if(typeof Widget=="undefined")Widget={};Widget.Fader=Class.create();Widget.Fader.prototype={initialize:function(img,list,options){this.img=$(img);this.list=list;this.options=Object.extend({id:this.img.id,fadeInDuration:2.5,fadeOutDuration:1.5,displayDuration:2.5,autoSize:false,autoStart:true,attributes:{},dir:"",beforeFade:null,startIndex:0},options||{});this.options.attributes["id"]=this.options.id;this.index=this.options.startIndex;this.container=$(this.img.parentNode);this.loadedObserver=this.loaded.bind(this);this.fadeInObserver=this.fadeIn.bind(this);this.nextObserver=this.next.bind(this);if(this.options.autoStart){setTimeout(this.start.bind(this),this.options.displayDuration*1000);}},start:function(){this.stopped=false;this.next();},stop:function(){this.stopped=true;try{clearTimeout(this.timeout);}catch(ex){}
try{Effect.Queues.get(this.options.id).each(function(effect){effect.cancel()})}catch(ex){}
if(this.oldImg){this.img=this.oldImg;--this.index;}
Element.setOpacity(this.img,1);},next:function(){this.oldImg=this.img;if(this.stopped||this.list.length==0){return;}
++this.index;if(this.index>=this.list.length){this.index=0;}
this.img=new Element("img",this.options.attributes);Event.observe(this.img,"load",this.loadedObserver);this.img.src=this.options.dir+this.list[this.index];},loaded:function(){Event.stopObserving(this.img,"load",this.loadedObserver);if(typeof this.options.beforeFade=="function"){this.options.beforeFade(this.oldImg,false);}
new Effect.Opacity(this.oldImg,{duration:this.options.fadeOutDuration,from:1.0,to:0.0,queue:{scope:this.options.id}});this.timeout=setTimeout(this.fadeInObserver,this.options.fadeOutDuration*1000);},fadeIn:function(){if(typeof this.options.beforeFade=="function"){this.options.beforeFade(this.img,true);}
this.img.id=this.id;Element.setOpacity(this.img,0);if(this.options.autoSize){this.resize(this.img);}
this.container.replaceChild(this.img,this.oldImg);this.oldImg=null;new Effect.Opacity(this.img,{duration:this.options.fadeInDuration,from:0.0,to:1.0,queue:{scope:this.options.id}});this.timeout=setTimeout(this.nextObserver,(this.options.fadeInDuration+this.options.displayDuration)*1000);},resize:function(img){var dim=this.container.getDimensions();dim.width-=parseInt(this.container.getStyle("padding-left"))+
parseInt(this.container.getStyle("padding-right"))+
parseInt(this.container.getStyle("border-left-width"))+
parseInt(this.container.getStyle("border-right-width"));dim.height-=parseInt(this.container.getStyle("padding-top"))+
parseInt(this.container.getStyle("padding-bottom"))+
parseInt(this.container.getStyle("border-top-width"))+
parseInt(this.container.getStyle("border-bottom-width"));var dw=dim.width/img.width;var dh=dim.height/img.height;var w1=img.width*dh;var h1=img.height*dw;if(dw>dh){img.width=w1;img.height=dim.height;}else{img.width=dim.width;img.height=h1;}}};var Fader=Widget.Fader;