var speed=40;
demo2.innerHTML=demo1.innerHTML;
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)demo.scrollLeft-=demo1.offsetWidth
	else demo.scrollLeft++;
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)};
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)};