符合Web标准的网站导航菜单，完全是XHTML+CSS实现的，效果还很不错啊！
<!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>站酷CSS代码演示-http://www.gaoqian.com</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style type="text/css"> body{ background-color:white; font-size:12px; font-family:Arial, Helvetica, sans-serif; margin:0px; padding:0px; color:white; } ul,li{ margin:0px; padding:0px; } li{ display:inline; list-style:none; list-style-position:outside; text-align:center; font-weight:bold; float:left; } a:link{ color:#336601; text-decoration:none; float:left; width:100px; padding:3px 5px 0px 5px; } a:visited{ color:#336601; text-decoration:none; float:left; padding:3px 5px 0px 5px; width:100px; } a:hover{ color:white; float:left; padding:3px 3px 0px 20px; width:88px; text-decoration:none; background-color:#539D26; } a:active{ color:white; float:left; padding:3px 3px 0px 20px; width:88px; text-decoration:none; background-color:#539D26; } #nav{ width:600px; height:30px; border-bottom:0px; padding:0px 5px; position:absolute; z-index:1; left: 198px; top: 25px; } .list{ line-height:20px; text-align:left; padding:4px; font-weight:normal; } .menu1{ width:120px; height:auto; margin:6px 4px 0px 0px; border:1px solid #9CDD75; background-color:#F1FBEC; color:#336601; padding:6px 0px 0px 0px; cursor:hand; overflow-y:hidden; filter:Alpha(opacity=70); -moz-opacity:0.7; } .menu2{ width:120px; height:18px; margin:6px 4px 0px 0px; background-color:#F5F5F5; color:#999999; border:1px solid #EEE8DD; padding:6px 0px 0px 0px; overflow-y:hidden; cursor:hand; } </style> </head> <body> <div id="nav"> <ul> <li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">站酷首页 <div class="list"> <a href="#">我的Png</a><br /> <a href="#">我的Gif</a><br /> <a href="#">我的酷站</a><br /> <a href="#">我的日志</a><br /> <a href="#">我的相册</a><br /> <a href="#">我的收藏</a><br /> </div> </li> <li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">社区圈子 <div class="list"> <a href="#">我的CHINAY</a><br /> <a href="#">我的首页</a><br /> <a href="#">我的日志</a><br /> <a href="#">我的相册</a><br /> <a href="#">我的收藏</a><br /> </div> </li> <li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">我的短信 <div class="list"> <a href="#">我的CHINAY</a><br /> <a href="#">我的相册</a><br /> <a href="#">我的收藏</a><br /> </div> </li> <li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">账户管理 <div class="list"> <a href="#">我的CHINAY</a><br /> <a href="#">我的首页</a><br /> <a href="#">我的日志</a><br /> <a href="#">我的相册</a><br /> <a href="#">我的收藏</a><br /> <a href="#">我的日志</a><br /> <a href="#">我的相册</a><br /> <a href="#">我的收藏</a><br /> </div> </li> </ul> </div> </body> </html>
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]