function startmarquee(lh,speed,delay) {  
var p=false; 
var t; 
var o=document.getElementById("marqueebox");
o.innerHTML+=o.innerHTML;
o.style.marginTop=0; 
o.onmouseover=function(){p=true;}
o.onmouseout=function(){p=false;} 
function start(){ 
t=setInterval(scrolling,speed); 
if(!p) o.style.marginTop=parseInt(o.style.marginTop)-1+"px"; }
function scrolling(){
if(parseInt(o.style.marginTop)%lh!=0){ 
o.style.marginTop=parseInt(o.style.marginTop)-1+"px"; 
if(Math.abs(parseInt(o.style.marginTop))>=o.scrollHeight/2) o.style.marginTop=0; 
}else{ 
clearInterval(t); 
setTimeout(start,delay);}}
setTimeout(start,delay); }
startmarquee(120,2,4000); //滚动属性(滚动高度,速度,延迟)