function jqueryss(id){return document.getelementbyid(id);}
	window.onload=function(){
			
		var odiv = jqueryss("roll2");
		var oul = odiv.getelementsbytagname("ul")[0];
		var oli = oul.getelementsbytagname("li");
		var obtnl=jqueryss("button1");
		var obtnr=jqueryss("button2");
		var timer = null;
		var ispeed=-1;
		oul.innerhtml+=oul.innerhtml;	
		oul.style.width=(oli[0].offsetwidth+5)*oli.length+"px";
		timer=setinterval(function(){
			oul.style.left=oul.offsetleft+ispeed+"px";
			if(oul.offsetleft<-oul.offsetwidth/2){
				oul.style.left="0px";
			} 
			else if(oul.offsetleft >0){
				oul.style.left=-oul.offsetwidth/2+"px";
			};
		},30);
		obtnl.onmouseover=function(){	ispeed=-1;}
		obtnr.onmouseover=function(){	ispeed=1;}
		};