<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery 渐变下来效果</title>
</head>
<body>
<div class="wrapper">
<ul class="fir">
<li class="dropdown">
<a class="rssfeed">下拉菜单测试</a>
<ul style="width:800px">
<li style="float:left;"><a href="#" class="xg" rel="nofollow">鲜果订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
<li style="float:left;"><a href="#" class="gr" rel="nofollow"> Google订阅</a></li>
</ul>
</li>
</ul>
</div>
<script language="javascript" type="text/javascript" src="jquery.min.js"></script>
<script language="javascript" type="text/javascript">
$(function(){
$(".fir .dropdown").hover(
function(){
$("li ul").slideToggle(800);
},function(){
$("li ul").slideUp(1000)
})
})
</script>
</body>
</html>
需要自己下载 juery.min.js
