function Slideshow(slideshow,timeout){this.slides=[];var nl=$(slideshow).getElementsByTagName('div');for(var i=0;i<nl.length;i++){if(Element.hasClassName(nl[i],'slide')){this.slides.push(nl[i]);}}
this.timeout=timeout;this.current=0;for(var i=0;i<this.slides.length;i++){this.slides[i].style.zIndex=this.slides.length-i;this.slides[i].style.display='block';}
Element.show(slideshow);setTimeout((function(){this.next();}).bind(this),this.timeout+850);}
Slideshow.prototype={next:function(){for(var i=0;i<this.slides.length;i++){var slide=this.slides[(this.current+i)%this.slides.length];slide.style.zIndex=this.slides.length-i;}
Effect.Fade(this.slides[this.current],{afterFinish:function(effect){effect.element.style.zIndex=0;Element.show(effect.element);Element.setOpacity(effect.element,1);}});this.current=(this.current+1)%this.slides.length;setTimeout((function(){this.next();}).bind(this),this.timeout+850);}}