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<head>
<meta charset="utf-8"/>
<style type="text/css">
*{margin:0;padding:0;border:0}
#main{width:300px;height:300px;background-color:green}
#head{height:50px;background-color:red}
#head li{float:left;list-style:none;height:50px;width:72px;text-align:center;line-height:50px;background-color:orange;margin-right:3px}
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<div id="main">
<div id="head">
<ul>
<li id="tab1" onclick="show(1)" style="background-color:green">新闻</li>
<li id="tab2" onclick="show(2)">体育</li>
<li id="tab3" onclick="show(3)">音乐</li>
<li id="tab4" onclick="show(4)">娱乐</li>
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</div>
<div id="content">
<p id="p1">今天习总书记去乌干达访问了</p>
<p id="p2" style="display:none">乔丹改打乒乓球了</p>
<p id="p3" style="display:none">江南style</p>
<p id="p4" style="display:none">赵本山退出春晚</p>
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</div>
</body>
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