totop("demo","demo1","demo2",40,"hehe1sdf12weq3")
function $(id)
{
return document.getElementById(id)
}
//向上滚动函数，demo包含demo1与demo2,speed是滚动速度，flag一个网页内有多个时设置为不同的任意字符。
//by 柳永法(yongfa365)'Blog　www.yongfa365.com
function totop(demo,demo1,demo2,speed,flag)
{
demo=$(demo);
demo1=$(demo1);
demo2=$(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);
}
}