<div id=demo style=overflow:hidden;height:20;width:100>
<table align=left cellpadding=0 cellspace=0 border=0>
<tr>
<td id=demo1 valign=top>
<table border=0 cellpadding=0 cellspacing=4 width="100%">
<tr align=center valign=top>
在一个也面放两个滚动效果时出现了以上我说的情况,请问什么回事,望老师回答,谢谢了.
</tr>
</table></td>
<td id=demo2 valign=top></td>
</tr>
</table>
</div>

<script>
var speed=30
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
demo.scrollLeft-=demo1.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>