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js向上滚动文字问题的解决


<div id=demo style="overflow:hidden; width:128px; height:300px;">
<div id=demo1>
<br/>

<br/>

<br/>

<br/>

<br/>

<br/>


</div>
<div id=demo2></div>
</div>
<script language="javascript">
var speed=30
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetTop-demo.scrollTop<=0)
demo.scrollTop=0
else{
demo.scrollTop++
}
}
var MyMar=setInterval(Marquee,speed)
demo.οnmοuseοver=function() {clearInterval(MyMar)}
demo.οnmοuseοut=function() {MyMar=setInterval(Marquee,speed)}
</script>

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