自己写的代码，运行一直没效果
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
#box{
margin: 0 auto;
width: 250px;
height: 100px;
border: 1px solid #000;
border-radius: 5px;
overflow: hidden;
}
ul{
margin: 0;
list-style: none;
}
ul li{
padding-top: 1px;
}
</style>
</head>
<body>
<div id="box">
<ul id="con1">
<li>1、第1条信息滚动</li>
<li>2、第2条信息滚动</li>
<li>3、第3条信息滚动</li>
<li>4、第4条信息滚动</li>
<li>5、第5条信息滚动</li>
<li>6、第6条信息滚动</li>
<li>7、第7条信息滚动</li>
<li>8、第8条信息滚动</li>
<li>9、第9条信息滚动</li>
</ul>
<ul id="con2"> </ul>
</div>
<script type="text/javascript">
var area=document.getElementById("box");
var con1=document.getElementById("con1");
var con2=document.getElementById("con2");
con2.innerHTML=con1.innerHTML;
area.scrollTop=0;
var time=50;
var myScroll;
//debugger
function scrollup(){
if(area.scrollTop>=con1.scrollHeight){
area.scrollTop=0;
}else{
area.scrollTop++;
}
}
window.onload=function(){
myScroll=setInterval('scrollup()',time);
}
area.onmouseover = function(){
clearInterval(myScroll);
}
area.onmouseout = function(){
myScroll = setInterval("scrollup()",time);
}
</script>
</body>
</html>
