请教大神,我的这个怎么没滚动呢
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>无缝滚动</title>
<style type="text/css">
*{margin:0;padding:0;}
#odiv{width:300px;border:1px solid #000;background:#d8bfd8;}
h3{height:50px;line-height:50px;text-align: center;border:1px solid #000;color:white;}
#div1{overflow: hidden; height:150px;border:1px solid #000;}
ul{width:200px;margin:0 50px 0 50px;}
li{list-style: none;}
a{text-decoration: none;color:white;}
</style>
</head>
<body>
<script type="text/javascript">
window.onload=function(){
var area=document.getElementById('div1');
var con1=document.getElementById('con1');
var con2=document.getElementById('con2');
var speed=50;
con2.innerHTML=con1.innerHTML;
function scroll(){
if(area.scrollTop>=con1.scrollHeight)
{
area.scrollTop=0;
}
else{
area.scrollTop++;
}
}
var myscorll=setInterval("scroll()",speed);
}
</script>
<div id="odiv">
<h3>亚洲新歌榜实时趋势</h3>
<div id="div1">
<ul id="con1">
<li><a href="#" >1.玫瑰与小鹿----周深</a></li><br>
<li><a href="#" >2.蜉蝣----华晨宇</a></li><br>
<li><a href="#" >3.大梦想家----TFBOYS</a></li><br>
<li><a href="#" >4.Rims----欧豪</a></li><br>
<li><a href="#" >5.银河----汪苏泷</a></li><br>
<li><a href="#" >6.创作者----本兮</a></li><br>
<li><a href="#" >7.做你的Gentleman----张阳阳</a></li><br>
<li><a href="#" >7.做你的Gentleman----张阳阳</a></li><br>
<li><a href="#" >7.做你的Gentleman----张阳阳</a></li><br>
<li><a href="#" >7.做你的Gentleman----张阳阳</a></li><br>
<li><a href="#" >7.做你的Gentleman----张阳阳</a></li><br>
</ul>
<ul id="con2"></ul>
</div>
</div>
</body>
</html>