text: // Sticky Plugin v1.0.4 for jQuery
  // =============
  // Author: Anthony Garand
  // Improvements by German M. Bravo (Kronuz) and Ruud Kamphuis (ruudk)
  // Improvements by Leonardo C. Daronco (daronco)
  // Created: 02/14/2011
  // Date: 07/20/2015
  // Website: http://stickyjs.com/
  // Description: Makes an element on the page stick on the screen as you scroll
  //              It will only set the 'top' and 'position' of your element, you
  //              might need to adjust the width in some cases.
  
  (function (factory) {
      if (typeof define === 'function' && define.amd) {
          // AMD. Register as an anonymous module.
          define(['jquery'], factory);
      } else if (typeof module === 'object' && module.exports) {
          // Node/CommonJS
          module.exports = factory(require('jquery'));
      } else {
          // Browser globals
          factory(jQuery);
      }
  }(function ($) {
      var slice = Array.prototype.slice; // save ref to original slice()
      var splice = Array.prototype.splice; // save ref to original slice()
  
    var defaults = {
        topSpacing: 0,
        bottomSpacing: 0,
        className: 'is-sticky',
        wrapperClassName: 'sticky-wrapper',
        center: false,
        getWidthFrom: '',
        widthFromWrapper: true, // works only when .getWidthFrom is empty
        responsiveWidth: false,
        zIndex: 'auto'
      },
      $window = $(window),
      $document = $(document),
      sticked = [],
      windowHeight = $window.height(),
      scroller = function() {
        var scrollTop = $window.scrollTop(),
          documentHeight = $document.height(),
          dwh = documentHeight - windowHeight,
          extra = (scrollTop > dwh) ? dwh - scrollTop : 0;
  
        for (var i = 0, l = sticked.length; i < l; i++) {
          var s = sticked[i],
            elementTop = s.stickyWrapper.offset().top,
            etse = elementTop - s.topSpacing - extra;
  
          //update height in case of dynamic content
          s.stickyWrapper.css('height', s.stickyElement.outerHeight());
  
          if (scrollTop <= etse) {
            if (s.currentTop !== null) {
              s.stickyElement
                .css({
                  'width': '',
                  'position': '',
                  'top': '',
                  'z-index': ''
                });
              s.stickyElement.parent().removeClass(s.className);
              s.stickyElement.trigger('sticky-end', [s]);
              s.currentTop = null;
            }
          }
          else {
            var newTop = documentHeight - s.stickyElement.outerHeight()
              - s.topSpacing - s.bottomSpacing - scrollTop - extra;
            if (newTop < 0) {
              newTop = newTop + s.topSpacing;
            } else {
              newTop = s.topSpacing;
            }
            if (s.currentTop !== newTop) {
              var newWidth;
              if (s.getWidthFrom) {
                  newWidth = $(s.getWidthFrom).width() || null;
              } else if (s.widthFromWrapper) {
                  newWidth = s.stickyWrapper.width();
              }
              if (newWidth == null) {
                  newWidth = s.stickyElement.width();
              }
              s.stickyElement
                .css('width', newWidth)
                .css('position', 'fixed')
                .css('top', newTop)
                .css('z-index', s.zIndex);
  
              s.stickyElement.parent().addClass(s.className);
  
              if (s.currentTop === null) {
                s.stickyElement.trigger('sticky-start', [s]);
              } else {
                // sticky is started but it have to be repositioned
                s.stickyElement.trigger('sticky-update', [s]);
              }
  
              if (s.currentTop === s.topSpacing && s.currentTop > newTop || s.currentTop === null && newTop < s.topSpacing) {
                // just reached bottom || just started to stick but bottom is already reached
                s.stickyElement.trigger('sticky-bottom-reached', [s]);
              } else if(s.currentTop !== null && newTop === s.topSpacing && s.currentTop < newTop) {
                // sticky is started && sticked at topSpacing && overflowing from top just finished
                s.stickyElement.trigger('sticky-bottom-unreached', [s]);
              }
  
              s.currentTop = newTop;
            }
  
            // Check if sticky has reached end of container and stop sticking
            var stickyWrapperContainer = s.stickyWrapper.parent();
            var unstick = (s.stickyElement.offset().top + s.stickyElement.outerHeight() >= stickyWrapperContainer.offset().top + stickyWrapperContainer.outerHeight()) && (s.stickyElement.offset().top <= s.topSpacing);
  
            if( unstick ) {
              s.stickyElement
                .css('position', 'absolute')
                .css('top', '')
                .css('bottom', 0)
                .css('z-index', '');
            } else {
              s.stickyElement
                .css('position', 'fixed')
                .css('top', newTop)
                .css('bottom', '')
                .css('z-index', s.zIndex);
            }
          }
        }
      },
      resizer = function() {
        windowHeight = $window.height();
  
        for (var i = 0, l = sticked.length; i < l; i++) {
          var s = sticked[i];
          var newWidth = null;
          if (s.getWidthFrom) {
              if (s.responsiveWidth) {
                  newWidth = $(s.getWidthFrom).width();
              }
          } else if(s.widthFromWrapper) {
              newWidth = s.stickyWrapper.width();
          }
          if (newWidth != null) {
              s.stickyElement.css('width', newWidth);
          }
        }
      },
      methods = {
        init: function(options) {
          return this.each(function() {
            var o = $.extend({}, defaults, options);
            var stickyElement = $(this);
  
            var stickyId = stickyElement.attr('id');
            var wrapperId = stickyId ? stickyId + '-' + defaults.wrapperClassName : defaults.wrapperClassName;
            var wrapper = $('<div></div>')
              .attr('id', wrapperId)
              .addClass(o.wrapperClassName);
  
            stickyElement.wrapAll(function() {
              if ($(this).parent("#" + wrapperId).length == 0) {
                      return wrapper;
              }
  });
  
            var stickyWrapper = stickyElement.parent();
  
            if (o.center) {
              stickyWrapper.css({width:stickyElement.outerWidth(),marginLeft:"auto",marginRight:"auto"});
            }
  
            if (stickyElement.css("float") === "right") {
              stickyElement.css({"float":"none"}).parent().css({"float":"right"});
            }
  
            o.stickyElement = stickyElement;
            o.stickyWrapper = stickyWrapper;
            o.currentTop    = null;
  
            sticked.push(o);
  
            methods.setWrapperHeight(this);
            methods.setupChangeListeners(this);
          });
        },
  
        setWrapperHeight: function(stickyElement) {
          var element = $(stickyElement);
          var stickyWrapper = element.parent();
          if (stickyWrapper) {
            stickyWrapper.css('height', element.outerHeight());
          }
        },
  
        setupChangeListeners: function(stickyElement) {
          if (window.MutationObserver) {
            var mutationObserver = new window.MutationObserver(function(mutations) {
              if (mutations[0].addedNodes.length || mutations[0].removedNodes.length) {
                methods.setWrapperHeight(stickyElement);
              }
            });
            mutationObserver.observe(stickyElement, {subtree: true, childList: true});
          } else {
            if (window.addEventListener) {
              stickyElement.addEventListener('DOMNodeInserted', function() {
                methods.setWrapperHeight(stickyElement);
              }, false);
              stickyElement.addEventListener('DOMNodeRemoved', function() {
                methods.setWrapperHeight(stickyElement);
              }, false);
            } else if (window.attachEvent) {
              stickyElement.attachEvent('onDOMNodeInserted', function() {
                methods.setWrapperHeight(stickyElement);
              });
              stickyElement.attachEvent('onDOMNodeRemoved', function() {
                methods.setWrapperHeight(stickyElement);
              });
            }
          }
        },
        update: scroller,
        unstick: function(options) {
          return this.each(function() {
            var that = this;
            var unstickyElement = $(that);
  
            var removeIdx = -1;
            var i = sticked.length;
            while (i-- > 0) {
              if (sticked[i].stickyElement.get(0) === that) {
                  splice.call(sticked,i,1);
                  removeIdx = i;
              }
            }
            if(removeIdx !== -1) {
              unstickyElement.unwrap();
              unstickyElement
                .css({
                  'width': '',
                  'position': '',
                  'top': '',
                  'float': '',
                  'z-index': ''
                })
              ;
            }
          });
        }
      };
  
    // should be more efficient than using $window.scroll(scroller) and $window.resize(resizer):
    if (window.addEventListener) {
      window.addEventListener('scroll', scroller, false);
      window.addEventListener('resize', resizer, false);
    } else if (window.attachEvent) {
      window.attachEvent('onscroll', scroller);
      window.attachEvent('onresize', resizer);
    }
  
    $.fn.sticky = function(method) {
      if (methods[method]) {
        return methods[method].apply(this, slice.call(arguments, 1));
      } else if (typeof method === 'object' || !method ) {
        return methods.init.apply( this, arguments );
      } else {
        $.error('Method ' + method + ' does not exist on jQuery.sticky');
      }
    };
  
    $.fn.unstick = function(method) {
      if (methods[method]) {
        return methods[method].apply(this, slice.call(arguments, 1));
      } else if (typeof method === 'object' || !method ) {
        return methods.unstick.apply( this, arguments );
      } else {
        $.error('Method ' + method + ' does not exist on jQuery.sticky');
      }
    };
    $(function() {
      setTimeout(scroller, 0);
    });
  }));
  