body{
 font:12px "Arial";
 text-align:center;
}
a:link
{
 font:12px "Arial";
 color:#00F;
 text-decoration:none;
 text-align:center;
 vertical-align:middle;
}
a:visited {
 color: #00F;
 text-decoration:none;
 font:12px "Arial";
}
a:hover {
 color: #c00;
 text-decoration:underline;
 font:12px "Arial";
}
ul{
 list-style:none;
}
.main{
 clear:both;
 padding:8px;
 text-align:center;
}
/*第一种形式*/
#tabs0 {
 height: 200px;
 width: 400px;
 border: 1px solid #cbcbcb;
 background-color: #f2f6fb;
}
.menu0{
 width: 400px;
}
.menu0 li{
 display:block;
 float: left;
 padding: 4px 0;
 width:100px;
 text-align: center;
 cursor:pointer;
 background: #FFFFff;
}
.menu0 li.hover{
 background: #f2f6fb;
}
#main0 ul{
 display: none;
}
#main0 ul.block{
 display: block;
}
/*第二种形式*/
#tabs1
{
 font-size:12px;
 text-align:left;
 width:100%;
 text-align:center;
 vertical-align:middle;
}
.menu1box{
 position:relative;
 overflow:hidden;
 height:22px;
 width:350px;
 font-size:12px;
 text-align:center;
 vertical-align:middle;
}
#menu1{
 position:absolute;
 top:0;
 left:0;
 z-index:1;
 font-size:12px;
 text-align:center;
 vertical-align:bottom;
}
#menu1 li{
 float:left;
 display:block;
 cursor:pointer;
 width:50px;
 text-align:center;
 vertical-align:bottom;
 font-size:12px;
 height:22px;
}
#menu1 li.hover{
 background:#fff;
 border-left:1px solid #333;
 border-top:1px solid #333;
 border-right:1px solid #333;
 font-size:12px;
 text-align:center;
 vertical-align:bottom;
}
.main1box{
 clear:both;
 margin-top:1px;
 border:1px solid #333;
 height:95%;
 width:100%;
 font-size:12px;
 text-align:center;
 vertical-align:middle;
}
#main1 ul{
 display: none;
 font-size:12px;
}
#main1 ul.block{
 display: block;
 font-size:12px;
}
/*第三种形式*/
.menu2box{
 position:relative;
 overflow:hidden;
 height:22px;
 width:400px;
 text-align:left;
 background: #FFFFff;
}
#tabs2 {
 height: 200px;
 width: 400px;
 border: 1px solid #cbcbcb;
 background-color: #f2f6fb;
}
#tip2{
 position:absolute;
 top:0;
 left:0;
 height:22px;
 line-height:22px;
 z-index:0;
 width:100px;
 background: #f2f6fb;
}
#menu2{
 position:absolute;
 top:0;
 left:0;
 z-index:1;
}
#menu2 li{
 display:block;
 float: left;
 padding: 4px 0;
 width:100px;
 text-align: center;
 cursor:pointer;
}

/*
<!--第一种形式-->
<div id="tabs0">
 <ul class="menu0" id="menu0">
 <li onclick="setTab(0,0)" class="hover">新闻</li>
 <li onclick="setTab(0,1)">评论</li>
 <li onclick="setTab(0,2)">技术</li>
 <li onclick="setTab(0,3)">点评</li>
 </ul>
 <div class="main" id="main0">
 <ul class="block"><li>新闻列表</li></ul>
 <ul><li>评论列表</li></ul>
 <ul><li>技术列表</li></ul>
 <ul><li>点评列表</li></ul>
 </div>
</div>
<br />
<br />
<!--第二种形式-->
<div id="tabs1">
 <div class="menu1box">
 <ul id="menu1">
 <li class="hover" onmouseover="setTab(1,0)"><a href="#">新闻</a></li>
 <li onmouseover="setTab(1,1)"><a href="#">评论</a></li>
 <li onmouseover="setTab(1,2)"><a href="#">技术</a></li>
 <li onmouseover="setTab(1,3)"><a href="#">点评</a></li>
 </ul>
 </div>
 <div class="main1box">
 <div class="main" id="main1">
 <ul class="block"><li>新闻列表</li></ul>
 <ul><li>评论列表</li></ul>
 <ul><li>技术列表</li></ul>
 <ul><li>点评列表</li></ul>
 </div>
 </div>
</div>
<br />
<br />
<!--第三种形式-->
<div id="tabs2">
 <div class="menu2box">
 <div id="tip2"></div>
 <ul id="menu2">
 <li class="hover" onmouseover="nowtab(2,0)"><a href="#">新闻</a></li>
 <li onmouseover="nowtab(2,1)"><a href="#">评论</a></li>
 <li onmouseover="nowtab(2,2)"><a href="#">技术</a></li>
 <li onmouseover="nowtab(2,3)"><a href="#">点评</a></li>
 </ul>
</body>
*/