: true,
              draggable: false,
              keyboard: true,
              zIndexOffset: 0,
              opacity: 1,
              riseOnHover: false,
              riseOffset: 250
          },
  
          initialize: function (latlng, options) {
              L.setOptions(this, options);
              this._latlng = L.latLng(latlng);
          },
  
          onAdd: function (map) {
              this._map = map;
  
              map.on('viewreset', this.update, this);
  
              this._initIcon();
              this.update();
              this.fire('add');
  
              if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
                  map.on('zoomanim', this._animateZoom, this);
              }
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          onRemove: function (map) {
              if (this.dragging) {
                  this.dragging.disable();
              }
  
              this._removeIcon();
              this._removeShadow();
  
              this.fire('remove');
  
              map.off({
                  'viewreset': this.update,
                  'zoomanim': this._animateZoom
              }, this);
  
              this._map = null;
          },
  
          getLatLng: function () {
              return this._latlng;
          },
  
          setLatLng: function (latlng) {
              this._latlng = L.latLng(latlng);
  
              this.update();
  
              return this.fire('move', { latlng: this._latlng });
          },
  
          setZIndexOffset: function (offset) {
              this.options.zIndexOffset = offset;
              this.update();
  
              return this;
          },
  
          setIcon: function (icon) {
  
              this.options.icon = icon;
  
              if (this._map) {
                  this._initIcon();
                  this.update();
              }
  
              if (this._popup) {
                  this.bindPopup(this._popup);
              }
  
              return this;
          },
  
          update: function () {
              if (this._icon) {
                  var pos = this._map.latLngToLayerPoint(this._latlng).round();
                  this._setPos(pos);
              }
  
              return this;
          },
  
          _initIcon: function () {
              var options = this.options,
                  map = this._map,
                  animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
                  classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide';
  
              var icon = options.icon.createIcon(this._icon),
                  addIcon = false;
  
              // if we're not reusing the icon, remove the old one and init new one
              if (icon !== this._icon) {
                  if (this._icon) {
                      this._removeIcon();
                  }
                  addIcon = true;
  
                  if (options.title) {
                      icon.title = options.title;
                  }
  
                  if (options.alt) {
                      icon.alt = options.alt;
                  }
              }
  
              L.DomUtil.addClass(icon, classToAdd);
  
              if (options.keyboard) {
                  icon.tabIndex = '0';
              }
  
              this._icon = icon;
  
              this._initInteraction();
  
              if (options.riseOnHover) {
                  L.DomEvent
                      .on(icon, 'mouseover', this._bringToFront, this)
                      .on(icon, 'mouseout', this._resetZIndex, this);
              }
  
              var newShadow = options.icon.createShadow(this._shadow),
                  addShadow = false;
  
              if (newShadow !== this._shadow) {
                  this._removeShadow();
                  addShadow = true;
              }
  
              if (newShadow) {
                  L.DomUtil.addClass(newShadow, classToAdd);
              }
              this._shadow = newShadow;
  
  
              if (options.opacity < 1) {
                  this._updateOpacity();
              }
  
  
              var panes = this._map._panes;
  
              if (addIcon) {
                  panes.markerPane.appendChild(this._icon);
              }
  
              if (newShadow && addShadow) {
                  panes.shadowPane.appendChild(this._shadow);
              }
          },
  
          _removeIcon: function () {
              if (this.options.riseOnHover) {
                  L.DomEvent
                      .off(this._icon, 'mouseover', this._bringToFront)
                      .off(this._icon, 'mouseout', this._resetZIndex);
              }
  
              this._map._panes.markerPane.removeChild(this._icon);
  
              this._icon = null;
          },
  
          _removeShadow: function () {
              if (this._shadow) {
                  this._map._panes.shadowPane.removeChild(this._shadow);
              }
              this._shadow = null;
          },
  
          _setPos: function (pos) {
              L.DomUtil.setPosition(this._icon, pos);
  
              if (this._shadow) {
                  L.DomUtil.setPosition(this._shadow, pos);
              }
  
              this._zIndex = pos.y + this.options.zIndexOffset;
  
              this._resetZIndex();
          },
  
          _updateZIndex: function (offset) {
              this._icon.style.zIndex = this._zIndex + offset;
          },
  
          _animateZoom: function (opt) {
              var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center).round();
  
              this._setPos(pos);
          },
  
          _initInteraction: function () {
  
              if (!this.options.clickable) { return; }
  
              // TODO refactor into something shared with Map/Path/etc. to DRY it up
  
              var icon = this._icon,
                  events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu'];
  
              L.DomUtil.addClass(icon, 'leaflet-clickable');
              L.DomEvent.on(icon, 'click', this._onMouseClick, this);
              L.DomEvent.on(icon, 'keypress', this._onKeyPress, this);
  
              for (var i = 0; i < events.length; i++) {
                  L.DomEvent.on(icon, events[i], this._fireMouseEvent, this);
              }
  
              if (L.Handler.MarkerDrag) {
                  this.dragging = new L.Handler.MarkerDrag(this);
  
                  if (this.options.draggable) {
                      this.dragging.enable();
                  }
              }
          },
  
          _onMouseClick: function (e) {
              var wasDragged = this.dragging && this.dragging.moved();
  
              if (this.hasEventListeners(e.type) || wasDragged) {
                  L.DomEvent.stopPropagation(e);
              }
  
              if (wasDragged) { return; }
  
              if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; }
  
              this.fire(e.type, {
                  originalEvent: e,
                  latlng: this._latlng
              });
          },
  
          _onKeyPress: function (e) {
              if (e.keyCode === 13) {
                  this.fire('click', {
                      originalEvent: e,
                      latlng: this._latlng
                  });
              }
          },
  
          _fireMouseEvent: function (e) {
  
              this.fire(e.type, {
                  originalEvent: e,
                  latlng: this._latlng
              });
  
              // TODO proper custom event propagation
              // this line will always be called if marker is in a FeatureGroup
              if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) {
                  L.DomEvent.preventDefault(e);
              }
              if (e.type !== 'mousedown') {
                  L.DomEvent.stopPropagation(e);
              } else {
                  L.DomEvent.preventDefault(e);
              }
          },
  
          setOpacity: function (opacity) {
              this.options.opacity = opacity;
              if (this._map) {
                  this._updateOpacity();
              }
  
              return this;
          },
  
          _updateOpacity: function () {
              L.DomUtil.setOpacity(this._icon, this.options.opacity);
              if (this._shadow) {
                  L.DomUtil.setOpacity(this._shadow, this.options.opacity);
              }
          },
  
          _bringToFront: function () {
              this._updateZIndex(this.options.riseOffset);
          },
  
          _resetZIndex: function () {
              this._updateZIndex(0);
          }
      });
  
      L.marker = function (latlng, options) {
          return new L.Marker(latlng, options);
      };
  
  
      /*
       * L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
       * to use with L.Marker.
       */
  
      L.DivIcon = L.Icon.extend({
          options: {
              iconSize: [12, 12], // also can be set through CSS
              /*
               iconAnchor: (Point)
               popupAnchor: (Point)
               html: (String)
               bgPos: (Point)
               */
              className: 'leaflet-div-icon',
              html: false
          },
  
          createIcon: function (oldIcon) {
              var div = (oldIcon && oldIcon.tagName === 'DIV') ? oldIcon : document.createElement('div'),
                  options = this.options;
  
              if (options.html !== false) {
                  div.innerHTML = options.html;
              } else {
                  div.innerHTML = '';
              }
  
              if (options.bgPos) {
                  div.style.backgroundPosition =
                      (-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
              }
  
              this._setIconStyles(div, 'icon');
              return div;
          },
  
          createShadow: function () {
              return null;
          }
      });
  
      L.divIcon = function (options) {
          return new L.DivIcon(options);
      };
  
  
      /*
       * L.Popup is used for displaying popups on the map.
       */
  
      L.Map.mergeOptions({
          closePopupOnClick: true
      });
  
      L.Popup = L.Class.extend({
          includes: L.Mixin.Events,
  
          options: {
              minWidth: 50,
              maxWidth: 300,
              // maxHeight: null,
              autoPan: true,
              closeButton: true,
              offset: [0, 7],
              autoPanPadding: [5, 5],
              // autoPanPaddingTopLeft: null,
              // autoPanPaddingBottomRight: null,
              keepInView: false,
              className: '',
              zoomAnimation: true
          },
  
          initialize: function (options, source) {
              L.setOptions(this, options);
  
              this._source = source;
              this._animated = L.Browser.any3d && this.options.zoomAnimation;
              this._isOpen = false;
          },
  
          onAdd: function (map) {
              this._map = map;
  
              if (!this._container) {
                  this._initLayout();
              }
  
              var animFade = map.options.fadeAnimation;
  
              if (animFade) {
                  L.DomUtil.setOpacity(this._container, 0);
              }
              map._panes.popupPane.appendChild(this._container);
  
              map.on(this._getEvents(), this);
  
              this.update();
  
              if (animFade) {
                  L.DomUtil.setOpacity(this._container, 1);
              }
  
              this.fire('open');
  
              map.fire('popupopen', { popup: this });
  
              if (this._source) {
                  this._source.fire('popupopen', { popup: this });
              }
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          openOn: function (map) {
              map.openPopup(this);
              return this;
          },
  
          onRemove: function (map) {
              map._panes.popupPane.removeChild(this._container);
  
              L.Util.falseFn(this._container.offsetWidth); // force reflow
  
              map.off(this._getEvents(), this);
  
              if (map.options.fadeAnimation) {
                  L.DomUtil.setOpacity(this._container, 0);
              }
  
              this._map = null;
  
              this.fire('close');
  
              map.fire('popupclose', { popup: this });
  
              if (this._source) {
                  this._source.fire('popupclose', { popup: this });
              }
          },
  
          getLatLng: function () {
              return this._latlng;
          },
  
          setLatLng: function (latlng) {
              this._latlng = L.latLng(latlng);
              if (this._map) {
                  this._updatePosition();
                  this._adjustPan();
              }
              return this;
          },
  
          getContent: function () {
              return this._content;
          },
  
          setContent: function (content) {
              this._content = content;
              this.update();
              return this;
          },
  
          update: function () {
              if (!this._map) { return; }
  
              this._container.style.visibility = 'hidden';
  
              this._updateContent();
              this._updateLayout();
              this._updatePosition();
  
              this._container.style.visibility = '';
  
              this._adjustPan();
          },
  
          _getEvents: function () {
              var events = {
                  viewreset: this._updatePosition
              };
  
              if (this._animated) {
                  events.zoomanim = this._zoomAnimation;
              }
              if ('closeOnClick' in this.options ? this.options.closeOnClick : this._map.options.closePopupOnClick) {
                  events.preclick = this._close;
              }
              if (this.options.keepInView) {
                  events.moveend = this._adjustPan;
              }
  
              return events;
          },
  
          _close: function () {
              if (this._map) {
                  this._map.closePopup(this);
              }
          },
  
          _initLayout: function () {
              var prefix = 'leaflet-popup',
                  containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' +
                      (this._animated ? 'animated' : 'hide'),
                  container = this._container = L.DomUtil.create('div', containerClass),
                  closeButton;
  
              if (this.options.closeButton) {
                  closeButton = this._closeButton =
                      L.DomUtil.create('a', prefix + '-close-button', container);
                  closeButton.href = '#close';
                  closeButton.innerHTML = '&#215;';
                  L.DomEvent.disableClickPropagation(closeButton);
  
                  L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
              }
  
              var wrapper = this._wrapper =
                  L.DomUtil.create('div', prefix + '-content-wrapper', container);
              L.DomEvent.disableClickPropagation(wrapper);
  
              this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
  
              L.DomEvent.disableScrollPropagation(this._contentNode);
              L.DomEvent.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
  
              this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
              this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
          },
  
          _updateContent: function () {
              if (!this._content) { return; }
  
              if (typeof this._content === 'string') {
                  this._contentNode.innerHTML = this._content;
              } else {
                  while (this._contentNode.hasChildNodes()) {
                      this._contentNode.removeChild(this._contentNode.firstChild);
                  }
                  this._contentNode.appendChild(this._content);
              }
              this.fire('contentupdate');
          },
  
          _updateLayout: function () {
              var container = this._contentNode,
                  style = container.style;
  
              style.width = '';
              style.whiteSpace = 'nowrap';
  
              var width = container.offsetWidth;
              width = Math.min(width, this.options.maxWidth);
              width = Math.max(width, this.options.minWidth);
  
              style.width = (width + 1) + 'px';
              style.whiteSpace = '';
  
              style.height = '';
  
              var height = container.offsetHeight,
                  maxHeight = this.options.maxHeight,
                  scrolledClass = 'leaflet-popup-scrolled';
  
              if (maxHeight && height > maxHeight) {
                  style.height = maxHeight + 'px';
                  L.DomUtil.addClass(container, scrolledClass);
              } else {
                  L.DomUtil.removeClass(container, scrolledClass);
              }
  
              this._containerWidth = this._container.offsetWidth;
          },
  
          _updatePosition: function () {
              if (!this._map) { return; }
  
              var pos = this._map.latLngToLayerPoint(this._latlng),
                  animated = this._animated,
                  offset = L.point(this.options.offset);
  
              if (animated) {
                  L.DomUtil.setPosition(this._container, pos);
              }
  
              this._containerBottom = -offset.y - (animated ? 0 : pos.y);
              this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x);
  
              // bottom position the popup in case the height of the popup changes (images loading etc)
              this._container.style.bottom = this._containerBottom + 'px';
              this._container.style.left = this._containerLeft + 'px';
          },
  
          _zoomAnimation: function (opt) {
              var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
  
              L.DomUtil.setPosition(this._container, pos);
          },
  
          _adjustPan: function () {
              if (!this.options.autoPan) { return; }
  
              var map = this._map,
                  containerHeight = this._container.offsetHeight,
                  containerWidth = this._containerWidth,
  
                  layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
  
              if (this._animated) {
                  layerPos._add(L.DomUtil.getPosition(this._container));
              }
  
              var containerPos = map.layerPointToContainerPoint(layerPos),
                  padding = L.point(this.options.autoPanPadding),
                  paddingTL = L.point(this.options.autoPanPaddingTopLeft || padding),
                  paddingBR = L.point(this.options.autoPanPaddingBottomRight || padding),
                  size = map.getSize(),
                  dx = 0,
                  dy = 0;
  
              if (containerPos.x + containerWidth + paddingBR.x > size.x) { // right
                  dx = containerPos.x + containerWidth - size.x + paddingBR.x;
              }
              if (containerPos.x - dx - paddingTL.x < 0) { // left
                  dx = containerPos.x - paddingTL.x;
              }
              if (containerPos.y + containerHeight + paddingBR.y > size.y) { // bottom
                  dy = containerPos.y + containerHeight - size.y + paddingBR.y;
              }
              if (containerPos.y - dy - paddingTL.y < 0) { // top
                  dy = containerPos.y - paddingTL.y;
              }
  
              if (dx || dy) {
                  map
                      .fire('autopanstart')
                      .panBy([dx, dy]);
              }
          },
  
          _onCloseButtonClick: function (e) {
              this._close();
              L.DomEvent.stop(e);
          }
      });
  
      L.popup = function (options, source) {
          return new L.Popup(options, source);
      };
  
  
      L.Map.include({
          openPopup: function (popup, latlng, options) { // (Popup) or (String || HTMLElement, LatLng[, Object])
              this.closePopup();
  
              if (!(popup instanceof L.Popup)) {
                  var content = popup;
  
                  popup = new L.Popup(options)
                      .setLatLng(latlng)
                      .setContent(content);
              }
              popup._isOpen = true;
  
              this._popup = popup;
              return this.addLayer(popup);
          },
  
          closePopup: function (popup) {
              if (!popup || popup === this._popup) {
                  popup = this._popup;
                  this._popup = null;
              }
              if (popup) {
                  this.removeLayer(popup);
                  popup._isOpen = false;
              }
              return this;
          }
      });
  
  
      /*
       * Popup extension to L.Marker, adding popup-related methods.
       */
  
      L.Marker.include({
          openPopup: function () {
              if (this._popup && this._map && !this._map.hasLayer(this._popup)) {
                  this._popup.setLatLng(this._latlng);
                  this._map.openPopup(this._popup);
              }
  
              return this;
          },
  
          closePopup: function () {
              if (this._popup) {
                  this._popup._close();
              }
              return this;
          },
  
          togglePopup: function () {
              if (this._popup) {
                  if (this._popup._isOpen) {
                      this.closePopup();
                  } else {
                      this.openPopup();
                  }
              }
              return this;
          },
  
          bindPopup: function (content, options) {
              var anchor = L.point(this.options.icon.options.popupAnchor || [0, 0]);
  
              anchor = anchor.add(L.Popup.prototype.options.offset);
  
              if (options && options.offset) {
                  anchor = anchor.add(options.offset);
              }
  
              options = L.extend({ offset: anchor }, options);
  
              if (!this._popupHandlersAdded) {
                  this
                      .on('click', this.togglePopup, this)
                      .on('remove', this.closePopup, this)
                      .on('move', this._movePopup, this);
                  this._popupHandlersAdded = true;
              }
  
              if (content instanceof L.Popup) {
                  L.setOptions(content, options);
                  this._popup = content;
              } else {
                  this._popup = new L.Popup(options, this)
                      .setContent(content);
              }
  
              return this;
          },
  
          setPopupContent: function (content) {
              if (this._popup) {
                  this._popup.setContent(content);
              }
              return this;
          },
  
          unbindPopup: function () {
              if (this._popup) {
                  this._popup = null;
                  this
                      .off('click', this.togglePopup, this)
                      .off('remove', this.closePopup, this)
                      .off('move', this._movePopup, this);
                  this._popupHandlersAdded = false;
              }
              return this;
          },
  
          getPopup: function () {
              return this._popup;
          },
  
          _movePopup: function (e) {
              this._popup.setLatLng(e.latlng);
          }
      });
  
  
      /*
       * L.LayerGroup is a class to combine several layers into one so that
       * you can manipulate the group (e.g. add/remove it) as one layer.
       */
  
      L.LayerGroup = L.Class.extend({
          initialize: function (layers) {
              this._layers = {};
  
              var i, len;
  
              if (layers) {
                  for (i = 0, len = layers.length; i < len; i++) {
                      this.addLayer(layers[i]);
                  }
              }
          },
  
          addLayer: function (layer) {
              var id = this.getLayerId(layer);
  
              this._layers[id] = layer;
  
              if (this._map) {
                  this._map.addLayer(layer);
              }
  
              return this;
          },
  
          removeLayer: function (layer) {
              var id = layer in this._layers ? layer : this.getLayerId(layer);
  
              if (this._map && this._layers[id]) {
                  this._map.removeLayer(this._layers[id]);
              }
  
              delete this._layers[id];
  
              return this;
          },
  
          hasLayer: function (layer) {
              if (!layer) { return false; }
  
              return (layer in this._layers || this.getLayerId(layer) in this._layers);
          },
  
          clearLayers: function () {
              this.eachLayer(this.removeLayer, this);
              return this;
          },
  
          invoke: function (methodName) {
              var args = Array.prototype.slice.call(arguments, 1),
                  i, layer;
  
              for (i in this._layers) {
                  layer = this._layers[i];
  
                  if (layer[methodName]) {
                      layer[methodName].apply(layer, args);
                  }
              }
  
              return this;
          },
  
          onAdd: function (map) {
              this._map = map;
              this.eachLayer(map.addLayer, map);
          },
  
          onRemove: function (map) {
              this.eachLayer(map.removeLayer, map);
              this._map = null;
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          eachLayer: function (method, context) {
              for (var i in this._layers) {
                  method.call(context, this._layers[i]);
              }
              return this;
          },
  
          getLayer: function (id) {
              return this._layers[id];
          },
  
          getLayers: function () {
              var layers = [];
  
              for (var i in this._layers) {
                  layers.push(this._layers[i]);
              }
              return layers;
          },
  
          setZIndex: function (zIndex) {
              return this.invoke('setZIndex', zIndex);
          },
  
          getLayerId: function (layer) {
              return L.stamp(layer);
          }
      });
  
      L.layerGroup = function (layers) {
          return new L.LayerGroup(layers);
      };
  
  
      /*
       * L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
       * shared between a group of interactive layers (like vectors or markers).
       */
  
      L.FeatureGroup = L.LayerGroup.extend({
          includes: L.Mixin.Events,
  
          statics: {
              EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu popupopen popupclose'
          },
  
          addLayer: function (layer) {
              if (this.hasLayer(layer)) {
                  return this;
              }
  
              if ('on' in layer) {
                  layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
              }
  
              L.LayerGroup.prototype.addLayer.call(this, layer);
  
              if (this._popupContent && layer.bindPopup) {
                  layer.bindPopup(this._popupContent, this._popupOptions);
              }
  
              return this.fire('layeradd', { layer: layer });
          },
  
          removeLayer: function (layer) {
              if (!this.hasLayer(layer)) {
                  return this;
              }
              if (layer in this._layers) {
                  layer = this._layers[layer];
              }
  
              layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
  
              L.LayerGroup.prototype.removeLayer.call(this, layer);
  
              if (this._popupContent) {
                  this.invoke('unbindPopup');
              }
  
              return this.fire('layerremove', { layer: layer });
          },
  
          bindPopup: function (content, options) {
              this._popupContent = content;
              this._popupOptions = options;
              return this.invoke('bindPopup', content, options);
          },
  
          openPopup: function (latlng) {
              // open popup on the first layer
              for (var id in this._layers) {
                  this._layers[id].openPopup(latlng);
                  break;
              }
              return this;
          },
  
          setStyle: function (style) {
              return this.invoke('setStyle', style);
          },
  
          bringToFront: function () {
              return this.invoke('bringToFront');
          },
  
          bringToBack: function () {
              return this.invoke('bringToBack');
          },
  
          getBounds: function () {
              var bounds = new L.LatLngBounds();
  
              this.eachLayer(function (layer) {
                  bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
              });
  
              return bounds;
          },
  
          _propagateEvent: function (e) {
              e = L.extend({
                  layer: e.target,
                  target: this
              }, e);
              this.fire(e.type, e);
          }
      });
  
      L.featureGroup = function (layers) {
          return new L.FeatureGroup(layers);
      };
  
  
      /*
       * L.Path is a base class for rendering vector paths on a map. Inherited by Polyline, Circle, etc.
       */
  
      L.Path = L.Class.extend({
          includes: [L.Mixin.Events],
  
          statics: {
              // how much to extend the clip area around the map view
              // (relative to its size, e.g. 0.5 is half the screen in each direction)
              // set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is)
              CLIP_PADDING: (function () {
                  var max = L.Browser.mobile ? 1280 : 2000,
                      target = (max / Math.max(window.outerWidth, window.outerHeight) - 1) / 2;
                  return Math.max(0, Math.min(0.5, target));
              })()
          },
  
          options: {
              stroke: true,
              color: '#0033ff',
              dashArray: null,
              lineCap: null,
              lineJoin: null,
              weight: 5,
              opacity: 0.5,
  
              fill: false,
              fillColor: null, //same as color by default
              fillOpacity: 0.2,
  
              clickable: true
          },
  
          initialize: function (options) {
              L.setOptions(this, options);
          },
  
          onAdd: function (map) {
              this._map = map;
  
              if (!this._container) {
                  this._initElements();
                  this._initEvents();
              }
  
              this.projectLatlngs();
              this._updatePath();
  
              if (this._container) {
                  this._map._pathRoot.appendChild(this._container);
              }
  
              this.fire('add');
  
              map.on({
                  'viewreset': this.projectLatlngs,
                  'moveend': this._updatePath
              }, this);
          },
  
          addTo: function (map) {
              map.addLayer(this);
              return this;
          },
  
          onRemove: function (map) {
              map._pathRoot.removeChild(this._container);
  
              // Need to fire remove event before we set _map to null as the event hooks might need the object
              this.fire('remove');
              this._map = null;
  
              if (L.Browser.vml) {
                  this._container = null;
                  this._stroke = null;
                  this._fill = null;
              }
  
              map.off({
                  'viewreset': this.projectLatlngs,
                  'moveend': this._updatePath
              }, this);
          },
  
          projectLatlngs: function () {
              // do all projection stuff here
          },
  
          setStyle: function (style) {
              L.setOptions(this, style);
  
              if (this._container) {
                  this._updateStyle();
              }
  
              return this;
          },
  
          redraw: function () {
              if (this._map) {
                  this.projectLatlngs();
                  this._updatePath();
              }
              return this;
          }
      });
  
      L.Map.include({
          _updatePathViewport: function () {
              var p = L.Path.CLIP_PADDING,
                  size = this.getSize(),
                  panePos = L.DomUtil.getPosition(this._mapPane),
                  min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()),
                  max = min.add(size.multiplyBy(1 + p * 2)._round());
  
              this._pathViewport = new L.Bounds(min, max);
          }
      });
  
  
      /*
       * Extends L.Path with SVG-specific rendering code.
       */
  
      L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
  
      L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
  
      L.Path = L.Path.extend({
          statics: {
              SVG: L.Browser.svg
          },
  
          bringToFront: function () {
              var root = this._map._pathRoot,
                  path = this._container;
  
              if (path && root.lastChild !== path) {
                  root.appendChild(path);
              }
              return this;
          },
  
          bringToBack: function () {
              var root = this._map._pathRoot,
                  path = this._container,
                  first = root.firstChild;
  
              if (path && first !== path) {
                  root.insertBefore(path, first);
              }
              return this;
          },
  
          getPathString: function () {
              // form path string here
          },
  
          _createElement: function (name) {
              return document.createElementNS(L.Path.SVG_NS, name);
          },
  
          _initElements: function () {
              this._map._initPathRoot();
              this._initPath();
              this._initStyle();
          },
  
          _initPath: function () {
              this._container = this._createElement('g');
  
              this._path = this._createElement('path');
  
              if (this.options.className) {
                  L.DomUtil.addClass(this._path, this.options.className);
              }
  
              this._container.appendChild(this._path);
          },
  
          _initStyle: function () {
              if (this.options.stroke) {
                  this._path.setAttribute('stroke-linejoin', 'round');
                  this._path.setAttribute('stroke-linecap', 'round');
              }
              if (this.options.fill) {
                  this._path.setAttribute('fill-rule', 'evenodd');
              }
              if (this.options.pointerEvents) {
                  this._path.setAttribute('pointer-events', this.options.pointerEvents);
              }
              if (!this.options.clickable && !this.options.pointerEvents) {
                  this._path.setAttribute('pointer-events', 'none');
              }
              this._updateStyle();
          },
  
          _updateStyle: function () {
              if (this.options.stroke) {
                  this._path.setAttribute('stroke', this.options.color);
                  this._path.setAttribute('stroke-opacity', this.options.opacity);
                  this._path.setAttribute('stroke-width', this.options.weight);
                  if (this.options.dashArray) {
                      this._path.setAttribute('stroke-dasharray', this.options.dashArray);
                  } else {
                      this._path.removeAttribute('stroke-dasharray');
                  }
                  if (this.options.lineCap) {
                      this._path.setAttribute('stroke-linecap', this.options.lineCap);
                  }
                  if (this.options.lineJoin) {
                      this._path.setAttribute('stroke-linejoin', this.options.lineJoin);
                  }
              } else {
                  this._path.setAttribute('stroke', 'none');
              }
              if (this.options.fill) {
                  this._path.setAttribute('fill', this.options.fillColor || this.options.color);
                  this._path.setAttribute('fill-opacity', this.options.fillOpacity);
              } else {
                  this._path.setAttribute('fill', 'none');
              }
          },
  
          _updatePath: function () {
              var str = this.getPathString();
              if (!str) {
                  // fix webkit empty string parsing bug
                  str = 'M0 0';
              }
              this._path.setAttribute('d', str);
          },
  
          // TODO remove duplication with L.Map
          _initEvents: function () {
              if (this.options.clickable) {
                  if (L.Browser.svg || !L.Browser.vml) {
                      L.DomUtil.addClass(this._path, 'leaflet-clickable');
                  }
  
                  L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
  
                  var events = ['dblclick', 'mousedown', 'mouseover',
                      'mouseout', 'mousemove', 'contextmenu'];
                  for (var i = 0; i < events.length; i++) {
                      L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this);
                  }
              }
          },
  
          _onMouseClick: function (e) {
              if (this._map.dragging && this._map.dragging.moved()) { return; }
  
              this._fireMouseEvent(e);
          },
  
          _fireMouseEvent: function (e) {
              if (!this.hasEventListeners(e.type)) { return; }
  
              var map = this._map,
                  containerPoint = map.mouseEventToContainerPoint(e),
                  layerPoint = map.containerPointToLayerPoint(containerPoint),
                  latlng = map.layerPointToLatLng(layerPoint);
  
              this.fire(e.type, {
                  latlng: latlng,
                  layerPoint: layerPoint,
                  containerPoint: containerPoint,
                  originalEvent: e
              });
  
              if (e.type === 'contextmenu') {
                  L.DomEvent.preventDefault(e);
              }
              if (e.type !== 'mousemove') {
                  L.DomEvent.stopPropagation(e);
              }
          }
      });
  
      L.Map.include({
          _initPathRoot: function () {
              if (!this._pathRoot) {
                  this._pathRoot = L.Path.prototype._createElement('svg');
                  this._panes.overlayPane.appendChild(this._pathRoot);
  
                  if (this.options.zoomAnimation && L.Browser.any3d) {
                      L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-animated');
  
                      this.on({
                          'zoomanim': this._animatePathZoom,
                          'zoomend': this._endPathZoom
                      });
                  } else {
                      L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-hide');
                  }
  
                  this.on('moveend', this._updateSvgViewport);
                  this._updateSvgViewport();
              }
          },
  
          _animatePathZoom: function (e) {
              var scale = this.getZoomScale(e.zoom),
                  offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min);
  
              this._pathRoot.style[L.DomUtil.TRANSFORM] =
                  L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') ';
  
              this._pathZooming = true;
          },
  
          _endPathZoom: function () {
              this._pathZooming = false;
          },
  
          _updateSvgViewport: function () {
  
              if (this._pathZooming) {
                  // Do not update SVGs while a zoom animation is going on otherwise the animation will break.
                  // When the zoom animation ends we will be updated again anyway
                  // This fixes the case where you do a momentum move and zoom while the move is still ongoing.
                  return;
              }
  
              this._updatePathViewport();
  
              var vp = this._pathViewport,
                  min = vp.min,
                  max = vp.max,
                  width = max.x - min.x,
                  height = max.y - min.y,
                  root = this._pathRoot,
                  pane = this._panes.overlayPane;
  
              // Hack to make flicker on drag end on mobile webkit less irritating
              if (L.Browser.mobileWebkit) {
                  pane.removeChild(root);
              }
  
              L.DomUtil.setPosition(root, min);
              root.setAttribute('width', width);
              root.setAttribute('height', height);
              root.setAttribute('viewBox', [min.x, min.y, width, height].join(' '));
  
              if (L.Browser.mobileWebkit) {
                  pane.appendChild(root);
              }
          }
      });
  
  
      /*
       * Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods.
       */
  
      L.Path.include({
  
          bindPopup: function (content, options) {
  
              if (content instanceof L.Popup) {
                  this._popup = content;
              } else {
                  if (!this._popup || options) {
                      this._popup = new L.Popup(options, this);
                  }
                  this._popup.setContent(content);
              }
  
              if (!this._popupHandlersAdded) {
                  this
                      .on('click', this._openPopup, this)
                      .on('remove', this.closePopup, this);
  
                  this._popupHandlersAdded = true;
              }
  
              return this;
          },
  
          unbindPopup: function () {
              if (this._popup) {
                  this._popup = null;
                  this
                      .off('click', this._openPopup)
                      .off('remove', this.closePopup);
  
                  this._popupHandlersAdded = false;
              }
              return this;
          },
  
          openPopup: function (latlng) {
  
              if (this._popup) {
                  // open the popup from one of the path's points if not specified
                  latlng = latlng || this._latlng ||
                      this._latlngs[Math.floor(this._latlngs.length / 2)];
  
                  this._openPopup({ latlng: latlng });
              }
  
              return this;
          },
  
          closePopup: function () {
              if (this._popup) {
                  this._popup._close();
              }
              return this;
          },
  
          _openPopup: function (e) {
              this._popup.setLatLng(e.latlng);
              this._map.openPopup(this._popup);
          }
      });
  
  
      /*
       * Vector rendering for IE6-8 through VML.
       * Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
       */
  
      L.Browser.vml = !L.Browser.svg && (function () {
          try {
              var div = document.createElement('div');
              div.innerHTML = '<v:shape adj="1"/>';
  
              var shape = div.firstChild;
              shape.style.behavior = 'url(#default#VML)';
  
              return shape && (typeof shape.adj === 'object');
  
          } catch (e) {
              return false;
          }
      }());
  
      L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({
          statics: {
              VML: true,
              CLIP_PADDING: 0.02
          },
  
          _createElement: (function () {
              try {
                  document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
                  return function (name) {
                      return document.createElement('<lvml:' + name + ' class="lvml">');
                  };
              } catch (e) {
                  return function (name) {
                      return document.createElement(
                          '<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
                  };
              }
          }()),
  
          _initPath: function () {
              var container = this._container = this._createElement('shape');
  
              L.DomUtil.addClass(container, 'leaflet-vml-shape' +
                  (this.options.className ? ' ' + this.options.className : ''));
  
              if (this.options.clickable) {
                  L.DomUtil.addClass(container, 'leaflet-clickable');
              }
  
              container.coordsize = '1 1';
  
              this._path = this._createElement('path');
              container.appendChild(this._path);
  
              this._map._pathRoot.appendChild(container);
          },
  
          _initStyle: function () {
              this._updateStyle();
          },
  
          _updateStyle: function () {
              var stroke = this._stroke,
                  fill = this._fill,
                  options = this.options,
                  container = this._container;
  
              container.stroked = options.stroke;
              container.filled = options.fill;
  
              if (options.stroke) {
                  if (!stroke) {
                      stroke = this._stroke = this._createElement('stroke');
                      stroke.endcap = 'round';
                      container.appendChild(stroke);
                  }
                  stroke.weight = options.weight + 'px';
                  stroke.color = options.color;
                  stroke.opacity = options.opacity;
  
                  if (options.dashArray) {
                      stroke.dashStyle = L.Util.isArray(options.dashArray) ?
                          options.dashArray.join(' ') :
                          options.dashArray.replace(/( *, *)/g, ' ');
                  } else {
                      stroke.dashStyle = '';
                  }
                  if (options.lineCap) {
                      stroke.endcap = options.lineCap.replace('butt', 'flat');
                  }
                  if (options.lineJoin) {
                      stroke.joinstyle = options.lineJoin;
                  }
  
              } else if (stroke) {
                  container.removeChild(stroke);
                  this._stroke = null;
              }
  
              if (options.fill) {
                  if (!fill) {
                      fill = this._fill = this._createElement('fill');
                      container.appendChild(fill);
                  }
                  fill.color = options.fillColor || options.color;
                  fill.opacity = options.fillOpacity;
  
              } else if (fill) {
                  container.removeChild(fill);
                  this._fill = null;
              }
          },
  
          _updatePath: function () {
              var style = this._container.style;
  
              style.display = 'none';
              this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
              style.display = '';
          }
      });
  
      L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
          _initPathRoot: function () {
              if (this._pathRoot) { return; }
  
              var root = this._pathRoot = document.createElement('div');
              root.className = 'leaflet-vml-container';
              this._panes.overlayPane.appendChild(root);
  
              this.on('moveend', this._updatePathViewport);
              this._updatePathViewport();
          }
      });
  
  
      /*
       * Vector rendering for all browsers that support canvas.
       */
  
      L.Browser.canvas = (function () {
          return !!document.createElement('canvas').getContext;
      }());
  
      L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({
          statics: {
              //CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value
              CANVAS: true,
              SVG: false
          },
  
          redraw: function () {
              if (this._map) {
                  this.projectLatlngs();
                  this._requestUpdate();
              }
              return this;
          },
  
          setStyle: function (style) {
              L.setOptions(this, style);
  
              if (this._map) {
                  this._updateStyle();
                  this._requestUpdate();
              }
              return this;
          },
  
          onRemove: function (map) {
              map
                  .off('viewreset', this.projectLatlngs, this)
                  .off('moveend', this._updatePath, this);
  
              if (this.options.clickable) {
                  this._map.off('click', this._onClick, this);
                  this._map.off('mousemove', this._onMouseMove, this);
              }
  
              this._requestUpdate();
  
              this.fire('remove');
              this._map = null;
          },
  
          _requestUpdate: function () {
              if (this._map && !L.Path._updateRequest) {
                  L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
              }
          },
  
          _fireMapMoveEnd: function () {
              L.Path._updateRequest = null;
              this.fire('moveend');
          },
  
          _initElements: function () {
              this._map._initPathRoot();
              this._ctx = this._map._canvasCtx;
          },
  
          _updateStyle: function () {
              var options = this.options;
  
              if (options.stroke) {
                  this._ctx.lineWidth = options.weight;
                  this._ctx.strokeStyle = options.color;
              }
              if (options.fill) {
                  this._ctx.fillStyle = options.fillColor || options.color;
              }
          },
  
          _drawPath: function () {
              var i, j, len, len2, point, drawMethod;
  
              this._ctx.beginPath();
  
              for (i = 0, len = this._parts.length; i < len; i++) {
                  for (j = 0, len2 = this._parts[i].length; j < len2; j++) {
                      point = this._parts[i][j];
                      drawMethod = (j === 0 ? 'move' : 'line') + 'To';
  
                      this._ctx[drawMethod](point.x, point.y);
                  }
                  // TODO refactor ugly hack
                  if (this instanceof L.Polygon) {
                      this._ctx.closePath();
                  }
              }
          },
  
          _checkIfEmpty: function () {
              return !this._parts.length;
          },
  
          _updatePath: function () {
              if (this._checkIfEmpty()) { return; }
  
              var ctx = this._ctx,
                  options = this.options;
  
              this._drawPath();
              ctx.save();
              this._updateStyle();
  
              if (options.fill) {
                  ctx.globalAlpha = options.fillOpacity;
                  ctx.fill();
              }
  
              if (options.stroke) {
                  ctx.globalAlpha = options.opacity;
                  ctx.stroke();
              }
  
              ctx.restore();
  
              // TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
          },
  
          _initEvents: function () {
              if (this.options.clickable) {
                  // TODO dblclick
                  this._map.on('mousemove', this._onMouseMove, this);
                  this._map.on('click', this._onClick, this);
              }
          },
  
          _onClick: function (e) {
              if (this._containsPoint(e.layerPoint)) {
                  this.fire('click', e);
              }
          },
  
          _onMouseMove: function (e) {
              if (!this._map || this._map._animatingZoom) { return; }
  
              // TODO don't do on each move
              if (this._containsPoint(e.layerPoint)) {
                  this._ctx.canvas.style.cursor = 'pointer';
                  this._mouseInside = true;
                  this.fire('mouseover', e);
  
              } else if (this._mouseInside) {
                  this._ctx.canvas.style.cursor = '';
                  this._mouseInside = false;
                  this.fire('mouseout', e);
              }
          }
      });
  
      L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : {
          _initPathRoot: function () {
              var root = this._pathRoot,
                  ctx;
  
              if (!root) {
                  root = this._pathRoot = document.createElement('canvas');
                  root.style.position = 'absolute';
                  ctx = this._canvasCtx = root.getContext('2d');
  
                  ctx.lineCap = 'round';
                  ctx.lineJoin = 'round';
  
                  this._panes.overlayPane.appendChild(root);
  
                  if (this.options.zoomAnimation) {
                      this._pathRoot.className = 'leaflet-zoom-animated';
                      this.on('zoomanim', this._animatePathZoom);
                      this.on('zoomend', this._endPathZoom);
                  }
                  this.on('moveend', this._updateCanvasViewport);
                  this._updateCanvasViewport();
              }
          },
  
          _updateCanvasViewport: function () {
              // don't redraw while zooming. See _updateSvgViewport for more details
              if (this._pathZooming) { return; }
              this._updatePathViewport();
  
              var vp = this._pathViewport,
                  min = vp.min,
                  size = vp.max.subtract(min),
                  root = this._pathRoot;
  
              //TODO check if this works properly on mobile webkit
              L.DomUtil.setPosition(root, min);
              root.width = size.x;
              root.height = size.y;
              root.getContext('2d').translate(-min.x, -min.y);
          }
      });
  
  
      /*
       * L.LineUtil contains different utility functions for line segments
       * and polylines (clipping, simplification, distances, etc.)
       */
  
      /*jshint bitwise:false */ // allow bitwise operations for this file
  
      L.LineUtil = {
  
          // Simplify polyline with vertex reduction and Douglas-Peucker simplification.
          // Improves rendering performance dramatically by lessening the number of points to draw.
  
          simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
              if (!tolerance || !points.length) {
                  return points.slice();
              }
  
              var sqTolerance = tolerance * tolerance;
  
              // stage 1: vertex reduction
              points = this._reducePoints(points, sqTolerance);
  
              // stage 2: Douglas-Peucker simplification
              points = this._simplifyDP(points, sqTolerance);
  
              return points;
          },
  
          // distance from a point to a segment between two points
          pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
              return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
          },
  
          closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
              return this._sqClosestPointOnSegment(p, p1, p2);
          },
  
          // Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
          _simplifyDP: function (points, sqTolerance) {
  
              var len = points.length,
                  ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
                  markers = new ArrayConstructor(len);
  
              markers[0] = markers[len - 1] = 1;
  
              this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
  
              var i,
                  newPoints = [];
  
              for (i = 0; i < len; i++) {
                  if (markers[i]) {
                      newPoints.push(points[i]);
                  }
              }
  
              return newPoints;
          },
  
          _simplifyDPStep: function (points, markers, sqTolerance, first, last) {
  
              var maxSqDist = 0,
                  index, i, sqDist;
  
              for (i = first + 1; i <= last - 1; i++) {
                  sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
  
                  if (sqDist > maxSqDist) {
                      index = i;
                      maxSqDist = sqDist;
                  }
              }
  
              if (maxSqDist > sqTolerance) {
                  markers[index] = 1;
  
                  this._simplifyDPStep(points, markers, sqTolerance, first, index);
                  this._simplifyDPStep(points, markers, sqTolerance, index, last);
              }
          },
  
          // reduce points that are too close to each other to a single point
          _reducePoints: function (points, sqTolerance) {
              var reducedPoints = [points[0]];
  
              for (var i = 1, prev = 0, len = points.length; i < len; i++) {
                  if (this._sqDist(points[i], points[prev]) > sqTolerance) {
                      reducedPoints.push(points[i]);
                      prev = i;
                  }
              }
              if (prev < len - 1) {
                  reducedPoints.push(points[len - 1]);
              }
              return reducedPoints;
          },
  
          // Cohen-Sutherland line clipping algorithm.
          // Used to avoid rendering parts of a polyline that are not currently visible.
  
          clipSegment: function (a, b, bounds, useLastCode) {
              var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
                  codeB = this._getBitCode(b, bounds),
  
                  codeOut, p, newCode;
  
              // save 2nd code to avoid calculating it on the next segment
              this._lastCode = codeB;
  
              while (true) {
                  // if a,b is inside the clip window (trivial accept)
                  if (!(codeA | codeB)) {
                      return [a, b];
                      // if a,b is outside the clip window (trivial reject)
                  } else if (codeA & codeB) {
                      return false;
                      // other cases
                  } else {
                      codeOut = codeA || codeB;
                      p = this._getEdgeIntersection(a, b, codeOut, bounds);
                      newCode = this._getBitCode(p, bounds);
  
                      if (codeOut === codeA) {
                          a = p;
                          codeA = newCode;
                      } else {
                          b = p;
                          codeB = newCode;
                      }
                  }
              }
          },
  
          _getEdgeIntersection: function (a, b, code, bounds) {
              var dx = b.x - a.x,
                  dy = b.y - a.y,
                  min = bounds.min,
                  max = bounds.max;
  
              if (code & 8) { // top
                  return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
              } else if (code & 4) { // bottom
                  return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
              } else if (code & 2) { // right
                  return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
              } else if (code & 1) { // left
                  return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
              }
          },
  
          _getBitCode: function (/*Point*/ p, bounds) {
              var code = 0;
  
              if (p.x < bounds.min.x) { // left
                  code |= 1;
              } else if (p.x > bounds.max.x) { // right
                  code |= 2;
              }
              if (p.y < bounds.min.y) { // bottom
                  code |= 4;
              } else if (p.y > bounds.max.y) { // top
                  code |= 8;
              }
  
              return code;
          },
  
          // square distance (to avoid unnecessary Math.sqrt calls)
          _sqDist: function (p1, p2) {
              var dx = p2.x - p1.x,
                  dy = p2.y - p1.y;
              return dx * dx + dy * dy;
          },
  
          // return closest point on segment or distance to that point
          _sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
              var x = p1.x,
                  y = p1.y,
                  dx = p2.x - x,
                  dy = p2.y - y,
                  dot = dx * dx + dy * dy,
                  t;
  
              if (dot > 0) {
                  t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
  
                  if (t > 1) {
                      x = p2.x;
                      y = p2.y;
                  } else if (t > 0) {
                      x += dx * t;
                      y += dy * t;
                  }
              }
  
              dx = p.x - x;
              dy = p.y - y;
  
              return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
          }
      };
  
  
      /*
       * L.Polyline is used to display polylines on a map.
       */
  
      L.Polyline = L.Path.extend({
          initialize: function (latlngs, options) {
              L.Path.prototype.initialize.call(this, options);
  
              this._latlngs = this._convertLatLngs(latlngs);
          },
  
          options: {
              // how much to simplify the polyline on each zoom level
              // more = better performance and smoother look, less = more accurate
              smoothFactor: 1.0,
              noClip: false
          },
  
          projectLatlngs: function () {
              this._originalPoints = [];
  
              for (var i = 0, len = this._latlngs.length; i < len; i++) {
                  this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
              }
          },
  
          getPathString: function () {
              for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
                  str += this._getPathPartStr(this._parts[i]);
              }
              return str;
          },
  
          getLatLngs: function () {
              return this._latlngs;
          },
  
          setLatLngs: function (latlngs) {
              this._latlngs = this._convertLatLngs(latlngs);
              return this.redraw();
          },
  
          addLatLng: function (latlng) {
              this._latlngs.push(L.latLng(latlng));
              return this.redraw();
          },
  
          spliceLatLngs: function () { // (Number index, Number howMany)
              var removed = [].splice.apply(this._latlngs, arguments);
              this._convertLatLngs(this._latlngs, true);
              this.redraw();
              return removed;
          },
  
          closestLayerPoint: function (p) {
              var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null;
  
              for (var j = 0, jLen = parts.length; j < jLen; j++) {
                  var points = parts[j];
                  for (var i = 1, len = points.length; i < len; i++) {
                      p1 = points[i - 1];
                      p2 = points[i];
                      var sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true);
                      if (sqDist < minDistance) {
                          minDistance = sqDist;
                          minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
                      }
                  }
              }
              if (minPoint) {
                  minPoint.distance = Math.sqrt(minDistance);
              }
              return minPoint;
          },
  
          getBounds: function () {
              return new L.LatLngBounds(this.getLatLngs());
          },
  
          _convertLatLngs: function (latlngs, overwrite) {
              var i, len, target = overwrite ? latlngs : [];
  
              for (i = 0, len = latlngs.length; i < len; i++) {
                  if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') {
                      return;
                  }
                  target[i] = L.latLng(latlngs[i]);
              }
              return target;
          },
  
          _initEvents: function () {
              L.Path.prototype._initEvents.call(this);
          },
  
          _getPathPartStr: function (points) {
              var round = L.Path.VML;
  
              for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
                  p = points[j];
                  if (round) {
                      p._round();
                  }
                  str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
              }
              return str;
          },
  
          _clipPoints: function () {
              var points = this._originalPoints,
                  len = points.length,
                  i, k, segment;
  
              if (this.options.noClip) {
                  this._parts = [points];
                  return;
              }
  
              this._parts = [];
  
              var parts = this._parts,
                  vp = this._map._pathViewport,
                  lu = L.LineUtil;
  
              for (i = 0, k = 0; i < len - 1; i++) {
                  segment = lu.clipSegment(points[i], points[i + 1], vp, i);
                  if (!segment) {
                      continue;
                  }
  
                  parts[k] = parts[k] || [];
                  parts[k].push(segment[0]);
  
                  // if segment goes out of screen, or it's the last one, it's the end of the line part
                  if ((segment[1] !== points[i + 1]) || (i === len - 2)) {
                      parts[k].push(segment[1]);
                      k++;
                  }
              }
          },
  
          // simplify each clipped part of the polyline
          _simplifyPoints: function () {
              var parts = this._parts,
                  lu = L.LineUtil;
  
              for (var i = 0, len = parts.length; i < len; i++) {
                  parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
              }
          },
  
          _updatePath: function () {
              if (!this._map) { return; }
  
              this._clipPoints();
              this._simplifyPoints();
  
              L.Path.prototype._updatePath.call(this);
          }
      });
  
      L.polyline = function (latlngs, options) {
          return new L.Polyline(latlngs, options);
      };
  
  
      /*
       * L.PolyUtil contains utility functions for polygons (clipping, etc.).
       */
  
      /*jshint bitwise:false */ // allow bitwise operations here
  
      L.PolyUtil = {};
  
      /*
       * Sutherland-Hodgeman polygon clipping algorithm.
       * Used to avoid rendering parts of a polygon that are not currently visible.
       */
      L.PolyUtil.clipPolygon = function (points, bounds) {
          var clippedPoints,
              edges = [1, 4, 2, 8],
              i, j, k,
              a, b,
              len, edge, p,
              lu = L.LineUtil;
  
          for (i = 0, len = points.length; i < len; i++) {
              points[i]._code = lu._getBitCode(points[i], bounds);
          }
  
          // for each edge (left, bottom, right, top)
          for (k = 0; k < 4; k++) {
              edge = edges[k];
              clippedPoints = [];
  
              for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
                  a = points[i];
                  b = points[j];
  
                  // if a is inside the clip window
                  if (!(a._code & edge)) {
                      // if b is outside the clip window (a->b goes out of screen)
                      if (b._code & edge) {
                          p = lu._getEdgeIntersection(b, a, edge, bounds);
                          p._code = lu._getBitCode(p, bounds);
                          clippedPoints.push(p);
                      }
                      clippedPoints.push(a);
  
                      // else if b is inside the clip window (a->b enters the screen)
                  } else if (!(b._code & edge)) {
                      p = lu._getEdgeIntersection(b, a, edge, bounds);
                      p._code = lu._getBitCode(p, bounds);
                      clippedPoints.push(p);
                  }
              }
              points = clippedPoints;
          }
  
          return points;
      };
  
  
      /*
       * L.Polygon is used to display polygons on a map.
       */
  
      L.Polygon = L.Polyline.extend({
          options: {
              fill: true
          },
  
          initialize: function (latlngs, options) {
              L.Polyline.prototype.initialize.call(this, latlngs, options);
              this._initWithHoles(latlngs);
          },
  
          _initWithHoles: function (latlngs) {
              var i, len, hole;
              if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
                  this._latlngs = this._convertLatLngs(latlngs[0]);
                  this._holes = latlngs.slice(1);
  
                  for (i = 0, len = this._holes.length; i < len; i++) {
                      hole = this._holes[i] = this._convertLatLngs(this._holes[i]);
                      if (hole[0].equals(hole[hole.length - 1])) {
                          hole.pop();
                      }
                  }
              }
  
              // filter out last point if its equal to the first one
              latlngs = this._latlngs;
  
              if (latlngs.length >= 2 && latlngs[0].equals(latlngs[latlngs.length - 1])) {
                  latlngs.pop();
              }
          },
  
          projectLatlngs: function () {
              L.Polyline.prototype.projectLatlngs.call(this);
  
              // project polygon holes points
              // TODO move this logic to Polyline to get rid of duplication
              this._holePoints = [];
  
              if (!this._holes) { return; }
  
              var i, j, len, len2;
  
              for (i = 0, len = this._holes.length; i < len; i++) {
                  this._holePoints[i] = [];
  
                  for (j = 0, len2 = this._holes[i].length; j < len2; j++) {
                      this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
                  }
              }
          },
  
          setLatLngs: function (latlngs) {
              if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
                  this._initWithHoles(latlngs);
                  return this.redraw();
              } else {
                  return L.Polyline.prototype.setLatLngs.call(this, latlngs);
              }
          },
  
          _clipPoints: function () {
              var points = this._originalPoints,
                  newParts = [];
  
              this._parts = [points].concat(this._holePoints);
  
              if (this.options.noClip) { return; }
  
              for (var i = 0, len = this._parts.length; i < len; i++) {
                  var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
                  if (clipped.length) {
                      newParts.push(clipped);
                  }
              }
  
              this._parts = newParts;
          },
  
          _getPathPartStr: function (points) {
              var str = L.Polyline.prototype._getPathPartStr.call(this, points);
              return str + (L.Browser.svg ? 'z' : 'x');
          }
      });
  
      L.polygon = function (latlngs, options) {
          return new L.Polygon(latlngs, options);
      };
  
  
      /*
       * Contains L.MultiPolyline and L.MultiPolygon layers.
       */
  
      (function () {
          function createMulti(Klass) {
  
              return L.FeatureGroup.extend({
  
                  initialize: function (latlngs, options) {
                      this._layers = {};
                      this._options = options;
                      this.setLatLngs(latlngs);
                  },
  
                  setLatLngs: function (latlngs) {
                      var i = 0,
                          len = latlngs.length;
  
                      this.eachLayer(function (layer) {
                          if (i < len) {
                              layer.setLatLngs(latlngs[i++]);
                          } else {
                              this.removeLayer(layer);
                          }
                      }, this);
  
                      while (i < len) {
                          this.addLayer(new Klass(latlngs[i++], this._options));
                      }
  
                      return this;
                  },
  
                  getLatLngs: function () {
                      var latlngs = [];
  
                      this.eachLayer(function (layer) {
                          latlngs.push(layer.getLatLngs());
                      });
  
                      return latlngs;
                  }
              });
          }
  
          L.MultiPolyline = createMulti(L.Polyline);
          L.MultiPolygon = createMulti(L.Polygon);
  
          L.multiPolyline = function (latlngs, options) {
              return new L.MultiPolyline(latlngs, options);
          };
  
          L.multiPolygon = function (latlngs, options) {
              return new L.MultiPolygon(latlngs, options);
          };
      }());
  
  
      /*
       * L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
       */
  
      L.Rectangle = L.Polygon.extend({
          initialize: function (latLngBounds, options) {
              L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
          },
  
          setBounds: function (latLngBounds) {
              this.setLatLngs(this._boundsToLatLngs(latLngBounds));
          },
  
          _boundsToLatLngs: function (latLngBounds) {
              latLngBounds = L.latLngBounds(latLngBounds);
              return [
                  latLngBounds.getSouthWest(),
                  latLngBounds.getNorthWest(),
                  latLngBounds.getNorthEast(),
                  latLngBounds.getSouthEast()
              ];
          }
      });
  
      L.rectangle = function (latLngBounds, options) {
          return new L.Rectangle(latLngBounds, options);
      };
  
  
      /*
       * L.Circle is a circle overlay (with a certain radius in meters).
       */
  
      L.Circle = L.Path.extend({
          initialize: function (latlng, radius, options) {
              L.Path.prototype.initialize.call(this, options);
  
              this._latlng = L.latLng(latlng);
              this._mRadius = radius;
          },
  
          options: {
              fill: true
          },
  
          setLatLng: function (latlng) {
              this._latlng = L.latLng(latlng);
              return this.redraw();
          },
  
          setRadius: function (radius) {
              this._mRadius = radius;
              return this.redraw();
          },
  
          projectLatlngs: function () {
              var lngRadius = this._getLngRadius(),
                  latlng = this._latlng,
                  pointLeft = this._map.latLngToLayerPoint([latlng.lat, latlng.lng - lngRadius]);
  
              this._point = this._map.latLngToLayerPoint(latlng);
              this._radius = Math.max(this._point.x - pointLeft.x, 1);
          },
  
          getBounds: function () {
              var lngRadius = this._getLngRadius(),
                  latRadius = (this._mRadius / 40075017) * 360,
                  latlng = this._latlng;
  
              return new L.LatLngBounds(
                  [latlng.lat - latRadius, latlng.lng - lngRadius],
                  [latlng.lat + latRadius, latlng.lng + lngRadius]);
          },
  
          getLatLng: function () {
              return this._latlng;
          },
  
          getPathString: function () {
              var p = this._point,
                  r = this._radius;
  
              if (this._checkIfEmpty()) {
                  return '';
              }
  
              if (L.Browser.svg) {
                  return 'M' + p.x + ',' + (p.y - r) +
                      'A' + r + ',' + r + ',0,1,1,' +
                      (p.x - 0.1) + ',' + (p.y - r) + ' z';
              } else {
                  p._round();
                  r = Math.round(r);
                  return 'AL ' + p.x + ',' + p.y + ' ' + r + ',' + r + ' 0,' + (65535 * 360);
              }
          },
  
          getRadius: function () {
              return this._mRadius;
          },
  
          // TODO Earth hardcoded, move into projection code!
  
          _getLatRadius: function () {
              return (this._mRadius / 40075017) * 360;
          },
  
          _getLngRadius: function () {
              return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
          },
  
          _checkIfEmpty: function () {
              if (!this._map) {
                  return false;
              }
              var vp = this._map._pathViewport,
                  r = this._radius,
                  p = this._point;
  
              return p.x - r > vp.max.x || p.y - r > vp.max.y ||
                  p.x + r < vp.min.x || p.y + r < vp.min.y;
          }
      });
  
      L.circle = function (latlng, radius, options) {
          return new L.Circle(latlng, radius, options);
      };
  
  
      /*
       * L.CircleMarker is a circle overlay with a permanent pixel radius.
       */
  
      L.CircleMarker = L.Circle.extend({
          options: {
              radius: 10,
              weight: 2
          },
  
          initialize: function (latlng, options) {
              L.Circle.prototype.initialize.call(this, latlng, null, options);
              this._radius = this.options.radius;
          },
  
          projectLatlngs: function () {
              this._point = this._map.latLngToLayerPoint(this._latlng);
          },
  
          _updateStyle: function () {
              L.Circle.prototype._updateStyle.call(this);
              this.setRadius(this.options.radius);
          },
  
          setLatLng: function (latlng) {
              L.Circle.prototype.setLatLng.call(this, latlng);
              if (this._popup && this._popup._isOpen) {
                  this._popup.setLatLng(latlng);
              }
              return this;
          },
  
          setRadius: function (radius) {
              this.options.radius = this._radius = radius;
              return this.redraw();
          },
  
          getRadius: function () {
              return this._radius;
          }
      });
  
      L.circleMarker = function (latlng, options) {
          return new L.CircleMarker(latlng, options);
      };
  
  
      /*
       * Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines.
       */
  
      L.Polyline.include(!L.Path.CANVAS ? {} : {
          _containsPoint: function (p, closed) {
              var i, j, k, len, len2, dist, part,
                  w = this.options.weight / 2;
  
              if (L.Browser.touch) {
                  w += 10; // polyline click tolerance on touch devices
              }
  
              for (i = 0, len = this._parts.length; i < len; i++) {
                  part = this._parts[i];
                  for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
                      if (!closed && (j === 0)) {
                          continue;
                      }
  
                      dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
  
                      if (dist <= w) {
                          return true;
                      }
                  }
              }
              return false;
          }
      });
  
  
      /*
       * Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons.
       */
  
      L.Polygon.include(!L.Path.CANVAS ? {} : {
          _containsPoint: function (p) {
              var inside = false,
                  part, p1, p2,
                  i, j, k,
                  len, len2;
  
              // TODO optimization: check if within bounds first
  
              if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
                  // click on polygon border
                  return true;
              }
  
              // ray casting algorithm for detecting if point is in polygon
  
              for (i = 0, len = this._parts.length; i < len; i++) {
                  part = this._parts[i];
  
                  for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
                      p1 = part[j];
                      p2 = part[k];
  
                      if (((p1.y > p.y) !== (p2.y > p.y)) &&
                          (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
                          inside = !inside;
                      }
                  }
              }
  
              return inside;
          }
      });
  
  
      /*
       * Extends L.Circle with Canvas-specific code.
       */
  
      L.Circle.include(!L.Path.CANVAS ? {} : {
          _drawPath: function () {
              var p = this._point;
              this._ctx.beginPath();
              this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false);
          },
  
          _containsPoint: function (p) {
              var center = this._point,
                  w2 = this.options.stroke ? this.options.weight / 2 : 0;
  
              return (p.distanceTo(center) <= this._radius + w2);
          }
      });
  
  
      /*
       * CircleMarker canvas specific drawing parts.
       */
  
      L.CircleMarker.include(!L.Path.CANVAS ? {} : {
          _updateStyle: function () {
              L.Path.prototype._updateStyle.call(this);
          }
      });
  
  
      /*
       * L.GeoJSON turns any GeoJSON data into a Leaflet layer.
       */
  
      L.GeoJSON = L.FeatureGroup.extend({
  
          initialize: function (geojson, options) {
              L.setOptions(this, options);
  
              this._layers = {};
  
              if (geojson) {
                  this.addData(geojson);
              }
          },
  
          addData: function (geojson) {
              var features = L.Util.isArray(geojson) ? geojson : geojson.features,
                  i, len, feature;
  
              if (features) {
                  for (i = 0, len = features.length; i < len; i++) {
                      // Only add this if geometry or geometries are set and not null
                      feature = features[i];
                      if (feature.geometries || feature.geometry || feature.features || feature.coordinates) {
                          this.addData(features[i]);
                      }
                  }
                  return this;
              }
  
              var options = this.options;
  
              if (options.filter && !options.filter(geojson)) { return; }
  
              var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer, options.coordsToLatLng, options);
              layer.feature = L.GeoJSON.asFeature(geojson);
  
              layer.defaultOptions = layer.options;
              this.resetStyle(layer);
  
              if (options.onEachFeature) {
                  options.onEachFeature(geojson, layer);
              }
  
              return this.addLayer(layer);
          },
  
          resetStyle: function (layer) {
              var style = this.options.style;
              if (style) {
                  // reset any custom styles
                  L.Util.extend(layer.options, layer.defaultOptions);
  
                  this._setLayerStyle(layer, style);
              }
          },
  
          setStyle: function (style) {
              this.eachLayer(function (layer) {
                  this._setLayerStyle(layer, style);
              }, this);
          },
  
          _setLayerStyle: function (layer, style) {
              if (typeof style === 'function') {
                  style = style(layer.feature);
              }
              if (layer.setStyle) {
                  layer.setStyle(style);
              }
          }
      });
  
      L.extend(L.GeoJSON, {
          geometryToLayer: function (geojson, pointToLayer, coordsToLatLng, vectorOptions) {
              var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
                  coords = geometry.coordinates,
                  layers = [],
                  latlng, latlngs, i, len;
  
              coordsToLatLng = coordsToLatLng || this.coordsToLatLng;
  
              switch (geometry.type) {
                  case 'Point':
                      latlng = coordsToLatLng(coords);
                      return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
  
                  case 'MultiPoint':
                      for (i = 0, len = coords.length; i < len; i++) {
                          latlng = coordsToLatLng(coords[i]);
                          layers.push(pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng));
                      }
                      return new L.FeatureGroup(layers);
  
                  case 'LineString':
                      latlngs = this.coordsToLatLngs(coords, 0, coordsToLatLng);
                      return new L.Polyline(latlngs, vectorOptions);
  
                  case 'Polygon':
                      if (coords.length === 2 && !coords[1].length) {
                          throw new Error('Invalid GeoJSON object.');
                      }
                      latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
                      return new L.Polygon(latlngs, vectorOptions);
  
                  case 'MultiLineString':
                      latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
                      return new L.MultiPolyline(latlngs, vectorOptions);
  
                  case 'MultiPolygon':
                      latlngs = this.coordsToLatLngs(coords, 2, coordsToLatLng);
                      return new L.MultiPolygon(latlngs, vectorOptions);
  
                  case 'GeometryCollection':
                      for (i = 0, len = geometry.geometries.length; i < len; i++) {
  
                          layers.push(this.geometryToLayer({
                              geometry: geometry.geometries[i],
                              type: 'Feature',
                              properties: geojson.properties
                          }, pointToLayer, coordsToLatLng, vectorOptions));
                      }
                      return new L.FeatureGroup(layers);
  
                  default:
                      throw new Error('Invalid GeoJSON object.');
              }
          },
  
          coordsToLatLng: function (coords) { // (Array[, Boolean]) -> LatLng
              return new L.LatLng(coords[1], coords[0], coords[2]);
          },
  
          coordsToLatLngs: function (coords, levelsDeep, coordsToLatLng) { // (Array[, Number, Function]) -> Array
              var latlng, i, len,
                  latlngs = [];
  
              for (i = 0, len = coords.length; i < len; i++) {
                  latlng = levelsDeep ?
                      this.coordsToLatLngs(coords[i], levelsDeep - 1, coordsToLatLng) :
                      (coordsToLatLng || this.coordsToLatLng)(coords[i]);
  
                  latlngs.push(latlng);
              }
  
              return latlngs;
          },
  
          latLngToCoords: function (latlng) {
              var coords = [latlng.lng, latlng.lat];
  
              if (latlng.alt !== undefined) {
                  coords.push(latlng.alt);
              }
              return coords;
          },
  
          latLngsToCoords: function (latLngs) {
              var coords = [];
  
              for (var i = 0, len = latLngs.length; i < len; i++) {
                  coords.push(L.GeoJSON.latLngToCoords(latLngs[i]));
              }
  
              return coords;
          },
  
          getFeature: function (layer, newGeometry) {
              return layer.feature ? L.extend({}, layer.feature, { geometry: newGeometry }) : L.GeoJSON.asFeature(newGeometry);
          },
  
          asFeature: function (geoJSON) {
              if (geoJSON.type === 'Feature') {
                  return geoJSON;
              }
  
              return {
                  type: 'Feature',
                  properties: {},
                  geometry: geoJSON
              };
          }
      });
  
      var PointToGeoJSON = {
          toGeoJSON: function () {
              return L.GeoJSON.getFeature(this, {
                  type: 'Point',
                  coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
              });
          }
      };
  
      L.Marker.include(PointToGeoJSON);
      L.Circle.include(PointToGeoJSON);
      L.CircleMarker.include(PointToGeoJSON);
  
      L.Polyline.include({
          toGeoJSON: function () {
              return L.GeoJSON.getFeature(this, {
                  type: 'LineString',
                  coordinates: L.GeoJSON.latLngsToCoords(this.getLatLngs())
              });
          }
      });
  
      L.Polygon.include({
          toGeoJSON: function () {
              var coords = [L.GeoJSON.latLngsToCoords(this.getLatLngs())],
                  i, len, hole;
  
              coords[0].push(coords[0][0]);
  
              if (this._holes) {
                  for (i = 0, len = this._holes.length; i < len; i++) {
                      hole = L.GeoJSON.latLngsToCoords(this._holes[i]);
                      hole.push(hole[0]);
                      coords.push(hole);
                  }
              }
  
              return L.GeoJSON.getFeature(this, {
                  type: 'Polygon',
                  coordinates: coords
              });
          }
      });
  
      (function () {
          function multiToGeoJSON(type) {
              return function () {
                  var coords = [];
  
                  this.eachLayer(function (layer) {
                      coords.push(layer.toGeoJSON().geometry.coordinates);
                  });
  
                  return L.GeoJSON.getFeature(this, {
                      type: type,
                      coordinates: coords
                  });
              };
          }
  
          L.MultiPolyline.include({ toGeoJSON: multiToGeoJSON('MultiLineString') });
          L.MultiPolygon.include({ toGeoJSON: multiToGeoJSON('MultiPolygon') });
  
          L.LayerGroup.include({
              toGeoJSON: function () {
  
                  var geometry = this.feature && this.feature.geometry,
                      jsons = [],
                      json;
  
                  if (geometry && geometry.type === 'MultiPoint') {
                      return multiToGeoJSON('MultiPoint').call(this);
                  }
  
                  var isGeometryCollection = geometry && geometry.type === 'GeometryCollection';
  
                  this.eachLayer(function (layer) {
                      if (layer.toGeoJSON) {
                          json = layer.toGeoJSON();
                          jsons.push(isGeometryCollection ? json.geometry : L.GeoJSON.asFeature(json));
                      }
                  });
  
                  if (isGeometryCollection) {
                      return L.GeoJSON.getFeature(this, {
                          geometries: jsons,
                          type: 'GeometryCollection'
                      });
                  }
  
                  return {
                      type: 'FeatureCollection',
                      features: jsons
                  };
              }
          });
      }());
  
      L.geoJson = function (geojson, options) {
          return new L.GeoJSON(geojson, options);
      };
  
  
      /*
       * L.DomEvent contains functions for working with DOM events.
       */
  
      L.DomEvent = {
          /* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
          addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
  
              var id = L.stamp(fn),
                  key = '_leaflet_' + type + id,
                  handler, originalHandler, newType;
  
              if (obj[key]) { return this; }
  
              handler = function (e) {
                  return fn.call(context || obj, e || L.DomEvent._getEvent());
              };
  
              if (L.Browser.pointer && type.indexOf('touch') === 0) {
                  return this.addPointerListener(obj, type, handler, id);
              }
              if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
                  this.addDoubleTapListener(obj, handler, id);
              }
  
              if ('addEventListener' in obj) {
  
                  if (type === 'mousewheel') {
                      obj.addEventListener('DOMMouseScroll', handler, false);
                      obj.addEventListener(type, handler, false);
  
                  } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
  
                      originalHandler = handler;
                      newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
  
                      handler = function (e) {
                          if (!L.DomEvent._checkMouse(obj, e)) { return; }
                          return originalHandler(e);
                      };
  
                      obj.addEventListener(newType, handler, false);
  
                  } else if (type === 'click' && L.Browser.android) {
                      originalHandler = handler;
                      handler = function (e) {
                          return L.DomEvent._filterClick(e, originalHandler);
                      };
  
                      obj.addEventListener(type, handler, false);
                  } else {
                      obj.addEventListener(type, handler, false);
                  }
  
              } else if ('attachEvent' in obj) {
                  obj.attachEvent('on' + type, handler);
              }
  
              obj[key] = handler;
  
              return this;
          },
  
          removeListener: function (obj, type, fn) {  // (HTMLElement, String, Function)
  
              var id = L.stamp(fn),
                  key = '_leaflet_' + type + id,
                  handler = obj[key];
  
              if (!handler) { return this; }
  
              if (L.Browser.pointer && type.indexOf('touch') === 0) {
                  this.removePointerListener(obj, type, id);
              } else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
                  this.removeDoubleTapListener(obj, id);
  
              } else if ('removeEventListener' in obj) {
  
                  if (type === 'mousewheel') {
                      obj.removeEventListener('DOMMouseScroll', handler, false);
                      obj.removeEventListener(type, handler, false);
  
                  } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
                      obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
                  } else {
                      obj.removeEventListener(type, handler, false);
                  }
              } else if ('detachEvent' in obj) {
                  obj.detachEvent('on' + type, handler);
              }
  
              obj[key] = null;
  
              return this;
          },
  
          stopPropagation: function (e) {
  
              if (e.stopPropagation) {
                  e.stopPropagation();
              } else {
                  e.cancelBubble = true;
              }
              L.DomEvent._skipped(e);
  
              return this;
          },
  
          disableScrollPropagation: function (el) {
              var stop = L.DomEvent.stopPropagation;
  
              return L.DomEvent
                  .on(el, 'mousewheel', stop)
                  .on(el, 'MozMousePixelScroll', stop);
          },
  
          disableClickPropagation: function (el) {
              var stop = L.DomEvent.stopPropagation;
  
              for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
                  L.DomEvent.on(el, L.Draggable.START[i], stop);
              }
  
              return L.DomEvent
                  .on(el, 'click', L.DomEvent._fakeStop)
                  .on(el, 'dblclick', stop);
          },
  
          preventDefault: function (e) {
  
              if (e.preventDefault) {
                  e.preventDefault();
              } else {
                  e.returnValue = false;
              }
              return this;
          },
  
          stop: function (e) {
              return L.DomEvent
                  .preventDefault(e)
                  .stopPropagation(e);
          },
  
          getMousePosition: function (e, container) {
              if (!container) {
                  return new L.Point(e.clientX, e.clientY);
              }
  
              var rect = container.getBoundingClientRect();
  
              return new L.Point(
                  e.clientX - rect.left - container.clientLeft,
                  e.clientY - rect.top - container.clientTop);
          },
  
          getWheelDelta: function (e) {
  
              var delta = 0;
  
              if (e.wheelDelta) {
                  delta = e.wheelDelta / 120;
              }
              if (e.detail) {
                  delta = -e.detail / 3;
              }
              return delta;
          },
  
          _skipEvents: {},
  
          _fakeStop: function (e) {
              // fakes stopPropagation by setting a special event flag, checked/reset with L.DomEvent._skipped(e)
              L.DomEvent._skipEvents[e.type] = true;
          },
  
          _skipped: function (e) {
              var skipped = this._skipEvents[e.type];
              // reset when checking, as it's only used in map container and propagates outside of the map
              this._skipEvents[e.type] = false;
              return skipped;
          },
  
          // check if element really left/entered the event target (for mouseenter/mouseleave)
          _checkMouse: function (el, e) {
  
              var related = e.relatedTarget;
  
              if (!related) { return true; }
  
              try {
                  while (related && (related !== el)) {
                      related = related.parentNode;
                  }
              } catch (err) {
                  return false;
              }
              return (related !== el);
          },
  
          _getEvent: function () { // evil magic for IE
              /*jshint noarg:false */
              var e = window.event;
              if (!e) {
                  var caller = arguments.callee.caller;
                  while (caller) {
                      e = caller['arguments'][0];
                      if (e && window.Event === e.constructor) {
                          break;
                      }
                      caller = caller.caller;
                  }
              }
              return e;
          },
  
          // this is a horrible workaround for a bug in Android where a single touch triggers two click events
          _filterClick: function (e, handler) {
              var timeStamp = (e.timeStamp || e.originalEvent.timeStamp),
                  elapsed = L.DomEvent._lastClick && (timeStamp - L.DomEvent._lastClick);
  
              // are they closer together than 500ms yet more than 100ms?
              // Android typically triggers them ~300ms apart while multiple listeners
              // on the same event should be triggered far faster;
              // or check if click is simulated on the element, and if it is, reject any non-simulated events
  
              if ((elapsed && elapsed > 100 && elapsed < 500) || (e.target._simulatedClick && !e._simulated)) {
                  L.DomEvent.stop(e);
                  return;
              }
              L.DomEvent._lastClick = timeStamp;
  
              return handler(e);
          }
      };
  
      L.DomEvent.on = L.DomEvent.addListener;
      L.DomEvent.off = L.DomEvent.removeListener;
  
  
      /*
       * L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
       */
  
      L.Draggable = L.Class.extend({
          includes: L.Mixin.Events,
  
          statics: {
              START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'],
              END: {
                  mousedown: 'mouseup',
                  touchstart: 'touchend',
                  pointerdown: 'touchend',
                  MSPointerDown: 'touchend'
              },
              MOVE: {
                  mousedown: 'mousemove',
                  touchstart: 'touchmove',
                  pointerdown: 'touchmove',
                  MSPointerDown: 'touchmove'
              }
          },
  
          initialize: function (element, dragStartTarget) {
              this._element = element;
              this._dragStartTarget = dragStartTarget || element;
          },
  
          enable: function () {
              if (this._enabled) { return; }
  
              for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
                  L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
              }
  
              this._enabled = true;
          },
  
          disable: function () {
              if (!this._enabled) { return; }
  
              for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
                  L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
              }
  
              this._enabled = false;
              this._moved = false;
          },
  
          _onDown: function (e) {
              this._moved = false;
  
              if (e.shiftKey || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
  
              L.DomEvent.stopPropagation(e);
  
              if (L.Draggable._disabled) { return; }
  
              L.DomUtil.disableImageDrag();
              L.DomUtil.disableTextSelection();
  
              if (this._moving) { return; }
  
              var first = e.touches ? e.touches[0] : e;
  
              this._startPoint = new L.Point(first.clientX, first.clientY);
              this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
  
              L.DomEvent
                  .on(document, L.Draggable.MOVE[e.type], this._onMove, this)
                  .on(document, L.Draggable.END[e.type], this._onUp, this);
          },
  
          _onMove: function (e) {
              if (e.touches && e.touches.length > 1) {
                  this._moved = true;
                  return;
              }
  
              var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
                  newPoint = new L.Point(first.clientX, first.clientY),
                  offset = newPoint.subtract(this._startPoint);
  
              if (!offset.x && !offset.y) { return; }
              if (L.Browser.touch && Math.abs(offset.x) + Math.abs(offset.y) < 3) { return; }
  
              L.DomEvent.preventDefault(e);
  
              if (!this._moved) {
                  this.fire('dragstart');
  
                  this._moved = true;
                  this._startPos = L.DomUtil.getPosition(this._element).subtract(offset);
  
                  L.DomUtil.addClass(document.body, 'leaflet-dragging');
                  this._lastTarget = e.target || e.srcElement;
                  L.DomUtil.addClass(this._lastTarget, 'leaflet-drag-target');
              }
  
              this._newPos = this._startPos.add(offset);
              this._moving = true;
  
              L.Util.cancelAnimFrame(this._animRequest);
              this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
          },
  
          _updatePosition: function () {
              this.fire('predrag');
              L.DomUtil.setPosition(this._element, this._newPos);
              this.fire('drag');
          },
  
          _onUp: function () {
              L.DomUtil.removeClass(document.body, 'leaflet-dragging');
  
              if (this._lastTarget) {
                  L.DomUtil.removeClass(this._lastTarget, 'leaflet-drag-target');
                  this._lastTarget = null;
              }
  
              for (var i in L.Draggable.MOVE) {
                  L.DomEvent
                      .off(document, L.Draggable.MOVE[i], this._onMove)
                      .off(document, L.Draggable.END[i], this._onUp);
              }
  
              L.DomUtil.enableImageDrag();
              L.DomUtil.enableTextSelection();
  
              if (this._moved && this._moving) {
                  // ensure drag is not fired after dragend
                  L.Util.cancelAnimFrame(this._animRequest);
  
                  this.fire('dragend', {
                      distance: this._newPos.distanceTo(this._startPos)
                  });
              }
  
              this._moving = false;
          }
      });
  
  
      /*
       L.Handler is a base class for handler classes that are used internally to inject
       interaction features like dragging to classes like Map and Marker.
       */
  
      L.Handler = L.Class.extend({
          initialize: function (map) {
              this._map = map;
          },
  
          enable: function () {
              if (this._enabled) { return; }
  
              this._enabled = true;
              this.addHooks();
          },
  
          disable: function () {
              if (!this._enabled) { return; }
  
              this._enabled = false;
              this.removeHooks();
          },
  
          enabled: function () {
              return !!this._enabled;
          }
      });
  
  
      /*
       * L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
       */
  
      L.Map.mergeOptions({
          dragging: true,
  
          inertia: !L.Browser.android23,
          inertiaDeceleration: 3400, // px/s^2
          inertiaMaxSpeed: Infinity, // px/s
          inertiaThreshold: L.Browser.touch ? 32 : 18, // ms
          easeLinearity: 0.25,
  
          // TODO refactor, move to CRS
          worldCopyJump: false
      });
  
      L.Map.Drag = L.Handler.extend({
          addHooks: function () {
              if (!this._draggable) {
                  var map = this._map;
  
                  this._draggable = new L.Draggable(map._mapPane, map._container);
  
                  this._draggable.on({
                      'dragstart': this._onDragStart,
                      'drag': this._onDrag,
                      'dragend': this._onDragEnd
                  }, this);
  
                  if (map.options.worldCopyJump) {
                      this._draggable.on('predrag', this._onPreDrag, this);
                      map.on('viewreset', this._onViewReset, this);
  
                      map.whenReady(this._onViewReset, this);
                  }
              }
              this._draggable.enable();
          },
  
          removeHooks: function () {
              this._draggable.disable();
          },
  
          moved: function () {
              return this._draggable && this._draggable._moved;
          },
  
          _onDragStart: function () {
              var map = this._map;
  
              if (map._panAnim) {
                  map._panAnim.stop();
              }
  
              map
                  .fire('movestart')
                  .fire('dragstart');
  
              if (map.options.inertia) {
                  this._positions = [];
                  this._times = [];
              }
          },
  
          _onDrag: function () {
              if (this._map.options.inertia) {
                  var time = this._lastTime = +new Date(),
                      pos = this._lastPos = this._draggable._newPos;
  
                  this._positions.push(pos);
                  this._times.push(time);
  
                  if (time - this._times[0] > 200) {
                      this._positions.shift();
                      this._times.shift();
                  }
              }
  
              this._map
                  .fire('move')
                  .fire('drag');
          },
  
          _onViewReset: function () {
              // TODO fix hardcoded Earth values
              var pxCenter = this._map.getSize()._divideBy(2),
                  pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
  
              this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
              this._worldWidth = this._map.project([0, 180]).x;
          },
  
          _onPreDrag: function () {
              // TODO refactor to be able to adjust map pane position after zoom
              var worldWidth = this._worldWidth,
                  halfWidth = Math.round(worldWidth / 2),
                  dx = this._initialWorldOffset,
                  x = this._draggable._newPos.x,
                  newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
                  newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
                  newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
  
              this._draggable._newPos.x = newX;
          },
  
          _onDragEnd: function (e) {
              var map = this._map,
                  options = map.options,
                  delay = +new Date() - this._lastTime,
  
                  noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0];
  
              map.fire('dragend', e);
  
              if (noInertia) {
                  map.fire('moveend');
  
              } else {
  
                  var direction = this._lastPos.subtract(this._positions[0]),
                      duration = (this._lastTime + delay - this._times[0]) / 1000,
                      ease = options.easeLinearity,
  
                      speedVector = direction.multiplyBy(ease / duration),
                      speed = speedVector.distanceTo([0, 0]),
  
                      limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
                      limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
  
                      decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
                      offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
  
                  if (!offset.x || !offset.y) {
                      map.fire('moveend');
  
                  } else {
                      offset = map._limitOffset(offset, map.options.maxBounds);
  
                      L.Util.requestAnimFrame(function () {
                          map.panBy(offset, {
                              duration: decelerationDuration,
                              easeLinearity: ease,
                              noMoveStart: true
                          });
                      });
                  }
              }
          }
      });
  
      L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
  
  
      /*
       * L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
       */
  
      L.Map.mergeOptions({
          doubleClickZoom: true
      });
  
      L.Map.DoubleClickZoom = L.Handler.extend({
          addHooks: function () {
              this._map.on('dblclick', this._onDoubleClick, this);
          },
  
          removeHooks: function () {
              this._map.off('dblclick', this._onDoubleClick, this);
          },
  
          _onDoubleClick: function (e) {
              var map = this._map,
                  zoom = map.getZoom() + (e.originalEvent.shiftKey ? -1 : 1);
  
              if (map.options.doubleClickZoom === 'center') {
                  map.setZoom(zoom);
              } else {
                  map.setZoomAround(e.containerPoint, zoom);
              }
          }
      });
  
      L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
  
  
      /*
       * L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
       */
  
      L.Map.mergeOptions({
          scrollWheelZoom: true
      });
  
      L.Map.ScrollWheelZoom = L.Handler.extend({
          addHooks: function () {
              L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
              L.DomEvent.on(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
              this._delta = 0;
          },
  
          removeHooks: function () {
              L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
              L.DomEvent.off(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
          },
  
          _onWheelScroll: function (e) {
              var delta = L.DomEvent.getWheelDelta(e);
  
              this._delta += delta;
              this._lastMousePos = this._map.mouseEventToContainerPoint(e);
  
              if (!this._startTime) {
                  this._startTime = +new Date();
              }
  
              var left = Math.max(40 - (+new Date() - this._startTime), 0);
  
              clearTimeout(this._timer);
              this._timer = setTimeout(L.bind(this._performZoom, this), left);
  
              L.DomEvent.preventDefault(e);
              L.DomEvent.stopPropagation(e);
          },
  
          _performZoom: function () {
              var map = this._map,
                  delta = this._delta,
                  zoom = map.getZoom();
  
              delta = delta > 0 ? Math.ceil(delta) : Math.floor(delta);
              delta = Math.max(Math.min(delta, 4), -4);
              delta = map._limitZoom(zoom + delta) - zoom;
  
              this._delta = 0;
              this._startTime = null;
  
              if (!delta) { return; }
  
              if (map.options.scrollWheelZoom === 'center') {
                  map.setZoom(zoom + delta);
              } else {
                  map.setZoomAround(this._lastMousePos, zoom + delta);
              }
          }
      });
  
      L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
  
  
      /*
       * Extends the event handling code with double tap support for mobile browsers.
       */
  
      L.extend(L.DomEvent, {
  
          _touchstart: L.Browser.msPointer ? 'MSPointerDown' : L.Browser.pointer ? 'pointerdown' : 'touchstart',
          _touchend: L.Browser.msPointer ? 'MSPointerUp' : L.Browser.pointer ? 'pointerup' : 'touchend',
  
          // inspired by Zepto touch code by Thomas Fuchs
          addDoubleTapListener: function (obj, handler, id) {
              var last,
                  doubleTap = false,
                  delay = 250,
                  touch,
                  pre = '_leaflet_',
                  touchstart = this._touchstart,
                  touchend = this._touchend,
                  trackedTouches = [];
  
              function onTouchStart(e) {
                  var count;
  
                  if (L.Browser.pointer) {
                      trackedTouches.push(e.pointerId);
                      count = trackedTouches.length;
                  } else {
                      count = e.touches.length;
                  }
                  if (count > 1) {
                      return;
                  }
  
                  var now = Date.now(),
                      delta = now - (last || now);
  
                  touch = e.touches ? e.touches[0] : e;
                  doubleTap = (delta > 0 && delta <= delay);
                  last = now;
              }
  
              function onTouchEnd(e) {
                  if (L.Browser.pointer) {
                      var idx = trackedTouches.indexOf(e.pointerId);
                      if (idx === -1) {
                          return;
                      }
                      trackedTouches.splice(idx, 1);
                  }
  
                  if (doubleTap) {
                      if (L.Browser.pointer) {
                          // work around .type being readonly with MSPointer* events
                          var newTouch = {},
                              prop;
  
                          // jshint forin:false
                          for (var i in touch) {
                              prop = touch[i];
                              if (typeof prop === 'function') {
                                  newTouch[i] = prop.bind(touch);
                              } else {
                                  newTouch[i] = prop;
                              }
                          }
                          touch = newTouch;
                      }
                      touch.type = 'dblclick';
                      handler(touch);
                      last = null;
                  }
              }
              obj[pre + touchstart + id] = onTouchStart;
              obj[pre + touchend + id] = onTouchEnd;
  
              // on pointer we need to listen on the document, otherwise a drag starting on the map and moving off screen
              // will not come through to us, so we will lose track of how many touches are ongoing
              var endElement = L.Browser.pointer ? document.documentElement : obj;
  
              obj.addEventListener(touchstart, onTouchStart, false);
              endElement.addEventListener(touchend, onTouchEnd, false);
  
              if (L.Browser.pointer) {
                  endElement.addEventListener(L.DomEvent.POINTER_CANCEL, onTouchEnd, false);
              }
  
              return this;
          },
  
          removeDoubleTapListener: function (obj, id) {
              var pre = '_leaflet_';
  
              obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
              (L.Browser.pointer ? document.documentElement : obj).removeEventListener(
                  this._touchend, obj[pre + this._touchend + id], false);
  
              if (L.Browser.pointer) {
                  document.documentElement.removeEventListener(L.DomEvent.POINTER_CANCEL, obj[pre + this._touchend + id],
                      false);
              }
  
              return this;
          }
      });
  
  
      /*
       * Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
       */
  
      L.extend(L.DomEvent, {
  
          //static
          POINTER_DOWN: L.Browser.msPointer ? 'MSPointerDown' : 'pointerdown',
          POINTER_MOVE: L.Browser.msPointer ? 'MSPointerMove' : 'pointermove',
          POINTER_UP: L.Browser.msPointer ? 'MSPointerUp' : 'pointerup',
          POINTER_CANCEL: L.Browser.msPointer ? 'MSPointerCancel' : 'pointercancel',
  
          _pointers: [],
          _pointerDocumentListener: false,
  
          // Provides a touch events wrapper for (ms)pointer events.
          // Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019
          //ref http://www.w3.org/TR/pointerevents/ https://www.w3.org/Bugs/Public/show_bug.cgi?id=22890
  
          addPointerListener: function (obj, type, handler, id) {
  
              switch (type) {
                  case 'touchstart':
                      return this.addPointerListenerStart(obj, type, handler, id);
                  case 'touchend':
                      return this.addPointerListenerEnd(obj, type, handler, id);
                  case 'touchmove':
                      return this.addPointerListenerMove(obj, type, handler, id);
                  default:
                      throw 'Unknown touch event type';
              }
          },
  
          addPointerListenerStart: function (obj, type, handler, id) {
              var pre = '_leaflet_',
                  pointers = this._pointers;
  
              var cb = function (e) {
  
                  L.DomEvent.preventDefault(e);
  
                  var alreadyInArray = false;
                  for (var i = 0; i < pointers.length; i++) {
                      if (pointers[i].pointerId === e.pointerId) {
                          alreadyInArray = true;
                          break;
                      }
                  }
                  if (!alreadyInArray) {
                      pointers.push(e);
                  }
  
                  e.touches = pointers.slice();
                  e.changedTouches = [e];
  
                  handler(e);
              };
  
              obj[pre + 'touchstart' + id] = cb;
              obj.addEventListener(this.POINTER_DOWN, cb, false);
  
              // need to also listen for end events to keep the _pointers list accurate
              // this needs to be on the body and never go away
              if (!this._pointerDocumentListener) {
                  var internalCb = function (e) {
                      for (var i = 0; i < pointers.length; i++) {
                          if (pointers[i].pointerId === e.pointerId) {
                              pointers.splice(i, 1);
                              break;
                          }
                      }
                  };
                  //We listen on the documentElement as any drags that end by moving the touch off the screen get fired there
                  document.documentElement.addEventListener(this.POINTER_UP, internalCb, false);
                  document.documentElement.addEventListener(this.POINTER_CANCEL, internalCb, false);
  
                  this._pointerDocumentListener = true;
              }
  
              return this;
          },
  
          addPointerListenerMove: function (obj, type, handler, id) {
              var pre = '_leaflet_',
                  touches = this._pointers;
  
              function cb(e) {
  
                  // don't fire touch moves when mouse isn't down
                  if ((e.pointerType === e.MSPOINTER_TYPE_MOUSE || e.pointerType === 'mouse') && e.buttons === 0) { return; }
  
                  for (var i = 0; i < touches.length; i++) {
                      if (touches[i].pointerId === e.pointerId) {
                          touches[i] = e;
                          break;
                      }
                  }
  
                  e.touches = touches.slice();
                  e.changedTouches = [e];
  
                  handler(e);
              }
  
              obj[pre + 'touchmove' + id] = cb;
              obj.addEventListener(this.POINTER_MOVE, cb, false);
  
              return this;
          },
  
          addPointerListenerEnd: function (obj, type, handler, id) {
              var pre = '_leaflet_',
                  touches = this._pointers;
  
              var cb = function (e) {
                  for (var i = 0; i < touches.length; i++) {
                      if (touches[i].pointerId === e.pointerId) {
                          touches.splice(i, 1);
                          break;
                      }
                  }
  
                  e.touches = touches.slice();
                  e.changedTouches = [e];
  
                  handler(e);
              };
  
              obj[pre + 'touchend' + id] = cb;
              obj.addEventListener(this.POINTER_UP, cb, false);
              obj.addEventListener(this.POINTER_CANCEL, cb, false);
  
              return this;
          },
  
          removePointerListener: function (obj, type, id) {
              var pre = '_leaflet_',
                  cb = obj[pre + type + id];
  
              switch (type) {
                  case 'touchstart':
                      obj.removeEventListener(this.POINTER_DOWN, cb, false);
                      break;
                  case 'touchmove':
                      obj.removeEventListener(this.POINTER_MOVE, cb, false);
                      break;
                  case 'touchend':
                      obj.removeEventListener(this.POINTER_UP, cb, false);
                      obj.removeEventListener(this.POINTER_CANCEL, cb, false);
                      break;
              }
  
              return this;
          }
      });
  
  
      /*
       * L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
       */
  
      L.Map.mergeOptions({
          touchZoom: L.Browser.touch && !L.Browser.android23,
          bounceAtZoomLimits: true
      });
  
      L.Map.TouchZoom = L.Handler.extend({
          addHooks: function () {
              L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
          },
  
          removeHooks: function () {
              L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
          },
  
          _onTouchStart: function (e) {
              var map = this._map;
  
              if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
  
              var p1 = map.mouseEventToLayerPoint(e.touches[0]),
                  p2 = map.mouseEventToLayerPoint(e.touches[1]),
                  viewCenter = map._getCenterLayerPoint();
  
              this._startCenter = p1.add(p2)._divideBy(2);
              this._startDist = p1.distanceTo(p2);
  
              this._moved = false;
              this._zooming = true;
  
              this._centerOffset = viewCenter.subtract(this._startCenter);
  
              if (map._panAnim) {
                  map._panAnim.stop();
              }
  
              L.DomEvent
                  .on(document, 'touchmove', this._onTouchMove, this)
                  .on(document, 'touchend', this._onTouchEnd, this);
  
              L.DomEvent.preventDefault(e);
          },
  
          _onTouchMove: function (e) {
              var map = this._map;
  
              if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
  
              var p1 = map.mouseEventToLayerPoint(e.touches[0]),
                  p2 = map.mouseEventToLayerPoint(e.touches[1]);
  
              this._scale = p1.distanceTo(p2) / this._startDist;
              this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
  
              if (this._scale === 1) { return; }
  
              if (!map.options.bounceAtZoomLimits) {
                  if ((map.getZoom() === map.getMinZoom() && this._scale < 1) ||
                      (map.getZoom() === map.getMaxZoom() && this._scale > 1)) { return; }
              }
  
              if (!this._moved) {
                  L.DomUtil.addClass(map._mapPane, 'leaflet-touching');
  
                  map
                      .fire('movestart')
                      .fire('zoomstart');
  
                  this._moved = true;
              }
  
              L.Util.cancelAnimFrame(this._animRequest);
              this._animRequest = L.Util.requestAnimFrame(
                  this._updateOnMove, this, true, this._map._container);
  
              L.DomEvent.preventDefault(e);
          },
  
          _updateOnMove: function () {
              var map = this._map,
                  origin = this._getScaleOrigin(),
                  center = map.layerPointToLatLng(origin),
                  zoom = map.getScaleZoom(this._scale);
  
              map._animateZoom(center, zoom, this._startCenter, this._scale, this._delta, false, true);
          },
  
          _onTouchEnd: function () {
              if (!this._moved || !this._zooming) {
                  this._zooming = false;
                  return;
              }
  
              var map = this._map;
  
              this._zooming = false;
              L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
              L.Util.cancelAnimFrame(this._animRequest);
  
              L.DomEvent
                  .off(document, 'touchmove', this._onTouchMove)
                  .off(document, 'touchend', this._onTouchEnd);
  
              var origin = this._getScaleOrigin(),
                  center = map.layerPointToLatLng(origin),
  
                  oldZoom = map.getZoom(),
                  floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom,
                  roundZoomDelta = (floatZoomDelta > 0 ?
                      Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
  
                  zoom = map._limitZoom(oldZoom + roundZoomDelta),
                  scale = map.getZoomScale(zoom) / this._scale;
  
              map._animateZoom(center, zoom, origin, scale);
          },
  
          _getScaleOrigin: function () {
              var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
              return this._startCenter.add(centerOffset);
          }
      });
  
      L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
  
  
      /*
       * L.Map.Tap is used to enable mobile hacks like quick taps and long hold.
       */
  
      L.Map.mergeOptions({
          tap: true,
          tapTolerance: 15
      });
  
      L.Map.Tap = L.Handler.extend({
          addHooks: function () {
              L.DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
          },
  
          removeHooks: function () {
              L.DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
          },
  
          _onDown: function (e) {
              if (!e.touches) { return; }
  
              L.DomEvent.preventDefault(e);
  
              this._fireClick = true;
  
              // don't simulate click or track longpress if more than 1 touch
              if (e.touches.length > 1) {
                  this._fireClick = false;
                  clearTimeout(this._holdTimeout);
                  return;
              }
  
              var first = e.touches[0],
                  el = first.target;
  
              this._startPos = this._newPos = new L.Point(first.clientX, first.clientY);
  
              // if touching a link, highlight it
              if (el.tagName && el.tagName.toLowerCase() === 'a') {
                  L.DomUtil.addClass(el, 'leaflet-active');
              }
  
              // simulate long hold but setting a timeout
              this._holdTimeout = setTimeout(L.bind(function () {
                  if (this._isTapValid()) {
                      this._fireClick = false;
                      this._onUp();
                      this._simulateEvent('contextmenu', first);
                  }
              }, this), 1000);
  
              L.DomEvent
                  .on(document, 'touchmove', this._onMove, this)
                  .on(document, 'touchend', this._onUp, this);
          },
  
          _onUp: function (e) {
              clearTimeout(this._holdTimeout);
  
              L.DomEvent
                  .off(document, 'touchmove', this._onMove, this)
                  .off(document, 'touchend', this._onUp, this);
  
              if (this._fireClick && e && e.changedTouches) {
  
                  var first = e.changedTouches[0],
                      el = first.target;
  
                  if (el && el.tagName && el.tagName.toLowerCase() === 'a') {
                      L.DomUtil.removeClass(el, 'leaflet-active');
                  }
  
                  // simulate click if the touch didn't move too much
                  if (this._isTapValid()) {
                      this._simulateEvent('click', first);
                  }
              }
          },
  
          _isTapValid: function () {
              return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
          },
  
          _onMove: function (e) {
              var first = e.touches[0];
              this._newPos = new L.Point(first.clientX, first.clientY);
          },
  
          _simulateEvent: function (type, e) {
              var simulatedEvent = document.createEvent('MouseEvents');
  
              simulatedEvent._simulated = true;
              e.target._simulatedClick = true;
  
              simulatedEvent.initMouseEvent(
                  type, true, true, window, 1,
                  e.screenX, e.screenY,
                  e.clientX, e.clientY,
                  false, false, false, false, 0, null);
  
              e.target.dispatchEvent(simulatedEvent);
          }
      });
  
      if (L.Browser.touch && !L.Browser.pointer) {
          L.Map.addInitHook('addHandler', 'tap', L.Map.Tap);
      }
  
  
      /*
       * L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
       * (zoom to a selected bounding box), enabled by default.
       */
  
      L.Map.mergeOptions({
          boxZoom: true
      });
  
      L.Map.BoxZoom = L.Handler.extend({
          initialize: function (map) {
              this._map = map;
              this._container = map._container;
              this._pane = map._panes.overlayPane;
              this._moved = false;
          },
  
          addHooks: function () {
              L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
          },
  
          removeHooks: function () {
              L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
              this._moved = false;
          },
  
          moved: function () {
              return this._moved;
          },
  
          _onMouseDown: function (e) {
              this._moved = false;
  
              if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
  
              L.DomUtil.disableTextSelection();
              L.DomUtil.disableImageDrag();
  
              this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
  
              L.DomEvent
                  .on(document, 'mousemove', this._onMouseMove, this)
                  .on(document, 'mouseup', this._onMouseUp, this)
                  .on(document, 'keydown', this._onKeyDown, this);
          },
  
          _onMouseMove: function (e) {
              if (!this._moved) {
                  this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
                  L.DomUtil.setPosition(this._box, this._startLayerPoint);
  
                  //TODO refactor: move cursor to styles
                  this._container.style.cursor = 'crosshair';
                  this._map.fire('boxzoomstart');
              }
  
              var startPoint = this._startLayerPoint,
                  box = this._box,
  
                  layerPoint = this._map.mouseEventToLayerPoint(e),
                  offset = layerPoint.subtract(startPoint),
  
                  newPos = new L.Point(
                      Math.min(layerPoint.x, startPoint.x),
                      Math.min(layerPoint.y, startPoint.y));
  
              L.DomUtil.setPosition(box, newPos);
  
              this._moved = true;
  
              // TODO refactor: remove hardcoded 4 pixels
              box.style.width = (Math.max(0, Math.abs(offset.x) - 4)) + 'px';
              box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px';
          },
  
          _finish: function () {
              if (this._moved) {
                  this._pane.removeChild(this._box);
                  this._container.style.cursor = '';
              }
  
              L.DomUtil.enableTextSelection();
              L.DomUtil.enableImageDrag();
  
              L.DomEvent
                  .off(document, 'mousemove', this._onMouseMove)
                  .off(document, 'mouseup', this._onMouseUp)
                  .off(document, 'keydown', this._onKeyDown);
          },
  
          _onMouseUp: function (e) {
  
              this._finish();
  
              var map = this._map,
                  layerPoint = map.mouseEventToLayerPoint(e);
  
              if (this._startLayerPoint.equals(layerPoint)) { return; }
  
              var bounds = new L.LatLngBounds(
                  map.layerPointToLatLng(this._startLayerPoint),
                  map.layerPointToLatLng(layerPoint));
  
              map.fitBounds(bounds);
  
              map.fire('boxzoomend', {
                  boxZoomBounds: bounds
              });
          },
  
          _onKeyDown: function (e) {
              if (e.keyCode === 27) {
                  this._finish();
              }
          }
      });
  
      L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
  
  
      /*
       * L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
       */
  
      L.Map.mergeOptions({
          keyboard: true,
          keyboardPanOffset: 80,
          keyboardZoomOffset: 1
      });
  
      L.Map.Keyboard = L.Handler.extend({
  
          keyCodes: {
              left: [37],
              right: [39],
              down: [40],
              up: [38],
              zoomIn: [187, 107, 61, 171],
              zoomOut: [189, 109, 173]
          },
  
          initialize: function (map) {
              this._map = map;
  
              this._setPanOffset(map.options.keyboardPanOffset);
              this._setZoomOffset(map.options.keyboardZoomOffset);
          },
  
          addHooks: function () {
              var container = this._map._container;
  
              // make the container focusable by tabbing
              if (container.tabIndex === -1) {
                  container.tabIndex = '0';
              }
  
              L.DomEvent
                  .on(container, 'focus', this._onFocus, this)
                  .on(container, 'blur', this._onBlur, this)
                  .on(container, 'mousedown', this._onMouseDown, this);
  
              this._map
                  .on('focus', this._addHooks, this)
                  .on('blur', this._removeHooks, this);
          },
  
          removeHooks: function () {
              this._removeHooks();
  
              var container = this._map._container;
  
              L.DomEvent
                  .off(container, 'focus', this._onFocus, this)
                  .off(container, 'blur', this._onBlur, this)
                  .off(container, 'mousedown', this._onMouseDown, this);
  
              this._map
                  .off('focus', this._addHooks, this)
                  .off('blur', this._removeHooks, this);
          },
  
          _onMouseDown: function () {
              if (this._focused) { return; }
  
              var body = document.body,
                  docEl = document.documentElement,
                  top = body.scrollTop || docEl.scrollTop,
                  left = body.scrollLeft || docEl.scrollLeft;
  
              this._map._container.focus();
  
              window.scrollTo(left, top);
          },
  
          _onFocus: function () {
              this._focused = true;
              this._map.fire('focus');
          },
  
          _onBlur: function () {
              this._focused = false;
              this._map.fire('blur');
          },
  
          _setPanOffset: function (pan) {
              var keys = this._panKeys = {},
                  codes = this.keyCodes,
                  i, len;
  
              for (i = 0, len = codes.left.length; i < len; i++) {
                  keys[codes.left[i]] = [-1 * pan, 0];
              }
              for (i = 0, len = codes.right.length; i < len; i++) {
                  keys[codes.right[i]] = [pan, 0];
              }
              for (i = 0, len = codes.down.length; i < len; i++) {
                  keys[codes.down[i]] = [0, pan];
              }
              for (i = 0, len = codes.up.length; i < len; i++) {
                  keys[codes.up[i]] = [0, -1 * pan];
              }
          },
  
          _setZoomOffset: function (zoom) {
              var keys = this._zoomKeys = {},
                  codes = this.keyCodes,
                  i, len;
  
              for (i = 0, len = codes.zoomIn.length; i < len; i++) {
                  keys[codes.zoomIn[i]] = zoom;
              }
              for (i = 0, len = codes.zoomOut.length; i < len; i++) {
                  keys[codes.zoomOut[i]] = -zoom;
              }
          },
  
          _addHooks: function () {
              L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
          },
  
          _removeHooks: function () {
              L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
          },
  
          _onKeyDown: function (e) {
              var key = e.keyCode,
                  map = this._map;
  
              if (key in this._panKeys) {
  
                  if (map._panAnim && map._panAnim._inProgress) { return; }
  
                  map.panBy(this._panKeys[key]);
  
                  if (map.options.maxBounds) {
                      map.panInsideBounds(map.options.maxBounds);
                  }
  
              } else if (key in this._zoomKeys) {
                  map.setZoom(map.getZoom() + this._zoomKeys[key]);
  
              } else {
                  return;
              }
  
              L.DomEvent.stop(e);
          }
      });
  
      L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
  
  
      /*
       * L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
       */
  
      L.Handler.MarkerDrag = L.Handler.extend({
          initialize: function (marker) {
              this._marker = marker;
          },
  
          addHooks: function () {
              var icon = this._marker._icon;
              if (!this._draggable) {
                  this._draggable = new L.Draggable(icon, icon);
              }
  
              this._draggable
                  .on('dragstart', this._onDragStart, this)
                  .on('drag', this._onDrag, this)
                  .on('dragend', this._onDragEnd, this);
              this._draggable.enable();
              L.DomUtil.addClass(this._marker._icon, 'leaflet-marker-draggable');
          },
  
          removeHooks: function () {
              this._draggable
                  .off('dragstart', this._onDragStart, this)
                  .off('drag', this._onDrag, this)
                  .off('dragend', this._onDragEnd, this);
  
              this._draggable.disable();
              L.DomUtil.removeClass(this._marker._icon, 'leaflet-marker-draggable');
          },
  
          moved: function () {
              return this._draggable && this._draggable._moved;
          },
  
          _onDragStart: function () {
              this._marker
                  .closePopup()
                  .fire('movestart')
                  .fire('dragstart');
          },
  
          _onDrag: function () {
              var marker = this._marker,
                  shadow = marker._shadow,
                  iconPos = L.DomUtil.getPosition(marker._icon),
                  latlng = marker._map.layerPointToLatLng(iconPos);
  
              // update shadow position
              if (shadow) {
                  L.DomUtil.setPosition(shadow, iconPos);
              }
  
              marker._latlng = latlng;
  
              marker
                  .fire('move', { latlng: latlng })
                  .fire('drag');
          },
  
          _onDragEnd: function (e) {
              this._marker
                  .fire('moveend')
                  .fire('dragend', e);
          }
      });
  
  
      /*
       * L.Control is a base class for implementing map controls. Handles positioning.
       * All other controls extend from this class.
       */
  
      L.Control = L.Class.extend({
          options: {
              position: 'topright'
          },
  
          initialize: function (options) {
              L.setOptions(this, options);
          },
  
          getPosition: function () {
              return this.options.position;
          },
  
          setPosition: function (position) {
              var map = this._map;
  
              if (map) {
                  map.removeControl(this);
              }
  
              this.options.position = position;
  
              if (map) {
                  map.addControl(this);
              }
  
              return this;
          },
  
          getContainer: function () {
              return this._container;
          },
  
          addTo: function (map) {
              this._map = map;
  
              var container = this._container = this.onAdd(map),
                  pos = this.getPosition(),
                  corner = map._controlCorners[pos];
  
              L.DomUtil.addClass(container, 'leaflet-control');
  
              if (pos.indexOf('bottom') !== -1) {
                  corner.insertBefore(container, corner.firstChild);
              } else {
                  corner.appendChild(container);
              }
  
              return this;
          },
  
          removeFrom: function (map) {
              var pos = this.getPosition(),
                  corner = map._controlCorners[pos];
  
              corner.removeChild(this._container);
              this._map = null;
  
              if (this.onRemove) {
                  this.onRemove(map);
              }
  
              return this;
          },
  
          _refocusOnMap: function () {
              if (this._map) {
                  this._map.getContainer().focus();
              }
          }
      });
  
      L.control = function (options) {
          return new L.Control(options);
      };
  
  
      // adds control-related methods to L.Map
  
      L.Map.include({
          addControl: function (control) {
              control.addTo(this);
              return this;
          },
  
          removeControl: function (control) {
              control.removeFrom(this);
              return this;
          },
  
          _initControlPos: function () {
              var corners = this._controlCorners = {},
                  l = 'leaflet-',
                  container = this._controlContainer =
                      L.DomUtil.create('div', l + 'control-container', this._container);
  
              function createCorner(vSide, hSide) {
                  var className = l + vSide + ' ' + l + hSide;
  
                  corners[vSide + hSide] = L.DomUtil.create('div', className, container);
              }
  
              createCorner('top', 'left');
              createCorner('top', 'right');
              createCorner('bottom', 'left');
              createCorner('bottom', 'right');
          },
  
          _clearControlPos: function () {
              this._container.removeChild(this._controlContainer);
          }
      });
  
  
      /*
       * L.Control.Zoom is used for the default zoom buttons on the map.
       */
  
      L.Control.Zoom = L.Control.extend({
          options: {
              position: 'topleft',
              zoomInText: '+',
              zoomInTitle: 'Zoom in',
              zoomOutText: '-',
              zoomOutTitle: 'Zoom out'
          },
  
          onAdd: function (map) {
              var zoomName = 'leaflet-control-zoom',
                  container = L.DomUtil.create('div', zoomName + ' leaflet-bar');
  
              this._map = map;
  
              this._zoomInButton = this._createButton(
                  this.options.zoomInText, this.options.zoomInTitle,
                  zoomName + '-in', container, this._zoomIn, this);
              this._zoomOutButton = this._createButton(
                  this.options.zoomOutText, this.options.zoomOutTitle,
                  zoomName + '-out', container, this._zoomOut, this);
  
              this._updateDisabled();
              map.on('zoomend zoomlevelschange', this._updateDisabled, this);
  
              return container;
          },
  
          onRemove: function (map) {
              map.off('zoomend zoomlevelschange', this._updateDisabled, this);
          },
  
          _zoomIn: function (e) {
              this._map.zoomIn(e.shiftKey ? 3 : 1);
          },
  
          _zoomOut: function (e) {
              this._map.zoomOut(e.shiftKey ? 3 : 1);
          },
  
          _createButton: function (html, title, className, container, fn, context) {
              var link = L.DomUtil.create('a', className, container);
              link.innerHTML = html;
              link.href = '#';
              link.title = title;
  
              var stop = L.DomEvent.stopPropagation;
  
              L.DomEvent
                  .on(link, 'click', stop)
                  .on(link, 'mousedown', stop)
                  .on(link, 'dblclick', stop)
                  .on(link, 'click', L.DomEvent.preventDefault)
                  .on(link, 'click', fn, context)
                  .on(link, 'click', this._refocusOnMap, context);
  
              return link;
          },
  
          _updateDisabled: function () {
              var map = this._map,
                  className = 'leaflet-disabled';
  
              L.DomUtil.removeClass(this._zoomInButton, className);
              L.DomUtil.removeClass(this._zoomOutButton, className);
  
              if (map._zoom === map.getMinZoom()) {
                  L.DomUtil.addClass(this._zoomOutButton, className);
              }
              if (map._zoom === map.getMaxZoom()) {
                  L.DomUtil.addClass(this._zoomInButton, className);
              }
          }
      });
  
      L.Map.mergeOptions({
          zoomControl: true
      });
  
      L.Map.addInitHook(function () {
          if (this.options.zoomControl) {
              this.zoomControl = new L.Control.Zoom();
              this.addControl(this.zoomControl);
          }
      });
  
      L.control.zoom = function (options) {
          return new L.Control.Zoom(options);
      };
  
  
  
      /*
       * L.Control.Attribution is used for displaying attribution on the map (added by default).
       */
  
      L.Control.Attribution = L.Control.extend({
          options: {
              position: 'bottomright',
              prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">Leaflet</a>'
          },
  
          initialize: function (options) {
              L.setOptions(this, options);
  
              this._attributions = {};
          },
  
          onAdd: function (map) {
              this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
              L.DomEvent.disableClickPropagation(this._container);
  
              for (var i in map._layers) {
                  if (map._layers[i].getAttribution) {
                      this.addAttribution(map._layers[i].getAttribution());
                  }
              }
  
              map
                  .on('layeradd', this._onLayerAdd, this)
                  .on('layerremove', this._onLayerRemove, this);
  
              this._update();
  
              return this._container;
          },
  
          onRemove: function (map) {
              map
                  .off('layeradd', this._onLayerAdd)
                  .off('layerremove', this._onLayerRemove);
  
          },
  
          setPrefix: function (prefix) {
              this.options.prefix = prefix;
              this._update();
              return this;
          },
  
          addAttribution: function (text) {
              if (!text) { return; }
  
              if (!this._attributions[text]) {
                  this._attributions[text] = 0;
              }
              this._attributions[text]++;
  
              this._update();
  
              return this;
          },
  
          removeAttribution: function (text) {
              if (!text) { return; }
  
              if (this._attributions[text]) {
                  this._attributions[text]--;
                  this._update();
              }
  
              return this;
          },
  
          _update: function () {
              if (!this._map) { return; }
  
              var attribs = [];
  
              for (var i in this._attributions) {
                  if (this._attributions[i]) {
                      attribs.push(i);
                  }
              }
  
              var prefixAndAttribs = [];
  
              if (this.options.prefix) {
                  prefixAndAttribs.push(this.options.prefix);
              }
              if (attribs.length) {
                  prefixAndAttribs.push(attribs.join(', '));
              }
  
              this._container.innerHTML = prefixAndAttribs.join(' | ');
          },
  
          _onLayerAdd: function (e) {
              if (e.layer.getAttribution) {
                  this.addAttribution(e.layer.getAttribution());
              }
          },
  
          _onLayerRemove: function (e) {
              if (e.layer.getAttribution) {
                  this.removeAttribution(e.layer.getAttribution());
              }
          }
      });
  
      L.Map.mergeOptions({
          attributionControl: true
      });
  
      L.Map.addInitHook(function () {
          if (this.options.attributionControl) {
              this.attributionControl = (new L.Control.Attribution()).addTo(this);
          }
      });
  
      L.control.attribution = function (options) {
          return new L.Control.Attribution(options);
      };
  
  
      /*
       * L.Control.Scale is used for displaying metric/imperial scale on the map.
       */
  
      L.Control.Scale = L.Control.extend({
          options: {
              position: 'bottomleft',
              maxWidth: 100,
              metric: true,
              imperial: true,
              updateWhenIdle: false
          },
  
          onAdd: function (map) {
              this._map = map;
  
              var className = 'leaflet-control-scale',
                  container = L.DomUtil.create('div', className),
                  options = this.options;
  
              this._addScales(options, className, container);
  
              map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
              map.whenReady(this._update, this);
  
              return container;
          },
  
          onRemove: function (map) {
              map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
          },
  
          _addScales: function (options, className, container) {
              if (options.metric) {
                  this._mScale = L.DomUtil.create('div', className + '-line', container);
              }
              if (options.imperial) {
                  this._iScale = L.DomUtil.create('div', className + '-line', container);
              }
          },
  
          _update: function () {
              var bounds = this._map.getBounds(),
                  centerLat = bounds.getCenter().lat,
                  halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
                  dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180,
  
                  size = this._map.getSize(),
                  options = this.options,
                  maxMeters = 0;
  
              if (size.x > 0) {
                  maxMeters = dist * (options.maxWidth / size.x);
              }
  
              this._updateScales(options, maxMeters);
          },
  
          _updateScales: function (options, maxMeters) {
              if (options.metric && maxMeters) {
                  this._updateMetric(maxMeters);
              }
  
              if (options.imperial && maxMeters) {
                  this._updateImperial(maxMeters);
              }
          },
  
          _updateMetric: function (maxMeters) {
              var meters = this._getRoundNum(maxMeters);
  
              this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px';
              this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
          },
  
          _updateImperial: function (maxMeters) {
              var maxFeet = maxMeters * 3.2808399,
                  scale = this._iScale,
                  maxMiles, miles, feet;
  
              if (maxFeet > 5280) {
                  maxMiles = maxFeet / 5280;
                  miles = this._getRoundNum(maxMiles);
  
                  scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px';
                  scale.innerHTML = miles + ' mi';
  
              } else {
                  feet = this._getRoundNum(maxFeet);
  
                  scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px';
                  scale.innerHTML = feet + ' ft';
              }
          },
  
          _getScaleWidth: function (ratio) {
              return Math.round(this.options.maxWidth * ratio) - 10;
          },
  
          _getRoundNum: function (num) {
              var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
                  d = num / pow10;
  
              d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1;
  
              return pow10 * d;
          }
      });
  
      L.control.scale = function (options) {
          return new L.Control.Scale(options);
      };
  
  
      /*
       * L.Control.Layers is a control to allow users to switch between different layers on the map.
       */
  
      L.Control.Layers = L.Control.extend({
          options: {
              collapsed: true,
              position: 'topright',
              autoZIndex: true
          },
  
          initialize: function (baseLayers, overlays, options) {
              L.setOptions(this, options);
  
              this._layers = {};
              this._lastZIndex = 0;
              this._handlingClick = false;
  
              for (var i in baseLayers) {
                  this._addLayer(baseLayers[i], i);
              }
  
              for (i in overlays) {
                  this._addLayer(overlays[i], i, true);
              }
          },
  
          onAdd: function (map) {
              this._initLayout();
              this._update();
  
              map
                  .on('layeradd', this._onLayerChange, this)
                  .on('layerremove', this._onLayerChange, this);
  
              return this._container;
          },
  
          onRemove: function (map) {
              map
                  .off('layeradd', this._onLayerChange, this)
                  .off('layerremove', this._onLayerChange, this);
          },
  
          addBaseLayer: function (layer, name) {
              this._addLayer(layer, name);
              this._update();
              return this;
          },
  
          addOverlay: function (layer, name) {
              this._addLayer(layer, name, true);
              this._update();
              return this;
          },
  
          removeLayer: function (layer) {
              var id = L.stamp(layer);
              delete this._layers[id];
              this._update();
              return this;
          },
  
          _initLayout: function () {
              var className = 'leaflet-control-layers',
                  container = this._container = L.DomUtil.create('div', className);
  
              //Makes this work on IE10 Touch devices by stopping it from firing a mouseout event when the touch is released
              container.setAttribute('aria-haspopup', true);
  
              if (!L.Browser.touch) {
                  L.DomEvent
                      .disableClickPropagation(container)
                      .disableScrollPropagation(container);
              } else {
                  L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
              }
  
              var form = this._form = L.DomUtil.create('form', className + '-list');
  
              if (this.options.collapsed) {
                  if (!L.Browser.android) {
                      L.DomEvent
                          .on(container, 'mouseover', this._expand, this)
                          .on(container, 'mouseout', this._collapse, this);
                  }
                  var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
                  link.href = '#';
                  link.title = 'Layers';
  
                  if (L.Browser.touch) {
                      L.DomEvent
                          .on(link, 'click', L.DomEvent.stop)
                          .on(link, 'click', this._expand, this);
                  }
                  else {
                      L.DomEvent.on(link, 'focus', this._expand, this);
                  }
                  //Work around for Firefox android issue https://github.com/Leaflet/Leaflet/issues/2033
                  L.DomEvent.on(form, 'click', function () {
                      setTimeout(L.bind(this._onInputClick, this), 0);
                  }, this);
  
                  this._map.on('click', this._collapse, this);
                  // TODO keyboard accessibility
              } else {
                  this._expand();
              }
  
              this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
              this._separator = L.DomUtil.create('div', className + '-separator', form);
              this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
  
              container.appendChild(form);
          },
  
          _addLayer: function (layer, name, overlay) {
              var id = L.stamp(layer);
  
              this._layers[id] = {
                  layer: layer,
                  name: name,
                  overlay: overlay
              };
  
              if (this.options.autoZIndex && layer.setZIndex) {
                  this._lastZIndex++;
                  layer.setZIndex(this._lastZIndex);
              }
          },
  
          _update: function () {
              if (!this._container) {
                  return;
              }
  
              this._baseLayersList.innerHTML = '';
              this._overlaysList.innerHTML = '';
  
              var baseLayersPresent = false,
                  overlaysPresent = false,
                  i, obj;
  
              for (i in this._layers) {
                  obj = this._layers[i];
                  this._addItem(obj);
                  overlaysPresent = overlaysPresent || obj.overlay;
                  baseLayersPresent = baseLayersPresent || !obj.overlay;
              }
  
              this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
          },
  
          _onLayerChange: function (e) {
              var obj = this._layers[L.stamp(e.layer)];
  
              if (!obj) { return; }
  
              if (!this._handlingClick) {
                  this._update();
              }
  
              var type = obj.overlay ?
                  (e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') :
                  (e.type === 'layeradd' ? 'baselayerchange' : null);
  
              if (type) {
                  this._map.fire(type, obj);
              }
          },
  
          // IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
          _createRadioElement: function (name, checked) {
  
              var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"';
              if (checked) {
                  radioHtml += ' checked="checked"';
              }
              radioHtml += '/>';
  
              var radioFragment = document.createElement('div');
              radioFragment.innerHTML = radioHtml;
  
              return radioFragment.firstChild;
          },
  
          _addItem: function (obj) {
              var label = document.createElement('label'),
                  input,
                  checked = this._map.hasLayer(obj.layer);
  
              if (obj.overlay) {
                  input = document.createElement('input');
                  input.type = 'checkbox';
                  input.className = 'leaflet-control-layers-selector';
                  input.defaultChecked = checked;
              } else {
                  input = this._createRadioElement('leaflet-base-layers', checked);
              }
  
              input.layerId = L.stamp(obj.layer);
  
              L.DomEvent.on(input, 'click', this._onInputClick, this);
  
              var name = document.createElement('span');
              name.innerHTML = ' ' + obj.name;
  
              label.appendChild(input);
              label.appendChild(name);
  
              var container = obj.overlay ? this._overlaysList : this._baseLayersList;
              container.appendChild(label);
  
              return label;
          },
  
          _onInputClick: function () {
              var i, input, obj,
                  inputs = this._form.getElementsByTagName('input'),
                  inputsLen = inputs.length;
  
              this._handlingClick = true;
  
              for (i = 0; i < inputsLen; i++) {
                  input = inputs[i];
                  obj = this._layers[input.layerId];
  
                  if (input.checked && !this._map.hasLayer(obj.layer)) {
                      this._map.addLayer(obj.layer);
  
                  } else if (!input.checked && this._map.hasLayer(obj.layer)) {
                      this._map.removeLayer(obj.layer);
                  }
              }
  
              this._handlingClick = false;
  
              this._refocusOnMap();
          },
  
          _expand: function () {
              L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
          },
  
          _collapse: function () {
              this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
          }
      });
  
      L.control.layers = function (baseLayers, overlays, options) {
          return new L.Control.Layers(baseLayers, overlays, options);
      };
  
  
      /*
       * L.PosAnimation is used by Leaflet internally for pan animations.
       */
  
      L.PosAnimation = L.Class.extend({
          includes: L.Mixin.Events,
  
          run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
              this.stop();
  
              this._el = el;
              this._inProgress = true;
              this._newPos = newPos;
  
              this.fire('start');
  
              el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) +
                  's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)';
  
              L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
              L.DomUtil.setPosition(el, newPos);
  
              // toggle reflow, Chrome flickers for some reason if you don't do this
              L.Util.falseFn(el.offsetWidth);
  
              // there's no native way to track value updates of transitioned properties, so we imitate this
              this._stepTimer = setInterval(L.bind(this._onStep, this), 50);
          },
  
          stop: function () {
              if (!this._inProgress) { return; }
  
              // if we just removed the transition property, the element would jump to its final position,
              // so we need to make it stay at the current position
  
              L.DomUtil.setPosition(this._el, this._getPos());
              this._onTransitionEnd();
              L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation
          },
  
          _onStep: function () {
              var stepPos = this._getPos();
              if (!stepPos) {
                  this._onTransitionEnd();
                  return;
              }
              // jshint camelcase: false
              // make L.DomUtil.getPosition return intermediate position value during animation
              this._el._leaflet_pos = stepPos;
  
              this.fire('step');
          },
  
          // you can't easily get intermediate values of properties animated with CSS3 Transitions,
          // we need to parse computed style (in case of transform it returns matrix string)
  
          _transformRe: /([-+]?(?:\d*\.)?\d+)\D*, ([-+]?(?:\d*\.)?\d+)\D*\)/,
  
          _getPos: function () {
              var left, top, matches,
                  el = this._el,
                  style = window.getComputedStyle(el);
  
              if (L.Browser.any3d) {
                  matches = style[L.DomUtil.TRANSFORM].match(this._transformRe);
                  if (!matches) { return; }
                  left = parseFloat(matches[1]);
                  top = parseFloat(matches[2]);
              } else {
                  left = parseFloat(style.left);
                  top = parseFloat(style.top);
              }
  
              return new L.Point(left, top, true);
          },
  
          _onTransitionEnd: function () {
              L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
  
              if (!this._inProgress) { return; }
              this._inProgress = false;
  
              this._el.style[L.DomUtil.TRANSITION] = '';
  
              // jshint camelcase: false
              // make sure L.DomUtil.getPosition returns the final position value after animation
              this._el._leaflet_pos = this._newPos;
  
              clearInterval(this._stepTimer);
  
              this.fire('step').fire('end');
          }
  
      });
  
  
      /*
       * Extends L.Map to handle panning animations.
       */
  
      L.Map.include({
  
          setView: function (center, zoom, options) {
  
              zoom = (zoom === undefined) ? this._zoom : this._limitZoom(zoom);
              center = this._limitCenter(L.latLng(center), zoom, this.options.maxBounds);
              options = options || {};
              var doAnimate = true;
  
              if (this._panAnim) {
                  this._panAnim.stop();
              }
  
              if (this._loaded && !options.reset && options !== true) {
  
                  if (options.animate !== undefined) {
                      options.zoom = L.extend({ animate: options.animate }, options.zoom);
                      options.pan = L.extend({ animate: options.animate }, options.pan);
                  }
  
                  // try animating pan or zoom
                  doAnimate = (typeof options.doAnimate === 'undefined') ? true : false;
  
                  // try animating pan or zoom
                  var animated;
                  if (this._zoom !== zoom) {
                      animated = this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom);
                  } else {
                      if (doAnimate) {
                          animated = this._tryAnimatedPan(center, options.pan);
                      }
                  }
  
                  if (animated) {
                      // prevent resize handler call, the view will refresh after animation anyway
                      clearTimeout(this._sizeTimer);
                      return this;
                  }
              }
  
              var preserveMapOffset = false;
              if (doAnimate === false) {
                  preserveMapOffset = true;
              }
              // animation didn't start, just reset the map view
              this._resetView(center, zoom, preserveMapOffset);
  
              return this;
          },
  
          panBy: function (offset, options) {
              offset = L.point(offset).round();
              options = options || {};
  
              if (!offset.x && !offset.y) {
                  return this;
              }
  
              if (!this._panAnim) {
                  this._panAnim = new L.PosAnimation();
  
                  this._panAnim.on({
                      'step': this._onPanTransitionStep,
                      'end': this._onPanTransitionEnd
                  }, this);
              }
  
              // don't fire movestart if animating inertia
              if (!options.noMoveStart) {
                  this.fire('movestart');
              }
  
              // animate pan unless animate: false specified
              if (options.animate !== false) {
                  L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
  
                  var newPos = this._getMapPanePos().subtract(offset);
                  this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
              } else {
                  this._rawPanBy(offset);
                  this.fire('move').fire('moveend');
              }
  
              return this;
          },
  
          _onPanTransitionStep: function () {
              this.fire('move');
          },
  
          _onPanTransitionEnd: function () {
              L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
              this.fire('moveend');
          },
  
          _tryAnimatedPan: function (center, options) {
              // difference between the new and current centers in pixels
              var offset = this._getCenterOffset(center)._floor();
  
              // don't animate too far unless animate: true specified in options
              if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
  
              this.panBy(offset, options);
  
              return true;
          }
      });
  
  
      /*
       * L.PosAnimation fallback implementation that powers Leaflet pan animations
       * in browsers that don't support CSS3 Transitions.
       */
  
      L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({
  
          run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
              this.stop();
  
              this._el = el;
              this._inProgress = true;
              this._duration = duration || 0.25;
              this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
  
              this._startPos = L.DomUtil.getPosition(el);
              this._offset = newPos.subtract(this._startPos);
              this._startTime = +new Date();
  
              this.fire('start');
  
              this._animate();
          },
  
          stop: function () {
              if (!this._inProgress) { return; }
  
              this._step();
              this._complete();
          },
  
          _animate: function () {
              // animation loop
              this._animId = L.Util.requestAnimFrame(this._animate, this);
              this._step();
          },
  
          _step: function () {
              var elapsed = (+new Date()) - this._startTime,
                  duration = this._duration * 1000;
  
              if (elapsed < duration) {
                  this._runFrame(this._easeOut(elapsed / duration));
              } else {
                  this._runFrame(1);
                  this._complete();
              }
          },
  
          _runFrame: function (progress) {
              var pos = this._startPos.add(this._offset.multiplyBy(progress));
              L.DomUtil.setPosition(this._el, pos);
  
              this.fire('step');
          },
  
          _complete: function () {
              L.Util.cancelAnimFrame(this._animId);
  
              this._inProgress = false;
              this.fire('end');
          },
  
          _easeOut: function (t) {
              return 1 - Math.pow(1 - t, this._easeOutPower);
          }
      });
  
  
      /*
       * Extends L.Map to handle zoom animations.
       */
  
      L.Map.mergeOptions({
          zoomAnimation: true,
          zoomAnimationThreshold: 4
      });
  
      if (L.DomUtil.TRANSITION) {
  
          L.Map.addInitHook(function () {
              // don't animate on browsers without hardware-accelerated transitions or old Android/Opera
              this._zoomAnimated = this.options.zoomAnimation && L.DomUtil.TRANSITION &&
                  L.Browser.any3d && !L.Browser.android23 && !L.Browser.mobileOpera;
  
              // zoom transitions run with the same duration for all layers, so if one of transitionend events
              // happens after starting zoom animation (propagating to the map pane), we know that it ended globally
              if (this._zoomAnimated) {
                  L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
              }
          });
      }
  
      L.Map.include(!L.DomUtil.TRANSITION ? {} : {
  
          _catchTransitionEnd: function (e) {
              if (this._animatingZoom && e.propertyName.indexOf('transform') >= 0) {
                  this._onZoomTransitionEnd();
              }
          },
  
          _nothingToAnimate: function () {
              return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
          },
  
          _tryAnimatedZoom: function (center, zoom, options) {
  
              if (this._animatingZoom) { return true; }
  
              options = options || {};
  
              // don't animate if disabled, not supported or zoom difference is too large
              if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
                  Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
  
              // offset is the pixel coords of the zoom origin relative to the current center
              var scale = this.getZoomScale(zoom),
                  offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale),
                  origin = this._getCenterLayerPoint()._add(offset);
  
              // don't animate if the zoom origin isn't within one screen from the current center, unless forced
              if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
  
              this
                  .fire('movestart')
                  .fire('zoomstart');
  
              this._animateZoom(center, zoom, origin, scale, null, true);
  
              return true;
          },
  
          _animateZoom: function (center, zoom, origin, scale, delta, backwards, forTouchZoom) {
  
              if (!forTouchZoom) {
                  this._animatingZoom = true;
              }
  
              // put transform transition on all layers with leaflet-zoom-animated class
              L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
  
              // remember what center/zoom to set after animation
              this._animateToCenter = center;
              this._animateToZoom = zoom;
  
              // disable any dragging during animation
              if (L.Draggable) {
                  L.Draggable._disabled = true;
              }
  
              L.Util.requestAnimFrame(function () {
                  this.fire('zoomanim', {
                      center: center,
                      zoom: zoom,
                      origin: origin,
                      scale: scale,
                      delta: delta,
                      backwards: backwards
                  });
              }, this);
          },
  
          _onZoomTransitionEnd: function () {
  
              this._animatingZoom = false;
  
              L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
  
              this._resetView(this._animateToCenter, this._animateToZoom, true, true);
  
              if (L.Draggable) {
                  L.Draggable._disabled = false;
              }
          }
      });
  
  
      /*
       Zoom animation logic for L.TileLayer.
       */
  
      L.TileLayer.include({
          _animateZoom: function (e) {
              if (!this._animating) {
                  this._animating = true;
                  this._prepareBgBuffer();
              }
  
              var bg = this._bgBuffer,
                  transform = L.DomUtil.TRANSFORM,
                  initialTransform = e.delta ? L.DomUtil.getTranslateString(e.delta) : bg.style[transform],
                  scaleStr = L.DomUtil.getScaleString(e.scale, e.origin);
  
              bg.style[transform] = e.backwards ?
                  scaleStr + ' ' + initialTransform :
                  initialTransform + ' ' + scaleStr;
          },
  
          _endZoomAnim: function () {
              var front = this._tileContainer,
                  bg = this._bgBuffer;
  
              front.style.visibility = '';
              front.parentNode.appendChild(front); // Bring to fore
  
              // force reflow
              L.Util.falseFn(bg.offsetWidth);
  
              this._animating = false;
          },
  
          _clearBgBuffer: function () {
              var map = this._map;
  
              if (map && !map._animatingZoom && !map.touchZoom._zooming) {
                  this._bgBuffer.innerHTML = '';
                  this._bgBuffer.style[L.DomUtil.TRANSFORM] = '';
              }
          },
  
          _prepareBgBuffer: function () {
  
              var front = this._tileContainer,
                  bg = this._bgBuffer;
  
              // if foreground layer doesn't have many tiles but bg layer does,
              // keep the existing bg layer and just zoom it some more
  
              var bgLoaded = this._getLoadedTilesPercentage(bg),
                  frontLoaded = this._getLoadedTilesPercentage(front);
  
              if (bg && bgLoaded > 0.5 && frontLoaded < 0.5) {
  
                  front.style.visibility = 'hidden';
                  this._stopLoadingImages(front);
                  return;
              }
  
              // prepare the buffer to become the front tile pane
              bg.style.visibility = 'hidden';
              bg.style[L.DomUtil.TRANSFORM] = '';
  
              // switch out the current layer to be the new bg layer (and vice-versa)
              this._tileContainer = bg;
              bg = this._bgBuffer = front;
  
              this._stopLoadingImages(bg);
  
              //prevent bg buffer from clearing right after zoom
              clearTimeout(this._clearBgBufferTimer);
          },
  
          _getLoadedTilesPercentage: function (container) {
              var tiles = container.getElementsByTagName('img'),
                  i, len, count = 0;
  
              for (i = 0, len = tiles.length; i < len; i++) {
                  if (tiles[i].complete) {
                      count++;
                  }
              }
              return count / len;
          },
  
          // stops loading all tiles in the background layer
          _stopLoadingImages: function (container) {
              var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')),
                  i, len, tile;
  
              for (i = 0, len = tiles.length; i < len; i++) {
                  tile = tiles[i];
  
                  if (!tile.complete) {
                      tile.onload = L.Util.falseFn;
                      tile.onerror = L.Util.falseFn;
                      tile.src = L.Util.emptyImageUrl;
  
                      tile.parentNode.removeChild(tile);
                  }
              }
          }
      });
  
  
      /*
       * Provides L.Map with convenient shortcuts for using browser geolocation features.
       */
  
      L.Map.include({
          _defaultLocateOptions: {
              watch: false,
              setView: false,
              maxZoom: Infinity,
              timeout: 10000,
              maximumAge: 0,
              enableHighAccuracy: false
          },
  
          locate: function (/*Object*/ options) {
  
              options = this._locateOptions = L.extend(this._defaultLocateOptions, options);
  
              if (!navigator.geolocation) {
                  this._handleGeolocationError({
                      code: 0,
                      message: 'Geolocation not supported.'
                  });
                  return this;
              }
  
              var onResponse = L.bind(this._handleGeolocationResponse, this),
                  onError = L.bind(this._handleGeolocationError, this);
  
              if (options.watch) {
                  this._locationWatchId =
                      navigator.geolocation.watchPosition(onResponse, onError, options);
              } else {
                  navigator.geolocation.getCurrentPosition(onResponse, onError, options);
              }
              return this;
          },
  
          stopLocate: function () {
              if (navigator.geolocation) {
                  navigator.geolocation.clearWatch(this._locationWatchId);
              }
              if (this._locateOptions) {
                  this._locateOptions.setView = false;
              }
              return this;
          },
  
          _handleGeolocationError: function (error) {
              var c = error.code,
                  message = error.message ||
                      (c === 1 ? 'permission denied' :
                          (c === 2 ? 'position unavailable' : 'timeout'));
  
              if (this._locateOptions.setView && !this._loaded) {
                  this.fitWorld();
              }
  
              this.fire('locationerror', {
                  code: c,
                  message: 'Geolocation error: ' + message + '.'
              });
          },
  
          _handleGeolocationResponse: function (pos) {
              var lat = pos.coords.latitude,
                  lng = pos.coords.longitude,
                  latlng = new L.LatLng(lat, lng),
  
                  latAccuracy = 180 * pos.coords.accuracy / 40075017,
                  lngAccuracy = latAccuracy / Math.cos(L.LatLng.DEG_TO_RAD * lat),
  
                  bounds = L.latLngBounds(
                      [lat - latAccuracy, lng - lngAccuracy],
                      [lat + latAccuracy, lng + lngAccuracy]),
  
                  options = this._locateOptions;
  
              if (options.setView) {
                  var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
                  this.setView(latlng, zoom);
              }
  
              var data = {
                  latlng: latlng,
                  bounds: bounds,
                  timestamp: pos.timestamp
              };
  
              for (var i in pos.coords) {
                  if (typeof pos.coords[i] === 'number') {
                      data[i] = pos.coords[i];
                  }
              }
  
              this.fire('locationfound', data);
          }
      });
  
  
  }(window, document));