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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" mrc="text/html; charset=gb2312" />
<title>双层嵌套的滑动门导航块</title>
<style>
*{
font-size:9pt;
}
#tab{width:400px;
height:auto;
margin:0 auto;
position:relative;
}
ul{list-style:none; margin-left:20px;}
li{ float:left;height:30px;background:url(http://p1.mb5u.com/texiao/1/tr2.jpg);margin:0 5px;text-align:center;line-height:30px;color:#293863;width:60px; position:relative;bottom:-3px;}
.dise{display:block;}
.undise{display:none;}
.fff{background:
url(http://p1.mb5u.com/texiao/1/tr.jpg);}
.all{clear:left; width:400px;}
.all div{width:400px;background-color:#F2F5FA;text-align:left;line-height:20px; height:200px;
border:1px #CCCDCD solid; }/*一定要设border*/
#kao{position:absolute;
top:40px;
}
</style>
</head>
<script language="javascript">
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