/*!
jQuery Waypoints - v1.1
Copyright (c) 2011 Caleb Troughton
Dual licensed under the MIT license and GPL license.
https://github.com/imakewebthings/jquery-waypoints/blob/master/MIT-license.txt
https://github.com/imakewebthings/jquery-waypoints/blob/master/GPL-license.txt
*/
(function($,wp,wps,window,undefined){var $w=$(window),eventName="waypoint.reached",triggerWaypoint=function(way,dir){way.element.trigger(eventName,dir);if(way.options.triggerOnce){way.element[wp]("destroy")}},waypointIndex=function(el,context){var i=context.waypoints.length-1;while(i>=0&&context.waypoints[i].element[0]!==el[0]){i-=1}return i},contexts=[],Context=function(context){$.extend(this,{element:$(context),oldScroll:-99999,waypoints:[],didScroll:false,didResize:false,doScroll:$.proxy(function(){var newScroll=this.element.scrollTop(),isDown=newScroll>this.oldScroll,that=this,pointsHit=$.grep(this.waypoints,function(el,i){return isDown?(el.offset>that.oldScroll&&el.offset<=newScroll):(el.offset<=that.oldScroll&&el.offset>newScroll)}),len=pointsHit.length;if(!this.oldScroll||!newScroll){$[wps]("refresh")}this.oldScroll=newScroll;if(!len){return}if(!isDown){pointsHit.reverse()}$.each(pointsHit,function(i,point){if(point.options.continuous||i===len-1){triggerWaypoint(point,[isDown?"down":"up"])}})},this)});$(context).scroll($.proxy(function(){if(!this.didScroll){this.didScroll=true;window.setTimeout($.proxy(function(){this.doScroll();this.didScroll=false},this),$[wps].settings.scrollThrottle)}},this)).resize($.proxy(function(){if(!this.didResize){this.didResize=true;window.setTimeout($.proxy(function(){$[wps]("refresh");this.didResize=false},this),$[wps].settings.resizeThrottle)}},this));$w.load($.proxy(function(){this.doScroll()},this))},getContextByElement=function(element){var found=null;$.each(contexts,function(i,c){if(c.element[0]===element){found=c;return false}});return found},methods={init:function(f,options){this.each(function(){var cElement=$.fn[wp].defaults.context,context,$this=$(this);if(options&&options.context){cElement=options.context}if(!$.isWindow(cElement)){cElement=$this.closest(cElement)[0]}context=getContextByElement(cElement);if(!context){context=new Context(cElement);contexts.push(context)}var ndx=waypointIndex($this,context),base=ndx<0?$.fn[wp].defaults:context.waypoints[ndx].options,opts=$.extend({},base,options);opts.offset=opts.offset==="bottom-in-view"?function(){var cHeight=$.isWindow(cElement)?$[wps]("viewportHeight"):$(cElement).height();return cHeight-$(this).outerHeight()}:opts.offset;if(ndx<0){context.waypoints.push({element:$this,offset:$this.offset().top,options:opts})}else{context.waypoints[ndx].options=opts}if(f){$this.bind(eventName,f)}});$[wps]("refresh");return this},remove:function(){return this.each(function(i,el){var $el=$(el);$.each(contexts,function(i,c){var ndx=waypointIndex($el,c);if(ndx>=0){c.waypoints.splice(ndx,1)}})})},destroy:function(){return this.unbind(eventName)[wp]("remove")}},jQMethods={refresh:function(){$.each(contexts,function(i,c){var isWin=$.isWindow(c.element[0]),contextOffset=isWin?0:c.element.offset().top,contextHeight=isWin?$[wps]("viewportHeight"):c.element.height(),contextScroll=isWin?0:c.element.scrollTop();$.each(c.waypoints,function(j,o){var adjustment=o.options.offset,oldOffset=o.offset;if(typeof o.options.offset==="function"){adjustment=o.options.offset.apply(o.element)}else{if(typeof o.options.offset==="string"){var amount=parseFloat(o.options.offset);adjustment=o.options.offset.indexOf("%")?Math.ceil(contextHeight*(amount/100)):amount}}o.offset=o.element.offset().top-contextOffset+contextScroll-adjustment;if(c.oldScroll>oldOffset&&c.oldScroll<=o.offset){triggerWaypoint(o,["up"])}else{if(c.oldScroll<oldOffset&&c.oldScroll>=o.offset){triggerWaypoint(o,["down"])}}});c.waypoints.sort(function(a,b){return a.offset-b.offset})})},viewportHeight:function(){return(window.innerHeight?window.innerHeight:$w.height())},aggregate:function(){var points=$();$.each(contexts,function(i,c){$.each(c.waypoints,function(i,e){points=points.add(e.element)})});return points}};$.fn[wp]=function(method){if(methods[method]){return methods[method].apply(this,Array.prototype.slice.call(arguments,1))}else{if(typeof method==="function"||!method){return methods.init.apply(this,arguments)}else{if(typeof method==="object"){return methods.init.apply(this,[null,method])}else{$.error("Method "+method+" does not exist on jQuery "+wp)}}}};$.fn[wp].defaults={continuous:true,offset:0,triggerOnce:false,context:window};$[wps]=function(method){if(jQMethods[method]){return jQMethods[method].apply(this)}else{return jQMethods.aggregate()}};$[wps].settings={resizeThrottle:200,scrollThrottle:100};$w.load(function(){$[wps]("refresh")})})(jQuery,"waypoint","waypoints",this);