function SetupRotatingBanner(base, banner, transition, pause, frame){
	if(transition==null){transition=1;}
	if(pause==null){pause=5;}
	if(frame==null){frame=20;}
	
	if(typeof(base)=="string"){base=document.getElementById(base);}
	if(typeof(banner)=="string"){banner=document.getElementById(banner);}
	
	base.FrameLength=frame;
	
	base.Directions={In:1, Out:-1}
	base.Direction=base.Directions.Out;
	
	base.TransitionLength=transition;
	base.PauseLength=pause;
	
	base.Banner=banner;
	
	base.Alpha=1;
	base.Timer=new Date();
	base.Timeout=null;

	base.Playing=false;
	base.Paused=true;

	base.GetMoveBannerIndex=function(dir){
		var current=this.CurrentBanner;
		if(this.BannerToShow!=-1){current=this.BannerToShow;}
		var move=current+dir;

		if(move>this.Banners.length-1){move=0;}
		else if(move<0){move=this.Banners.length-1;}
		
		return move;
	}
	
	base.Banners=new Array();
	base.CurrentBanner=0;
	base.BannerToShow=-1;
	base.OnAddBanner=function(){}
	base.AddBanner=function(src, title, url, target){
		var newBanner=new Banner(src, title, url, target);
		this.OnAddBanner(this.Banners.length, newBanner);
		this.Banners.push(newBanner);
	}
	base.GetCurrentBanner=function(){
		return this.Banners[this.CurrentBanner];
	}
	base.OnChangeBanner=function(){}
	base.NextBanner=function(){
		var str=this.BannerToShow;
		
		if(this.BannerToShow==-1){			
			this.CurrentBanner=this.GetMoveBannerIndex(1);
		}
		else{
			this.CurrentBanner=this.BannerToShow;
			this.BannerToShow=-1;
		}

		str+=" "+this.BannerToShow;
		
		this.ChangeBanner();
	}
	base.ChangeBanner=function(){
		this.OnChangeBanner(this.CurrentBanner, this.GetCurrentBanner());
		this.ApplyCurrentBanner();
	}
	base.SetBanner=function(index){
		this.BannerToShow=index;
		clearTimeout(this.Timeout);
		this.Update(true);
		this.OnChangeBanner(index, this.Banners[index]);
	}
	base.MoveBanner=function(dir){
		var newIndex=this.GetMoveBannerIndex(dir);
		this.SetBanner(newIndex);
	}
	base.ApplyCurrentBanner=function(){
		var current=this.GetCurrentBanner();
		this.Banner.style.backgroundImage="url("+current.Src+")";
		this.Banner.href=current.Url;
		this.Banner.title=current.Title;
		this.Banner.target=current.Target;
	}
	
	base.Start=function(index){
		if(index!=null){this.CurrentBanner=index;}
		
		this.Playing=true;
		
		this.ApplyCurrentBanner();
		
		this.Timer=new Date();
		this.OnChangeBanner(this.CurrentBanner);
		this.Timeout=setTimeout("document.getElementById(\""+this.id+"\").Update(true)", this.PauseLength*1000);
	}
	base.Update=function(fromPause){
		if(fromPause==true){
			this.Timer=new Date();
		}

		this.Paused=false;
		
		var pause=false;
		
		var newTimer=new Date();
		var ofSec=(newTimer-this.Timer)/1000;
		var diff=ofSec/this.TransitionLength;
		var newAlpha=this.Alpha+(diff*this.Direction);
		if(newAlpha<=0){
			this.Direction=1;
			this.NextBanner();
			newAlpha=0;
		}
		if(newAlpha>1){
			this.Direction=-1;
			newAlpha=1;
			pause=true;
		}
		this.Alpha=newAlpha;

		this.Banner.style.opacity=this.Alpha;
		this.Banner.style.filter="alpha(opacity="+(this.Alpha*100)+")";
		
		this.Timer=newTimer;
		if((this.BannerToShow == -1) && (pause)){
			if(this.Playing){
				clearTimeout(this.Timeout);
				this.Timeout=setTimeout("document.getElementById(\""+this.id+"\").Update(true)", this.PauseLength*1000);
			}
			this.Paused=true;
		}
		else{
			clearTimeout(this.Timeout);
			this.Timeout=setTimeout("document.getElementById(\""+this.id+"\").Update()", this.FrameLength);
		}
	}
	base.Pause=function(){
		this.Playing=false;
		if(this.Paused){clearTimeout(this.Timeout);}
	}
	base.Resume=function(){
		this.Playing=true;
		this.Timer=new Date();
		this.Update(true);
	}

	return base;
}

function Banner(src, title, url, target){
	var temp=new Image();
	temp.src=src;
	
	this.Src=src;
	this.Title=title;
	this.Url=url;
	this.Target=target;
}