(function(factory){if(typeof define==="function"&&define.amd){define(["jquery"],factory)}else if(typeof module==="object"&&module.exports){module.exports=factory(require("jquery"))}else{factory(jQuery)}})(function($){var slice=Array.prototype.slice;var splice=Array.prototype.splice;var defaults={topSpacing:0,bottomSpacing:0,className:"is-sticky",wrapperClassName:"sticky-wrapper",center:false,getWidthFrom:"",widthFromWrapper:true,responsiveWidth:false,zIndex:"inherit"},$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;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){padding=s.stickyElement.innerWidth()-s.stickyElement.width();newWidth=$(s.getWidthFrom).width()-padding||null}else if(s.widthFromWrapper){newWidth=s.stickyWrapper.width()}if(newWidth==null){newWidth=s.stickyElement.width()}s.stickyElement.css("width",newWidth).css("position","fixed").css("top",newTop).css("z-index",s.zIndex);s.stickyElement.parent().addClass(s.className);if(s.currentTop===null){s.stickyElement.trigger("sticky-start",[s])}else{s.stickyElement.trigger("sticky-update",[s])}if(s.currentTop===s.topSpacing&&s.currentTop>newTop||s.currentTop===null&&newTop<s.topSpacing){s.stickyElement.trigger("sticky-bottom-reached",[s])}else if(s.currentTop!==null&&newTop===s.topSpacing&&s.currentTop<newTop){s.stickyElement.trigger("sticky-bottom-unreached",[s])}s.currentTop=newTop}var stickyWrapperContainer=s.stickyWrapper.parent();var unstick=s.stickyElement.offset().top+s.stickyElement.outerHeight()>=stickyWrapperContainer.offset().top+stickyWrapperContainer.outerHeight()&&s.stickyElement.offset().top<=s.topSpacing;if(unstick){s.stickyElement.css("position","absolute").css("top","").css("bottom",0).css("z-index","")}else{s.stickyElement.css("position","fixed").css("top",newTop).css("bottom","").css("z-index",s.zIndex)}}}},resizer=function(){windowHeight=$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=$(that);var removeIdx=-1;var i=sticked.length;while(i-- >0){if(sticked[i].stickyElement.get(0)===that){splice.call(sticked,i,1);removeIdx=i}}if(removeIdx!==-1){unstickyElement.unwrap();unstickyElement.css({width:"",position:"",top:"",float:"","z-index":""})}})}};if(window.addEventListener){window.addEventListener("scroll",scroller,false);window.addEventListener("resize",resizer,false)}else if(window.attachEvent){window.attachEvent("onscroll",scroller);window.attachEvent("onresize",resizer)}$.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)})});