var Mar = document.getElementById("Marquee"); 
var child_div=Mar.getElementsByTagName("div") 
var picH = 385;//移动高度 
var scrollstep=5;//移动步幅,越大越快 
var scrolltime=10;//移动频度(毫秒)越大越慢 
var stoptime=3000;//间断时间(毫秒) 
var tmpH = 0; 
Mar.innerHTML += Mar.innerHTML; 
function start(){ 
if(tmpH < picH){ 
tmpH += scrollstep; 
if(tmpH > picH )tmpH = picH ; 
Mar.scrollTop = tmpH; 
setTimeout(start,scrolltime); 
}else{ 
tmpH = 0; 
Mar.appendChild(child_div[0]); 
Mar.scrollTop = 0; 
setTimeout(start,stoptime); 
} 
} 
onload=function(){setTimeout(start,stoptime)};