var speed=10
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)}