function GetByID(id){return document.getElementById(id);}
function totop(demo,demo1,demo2,speed,flag)
{
demo=GetByID(demo);
demo1=GetByID(demo1);
demo2=GetByID(demo2);
demo2.innerHTML=demo1.innerHTML;
function Marquee()
{
if(demo2.offsetTop-demo.scrollTop<=0)
{
demo.scrollTop-=demo1.offsetHeight;
}else
{
demo.scrollTop++;
}
}
flag=setInterval(Marquee,speed)
demo.onmouseover=function ()
{
clearInterval(flag);
}
demo.onmouseout=function ()
{
flag=setInterval(Marquee,speed)
}
}
totop("demoxu","demoxu1","demoxu2",90,"demoxu111");