<!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"> <head> <title> new document </title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <link rel="stylesheet" type="text/css" href="" /> <style type="text/css"> body, div, p, h1, h2, h3, h4, h5, h6, ul, ol, li, dl, dd, dt, img, form { padding:0px; margin:0px; border:0; font-size:14px; } h1, h2, h3, h4, h5, h6 { font-size:14px; font-weight:100; margin-top:0px !important; margin-bottom:0px !important;} ul li {list-style:none;} a{text-decoration:none;} .box{width:100%;back-ground:#F2F2f2;} .content{width:1000px;height:500px;margin:0 auto;background-color:#FFF;} .qe li a{ font-size:14px; color:#000000;width:176px;font-weight:bolder; text-align:center;display:block; height:40px; border:solid 1px #E5E5E5; border-top:0px solid #E5E5E5;line-height:40px; } .qe li a:hover{ font-size:15px; color:#C30D23;background:#fff;} .yang{background: #EAE9E7;} </style> <script type="text/javascript" src="jquery-1.7.1.min.js"></script> <script type="text/javascript"> $(function(){ $(".shx").click(function(){ $(this).addClass(‘yang‘).siblings().removeClass("yang"); }); $(‘#zcc‘).addClass(‘yang‘); }); </script> </head> <body> <div class="box"> <div class="content"> <div style="width:176px;background-color:#EAE9E7;"> <div> <img src="about.png" style="width:176px;"> </div> <div class="qe" style="float:left;width:176px;"> <ul> <li class="shx" id="zcc"><a href="#">企业简介</a></li> <li class="shx"><a href="#">公司资质</a></li> <li class="shx"><a href="#">平台公告</a></li> <li class="shx"><a href="#">行业新闻</a></li> <li class="shx"><a href="#">招贤纳士</a></li> <li class="shx"><a href="#">合作伙伴</a></li> <li class="shx"><a href="#">联系我们</a></li> </ul> </div> </div> </div> </div> </body> </html>
原文：http://www.cnblogs.com/yangzailu/p/5826885.html