腾讯体育轮换tab菜单

没什么技术含量，看到了只想用源生的js来实现一下。

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<html>
<head>
<meta charset="utf-8"/>
<title>腾讯体育轮换tab菜单 - 豪情</title>
<style type="text/css">
*{margin: 0;padding: 0;}
body{font:12px/1.5 arial;background: #141e38;}
ul,li{list-style: none;}
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a{color: #fff;text-decoration: none;}
a:hover{color: #ff0;}
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.title{height: 33px;line-height: 28px;overflow: hidden;}
.nav a{float: left;font-size: 14px;font-weight: bold;height: 28px; 87px;text-align: center;margin-right: 5px;display: inline;background: #333131;color: #fff;}
.nav a.on{height: 33px;color: #ABD4FF;background: url(//images0.cnblogs.com/blog/100150/201304/07233652-68f62c0b28e2476b90520b72044f7a26.gif) 0 0 no-repeat;}
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.list li{float: left; 145px;margin: 0 10px 10px 0;text-align: center;display: inline;color: #fff;}
</style>
</head>
<body>
<section class="demo">
<div class="title">
<nav id="nav" class="nav clearfix">
<a class="on" href="javascript:void(0)">美图速递</a>
<a href="javascript:void(0)">经典回眸</a>
</nav>
</div>
<div id="content" class="content">
<ul class="list">
<li><a target="_blank" href="#"><img alt="卡戴珊孕期着装PK王妃" src="http://img1.gtimg.com/sports/pics/hv1/48/120/1298/84433098.jpg" /><br />
卡戴珊孕期着装PK王妃</a></li>
<li><a target="_blank" href="#"><img alt="阿Sa跳水真人秀亮相" src="http://img1.gtimg.com/sports/pics/hv1/49/120/1298/84433099.jpg" /><br />
阿Sa跳水真人秀亮相</a></li>
<li><a target="_blank" href="#"><img alt="车侑蓝亮相台球展卖萌" src="http://img1.gtimg.com/sports/pics/hv1/51/120/1298/84433101.jpg" /><br />
车侑蓝亮相台球展卖萌</a></li>
<li><a target="_blank" href="#"><img alt="UFC女郎变美国啦啦队长" src="http://img1.gtimg.com/sports/pics/hv1/54/120/1298/84433104.jpg" /><br />
UFC女郎变美国啦啦队长</a></li>
<li><a target="_blank" href="#"><img src="http://img1.gtimg.com/sports/pics/hv1/124/67/1297/84354634.jpg" alt="" /><br />
200J肥男减肥后逆袭女神</a></li>
<li><a target="_blank" href="#" rel="nofollow"><img title="" src="http://img1.gtimg.com/sports/pics/hv1/98/214/1277/83091593.jpg" alt="" /><br />巧祛狐臭，远离尴尬(图)</a></li>
</ul>
<ul class="list none">
<li><a target="_blank" href="#"><img alt="王心凌为棒球赛开球" src="http://img1.gtimg.com/sports/pics/hv1/198/23/1298/84408513.jpg" /><br />
王心凌为棒球赛开球</a></li>
<li><a target="_blank" href="#"><img alt="威廉王子夫妇秀球技" src="http://img1.gtimg.com/sports/pics/hv1/199/23/1298/84408514.jpg" /><br />
威廉王子夫妇秀球技</a></li>
<li><a target="_blank" href="#"><img alt="美女健身教练秀身姿" src="http://img1.gtimg.com/sports/pics/hv1/200/23/1298/84408515.jpg" /><br />
美女健身教练秀身姿</a></li>
<li><a target="_blank" href="#"><img alt="NBA悍将与女友出街" src="http://img1.gtimg.com/sports/pics/hv1/201/23/1298/84408516.jpg" /><br />
NBA悍将与女友出街</a></li>
<li><a target="_blank" href="#"><img alt="莫布里环保活动左拥右抱" src="http://img1.gtimg.com/sports/pics/hv1/50/120/1298/84433100.jpg" /><br />
莫布里环保活动左拥右抱</a></li>
<li><a target="_blank" href="#" rel="nofollow"><img src="http://img1.gtimg.com/sports/pics/hv1/217/192/1173/76323502.jpg" alt="" /><br />喝酒“千杯不醉”有秘诀</a></li>
</ul>
</div>
</section>
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