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一款兼容性很好的标准二级css下拉菜单

<!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" lang="zh-CN">    <head>    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />    <title>一款兼容性很好的标准二级css下拉菜单</title>    <style type="text/css">    <!--    * {    margin:0;    padding:0;    border:0;    }    body {    font-family: arial, 宋体, serif;    font-size:12px;    }    #nav {    line-height: 24px;    list-style-type: none;    background:#666;    }    #nav a {    display: block;    width: 80px;    text-align:center;    }    #nav a:link {    color:#666;    text-decoration:none;    }    #nav a:visited {    color:#666;    text-decoration:none;    }    #nav a:hover {    color:#FFF;    text-decoration:none;    font-weight:bold;    }    #nav li {    float: left;    width: 80px;    background:#CCC;    }    #nav li a:hover {    background:#999;    }    #nav li ul {    line-height: 27px;    list-style-type: none;    text-align:left;    left: -999em;    width: 80px;    position: absolute;    }    #nav li ul li {    float: left;    width: 80px;    background: #F6F6F6;    }    #nav li ul a {    display: block;    width: 80px;    text-align:center    }    #nav li ul a:link {    color:#666;    text-decoration:none;    }    #nav li ul a:visited {    color:#666;    text-decoration:none;    }    #nav li ul a:hover {    color:#F3F3F3;    text-decoration:none;    font-weight:normal;    background:#C00;    }    #nav li:hover ul {    left: auto;    }    #nav li.sfhover ul {    left: auto;    }    #content {    clear: left;    }    -->    </style>    <script type=text/javascript><!--//--><![CDATA[//><!--    function menuFix() {    var sfEls = document.getElementById("nav").getElementsByTagName("li");    for (var i=0; i<sfEls.length; i++) {    sfEls[i].onmouseover=function() {    this.className+=(this.className.length>0? " ": "") + "sfhover";    }    sfEls[i].onMouseDown=function() {    this.className+=(this.className.length>0? " ": "") + "sfhover";    }    sfEls[i].onMouseUp=function() {    this.className+=(this.className.length>0? " ": "") + "sfhover";    }    sfEls[i].onmouseout=function() {    this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),    "");    }    }    }    window.onload=menuFix;    //--><!]]></script>    </head>    <body>    <ul id="nav">    <li><a href="#">CsrCode.Cn</a>    <ul>    <li><a href="http://www.hongshan1006.com/">保定广告策划公司</a></li>    <li><a href="#">七彩影视</a></li>    <li><a href="#">生活常识</a></li>    <li><a href="#">珊珊影视</a></li>    <li><a href="http://www.sjzpcmm.com/">石家庄苗木</a></li>      </ul>    </li>    </ul>    </body>    </html>    <br>← 鼠标移到左边的链接查看预览效果~~ <br><hr>    

 

一款兼容性很好的标准二级css下拉菜单