Element.display=function(element,show){Element[(show)?'show':'hide'](element);}
var CarouselItem=Class.create();CarouselItem.prototype={initialize:function(){this.key=null;this.value=null;this.element=null;}};var Carousel=Class.create();Carousel.prototype={initialize:function(key,carouselElement,itemWidth,itemHeight,observer,options){this.loaded=false;this.key=key;this.observer=observer;this.carouselElement=$(carouselElement);if(!this.carouselElement){alert('Warning: Invalid carousel element: '+carouselElement);return;}
this.itemsElement=this.carouselElement.down('.items');if(!this.itemsElement){alert('Warning: Class \'items\' does not exist as a child element in carousel: '+carouselElement);return;}
this.items=[];this.activeItem=null;this.activeIndex=0;this.navScrollIndex=0;this.itemHeight=itemHeight;this.itemWidth=itemWidth;if(!options)options={};this.options=Object.extend({duration:1.0,direction:'horizontal',moveOpacity:.6,setSize:4,allowAutoLoopOnSet:false,allowAutoLoopOnIndividual:true},options);this.backElement=this.carouselElement.down('.navButton.previous');this.forwardElement=this.carouselElement.down('.navButton.next');if(this.backElement)Event.observe(this.backElement,'click',this.scrollBack.bind(this));if(this.forwardElement)Event.observe(this.forwardElement,'click',this.scrollForward.bind(this));},load:function(){var eList=this.itemsElement;this.items.clear();eList.select('.item').each(function(item){item.carouselKey=null;var sKey='';try{sKey=item.down('.key').innerHTML;}catch(e){alert('Warning: Carousel Items require a child with classname [key]');return;}
var oCarouselItem=new CarouselItem();if(this.options.itemParser)oCarouselItem.value=this.options.itemParser(item);oCarouselItem.index=this.items.length;oCarouselItem.key=sKey;oCarouselItem.element=item;this.items.push(oCarouselItem);if(item.hasClassName('selected')){this.activeItem=oCarouselItem;this.activeIndex=this.items.size()-1;}
if(this.options.setItemEvents)this.options.setItemEvents(this,item,oCarouselItem,this.observer);}.bind(this));this.loaded=true;this.afterLoad();},destroy:function(){this.loaded=false;var eList=this.itemsElement;this.items.clear();if(this.options.unsetItemEvents){eList.select('.item').each(function(item,ix){this.options.unsetItemEvents(this,item,this.items[ix],this.observer);}.bind(this));}},afterLoad:function(){if(this.items.length==0){alert('Warning: No Carousel Items Exist');return;}
this.moveToIndex(this.activeIndex);if(this.activeItem)this.activate(this.activeItem);if(this.observer.fireActiveCarouselLoaded)this.observer.fireActiveCarouselLoaded(this);},scrollForward:function(){var iIndex=0;if(this.navScrollIndex>this.items.length-(this.options.setSize+1)){if(!this.options.allowAutoLoopOnSet)return;}else{iIndex=this.navScrollIndex+(this.options.setSize);}
this.scrollToIndex(iIndex);},scrollBack:function(){var iIndex=this.navScrollIndex-(this.options.setSize);if(iIndex<0){if(!this.options.allowAutoLoopOnSet){iIndex=0;}else{iIndex=this.items.length-this.options.setSize;if(this.navScrollIndex>0||iIndex<0)iIndex=0;}}
this.scrollToIndex(iIndex);},getLeft:function(index){return index*(-this.itemWidth);},getTop:function(index){return index*(-this.itemHeight);},activate:function(carouselItem){if(this.activeItem)this.observer.fireDeactiveCarouselItem(this,this.activeItem.element,this.activeItem);if(carouselItem==null)return;this.activeItem=carouselItem;if(this.observer.fireActiveCarouselItem)this.observer.fireActiveCarouselItem(this,carouselItem.element,carouselItem);},reactivate:function(){if(!this.activeItem)return;this.activate(this.activeItem);},next:function(){if(this.activeItem==null){this.activate(this.items[0]);return;}
var iIndex=this.activeItem.index+1;if(iIndex>=this.items.length){iIndex=0;if(!this.options.allowAutoLoopOnIndividual)iIndex=this.items.length-1;}
this.activate(this.items[iIndex]);this.activeIndex=iIndex;if(iIndex==0){this.scrollToIndex(0);return;}
if(iIndex-this.options.setSize>=this.navScrollIndex-1)this.scrollForward();},previous:function(){if(this.activeItem==null){this.activate(this.items[0]);return;}
var iIndex=this.activeItem.index-1;if(iIndex<0){if(this.options.allowAutoLoopOnIndividual){iIndex=this.items.length-1;}else{iIndex=0;}}
this.activate(this.items[iIndex]);this.activeIndex=iIndex;if(iIndex==0){this.scrollToIndex(0);return;}
if(iIndex==this.items.length-1){var iNavIndex=this.items.length-this.options.setSize;if(iNavIndex<0)iNavIndex=0;this.scrollToIndex(iNavIndex);return;}
if(iIndex<this.navScrollIndex+1)this.scrollBack();},scrollToIndex:function(index,duration){if(index<0)index=this.activeIndex;duration=duration||this.options.duration;if(this.options.direction=='vertical'){var iPreviousTop=this.getTop(this.navScrollIndex);var iTop=this.getTop(index);var iCurrentTop=parseInt(Element.getStyle(this.itemsElement,'top'))||0;var offset=iPreviousTop-iCurrentTop;var move=iTop-iPreviousTop;if(move>0){move=move+offset;}else{move=move-offset;}
Element.setOpacity(this.itemsElement,this.options.moveOpacity);var ef=new Effect.Move(this.itemsElement,{'duration':duration,'y':move,'afterFinish':function(){Element.setStyle(this.itemsElement,{'top':iTop+'px'});Element.setOpacity(this.itemsElement,1.0);}.bind(this)});ef=null;}else{var iPreviousLeft=this.getLeft(this.navScrollIndex);var iLeft=this.getLeft(index);var iCurrentLeft=parseInt(Element.getStyle(this.itemsElement,'left'))||0;var offset=iPreviousLeft-iCurrentLeft;var move=iLeft-iCurrentLeft;if(move>0){move=move+offset;}else{move=move-offset;}
Element.setOpacity(this.itemsElement,this.options.moveOpacity);var ef=new Effect.Move(this.itemsElement,{'duration':duration,'x':move,'afterFinish':function(){Element.setStyle(this.itemsElement,{'left':iLeft+'px'});Element.setOpacity(this.itemsElement,1.0);}.bind(this)});ef=null;}
this.navScrollIndex=index;Element.display(this.forwardElement,this.navScrollIndex<=this.items.length-(this.options.setSize+1)||this.options.allowAutoLoopOnSet);Element.display(this.backElement,(parseInt(this.navScrollIndex)||0)!=0||this.options.allowAutoLoopOnSet);if(this.observer.fireCarouselAtIndex)this.observer.fireCarouselAtIndex(this,index);},moveToIndex:function(index){if(this.options.direction=='vertical'){var iTop=this.getTop(index);Element.setStyle(this.itemsElement,{'top':iTop+'px'});Element.setOpacity(this.itemsElement,1.0);}else{var iLeft=this.getLeft(index);Element.setStyle(this.itemsElement,{'left':iLeft+'px'});Element.setOpacity(this.itemsElement,1.0);}
this.navScrollIndex=index;Element.display(this.forwardElement,this.navScrollIndex<=this.items.length-(this.options.setSize+1)||this.options.allowAutoLoopOnSet);Element.display(this.backElement,(parseInt(this.navScrollIndex)||0)!=0||this.options.allowAutoLoopOnSet);}};;var OS=Class.create();OS.PageLoading=true;OS.PageLoadComplete=function(){OS.PageLoading=false;$A(OS.BehaviourQueue).each(function(selectors){OS.ApplyBehaviour(selectors);});OS.BehaviourQueue=[];};Event.observe(document,'dom:loaded',function(){OS.PageLoadComplete();});OS.BehaviourQueue=[];OS.RegisterBehaviour=function(selectors){if(!OS.PageLoading){OS.ApplyBehaviour(selectors);return;}
OS.BehaviourQueue.push(selectors);}
OS.ApplyBehaviour=function(selectors){$H(selectors).each(function(item){var sKey=item.key;var iDelay=0;var iToken=sKey.indexOf("!D");if(iToken>0){iDelay=parseFloat(sKey.substring(iToken+2))||0;sKey=sKey.substring(0,iToken);iDelay=parseInt(iDelay);}
$$(sKey).each(function(element){if(!iDelay){item.value(element);return;}
item.value.delay(iDelay,element);});});};;var AppBehavior=Class.create();AppBehavior.Load=function(){OS.RegisterBehaviour(AppBehavior.CarouselRules);}
AppBehavior.CarouselRules={'#mega-manu-carousel':function(element){AppBehavior.PictureCarousel=new Carousel('PictureCarousel',element,151,115,AppBehavior,{setSize:4,duration:.5,direction:'horizontal',itemParser:function(item){},setItemEvents:function(carousel,itemElement,carouselItem,observer){Event.observe(itemElement,'click',function(){carousel.activate(carouselItem);});},allowAutoLoopOnSet:false,allowAutoLoopOnIndividual:false});AppBehavior.PictureCarousel.load();},'#mega-category-carousel':function(element){AppBehavior.PictureCarousel=new Carousel('PictureCarousel',element,151,115,AppBehavior,{setSize:4,duration:.5,direction:'horizontal',itemParser:function(item){},setItemEvents:function(carousel,itemElement,carouselItem,observer){Event.observe(itemElement,'click',function(){carousel.activate(carouselItem);});},allowAutoLoopOnSet:false,allowAutoLoopOnIndividual:false});AppBehavior.PictureCarousel.load();}}
AppBehavior.Load();