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Jun 24, 2016 pm 12:32 PM

<!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>css菜单演示</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: 180px; position: absolute; } #nav li ul li{  float: left; width: 180px;  background: #F6F6F6; } #nav li ul a{  display: block; width: 156px;text-align:left;padding-left:24px; } #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="#">产品介绍</a>  <ul>  <li><a href="#">产品一</a></li>  <li><a href="#">产品一</a></li>  <li><a href="#">产品一</a></li>  <li><a href="#">产品一</a></li>  <li><a href="#">产品一</a></li>  <li><a href="#">产品一</a></li>  </ul> </li> <li><a href="#">服务介绍</a>  <ul>  <li><a href="#">服务二</a></li>  <li><a href="#">服务二</a></li>  <li><a href="#">服务二</a></li>  <li><a href="#">服务二服务二</a></li>  <li><a href="#">服务二服务二服务二</a></li>  <li><a href="#">服务二</a></li>  </ul> </li> <li><a href="#">成功案例</a>  <ul>  <li><a href="#">案例三</a></li>  <li><a href="#">案例</a></li>  <li><a href="#">案例三案例三</a></li>  <li><a href="#">案例三案例三案例三</a></li>  </ul> </li> <li><a href="#">关于我们</a>  <ul>  <li><a href="#">我们四</a></li>  <li><a href="#">我们四</a></li>  <li><a href="#">我们四</a></li>  <li><a href="#">我们四111</a></li>  </ul> </li> <li><a href="#">在线演示</a>  <ul>  <li><a href="#">演示</a></li>  <li><a href="#">演示</a></li>  <li><a href="#">演示</a></li>  <li><a href="#">演示演示演示</a></li>  <li><a href="#">演示演示演示</a></li>  <li><a href="#">演示演示</a></li>  <li><a href="#">演示演示演示</a></li>  <li><a href="#">演示演示演示演示演示</a></li>  </ul> </li> <li><a href="#">联系我们</a>  <ul>  <li><a href="#">联系联系联系联系联系</a></li>  <li><a href="#">联系联系联系</a></li>  <li><a href="#">联系</a></li>  <li><a href="#">联系联系</a></li>  <li><a href="#">联系联系</a></li>  <li><a href="#">联系联系联系</a></li>  <li><a href="#">联系联系联系</a></li>  </ul> </li> </ul> </body> </html>

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