var speed=30 
marquePic2.innerHTML=marquePic1.innerHTML 
function Marquee(){ 
if(demo4.scrollLeft>=marquePic1.scrollWidth){ 
demo4.scrollLeft=0 
}else{ 
demo4.scrollLeft++ 
}} 
var MyMar=setInterval(Marquee,speed) 
demo4.onmouseover=function() {clearInterval(MyMar)} 
demo4.onmouseout=function() {MyMar=setInterval(Marquee,speed)}