(function($) {var defaults = {topSpacing: 0,bottomSpacing: 0,className: 'is-sticky',wrapperClassName: 'sticky-wrapper',center: false,getWidthFrom: ''},$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; i < sticked.length; i++) {var s = sticked[i],elementTop = s.stickyWrapper.offset().top,etse = elementTop - s.topSpacing - extra;if (scrollTop <= etse) {if (s.currentTop !== null) {s.stickyElement.css('position', '').css('top', '');s.stickyElement.parent().removeClass(s.className);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) {s.stickyElement.css('position', 'fixed').css('top', newTop);if (typeof s.getWidthFrom !== 'undefined') {s.stickyElement.css('width', $(s.getWidthFrom).width());}s.stickyElement.parent().addClass(s.className);s.currentTop = newTop;}}}},resizer = function() {windowHeight = $window.height();},methods = {init: function(options) {var o = $.extend(defaults, options);return this.each(function() {var stickyElement = $(this);var stickyId = stickyElement.attr('id');var wrapper = $('<div></div>').attr('id', stickyId + '-sticky-wrapper').addClass(o.wrapperClassName);stickyElement.wrapAll(wrapper);if (o.center) {stickyElement.parent().css({width:stickyElement.outerWidth(),marginLeft:"auto",marginRight:"auto"});}if (stickyElement.css("float") == "right") {stickyElement.css({"float":"none"}).parent().css({"float":"right"});}var stickyWrapper = stickyElement.parent();stickyWrapper.css('height', stickyElement.outerHeight());sticked.push({topSpacing: o.topSpacing,bottomSpacing: o.bottomSpacing,stickyElement: stickyElement,currentTop: null,stickyWrapper: stickyWrapper,className: o.className,getWidthFrom: o.getWidthFrom});});},update: scroller};if (window.addEventListener) {window.addEventListener('scroll', scroller, false);window.addEventListener('resize', resizer, false);} else if (window.attachEvent) {window.attachEvent('onscroll', scroller);window.attachEvent('onresize', resizer);}$.fn.sticky = function(method) {if (methods[method]) {return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));} else if (typeof method === 'object' || !method ) {return methods.init.apply( this, arguments );} else {$.error('Method ' + method + ' does not exist on jQuery.sticky');}};$(function() {setTimeout(scroller, 0);});})(jQuery);