function getid(obj)//取对应id的元素
		{
			return document.getElementById(obj);
		}

		function getNames(obj,name,tij)
		{	
			var plist = obj.getElementsByTagName(tij);
			var rlist = new Array();
			for(i=0;i<plist.length;i++)
			{
				if(plist[i].getAttribute("name") == name)
				{
					rlist[rlist.length] = plist[i];
				}
			}
			return rlist;
		}

		function fiterplay(obj,num,t,name,c1,c2)
		{
			var fitlist = getNames(obj,name,t);
			for(i=0;i<fitlist.length;i++)
			{
				if(i == num)
				{
					fitlist[i].className = c1;
				}
				else
				{
					fitlist[i].className = c2;
				}
			}
		}

		function play(obj,num)
		{
			var hot = getid("hot");
			var pic = getid("hotimg");
			var info = getid("info");
			var bot = getid("bot");
			try	
			{
				with(hot)
				{
					filters[0].Apply();	
					fiterplay(pic,num,"div","f","dis","undis");
					fiterplay(info,num,"div","f","dis","undis");
					fiterplay(bot,num,"td","f","s","");
					filters[0].play();
				}
			}
			catch(e)
			{

			}
		}

		var n = 0;
		function clearAuto() {clearInterval(autoStart);};
		function setAuto(){autoStart=setInterval("auto(n)", 4800)}
		function auto()
		{
			var x = getNames(getid("bot"),"f","td");
			n++;
			if(n>(x.length-1)){n=0;}
			play(x[n],n);
		} 

		function format()
		{
			var x = getNames(getid("bot"),"f","td");
			for(i=0;i<x.length;i++)
			{
				x[i].num =i;
				x[i].onclick= function(){play(this,this.num); }
			}
			setAuto()
		}