var speed=200;
document.getElementById("demo2").innerHTML=document.getElementById("demo1").innerHTML;
function Marquee(){
if(document.getElementById("demo2").offsetHeight-document.getElementById("demo").scrollTop<=0)
document.getElementById("demo").scrollTop-=document.getElementById("demo1").offsetHeight;
else{
document.getElementById("demo").scrollTop++;
}
}
var MyMar=setInterval(Marquee,speed);
document.getElementById("demo").onmouseover=function() {clearInterval(MyMar);}
document.getElementById("demo").onmouseout=function() {MyMar=setInterval(Marquee,speed);}