<html>
<head>
<style>
.scroll{
overflow:hidden;
width:100%;
}
.scrollout{
height:250px;
width:100%;
overflow:hidden;
cursor:pointer;
}
</style>
<script type="text/javascript" src="jquery.js"></script>
<script>
//无缝滚动
var rclone=$("#rscroll").html();//这里要用html而不能用clone,html()方法是获取html代码，你是要加长html代码，clone方法是要复制节点信息
$("#rscrollout").append(rclone);//其次，你滚动的内容长度要大于200+scrollTop的高度才能进行滚动
var lclone=$("#lscroll").html();
$("#lscrollout").append(lclone);
var speed=1;
var NY=window.setInterval(scroll2,100);
function scroll2(){
var scrollTop=$(".scrollout").scrollTop()+speed;
if(scrollTop==400){
scrollTop=0;
}
$(".scrollout").scrollTop(scrollTop);
}
$(".scrollout").hover(function(){clearInterval(NY)},function(){NY=setInterval(scroll2,100);});
</script>
</head>
<body>
<div class="scrollout" id="rscrollout">
<div id="rscroll" class="scroll" style="height:400px;">
<ul>
<li>1</li>
<li>11</li>
<li>111</li>
<li>1111</li>
<li>11111</li>
<li>111111</li>
<li>1111111</li>
<li>11111111</li>
<li>111111111</li>
<li>1111111111</li>
<li>11111111111</li>
<li>111111111111</li>
<li>1111111111111</li>
<li>11111111111111</li>
<li>111111111111111</li>
</ul>
</div>
</div>
</body>
</html>
原文：http://www.cnblogs.com/Nbge/p/6145546.html