效果体验：http://hovertree.com/texiao/mobile/5.htm
可以使用手机浏览器查看体验效果。
以下是手机底部导航栏完整代码，HTML文件代码：
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1" /> <title>手机底部导航栏 - 何问起</title><base target="_blank"/> <meta charset="utf-8" /> <link rel="stylesheet" type="text/css" href="http://hovertree.com/texiao/mobile/5/hovertreebottom.css" media="all"> </head> <body> <div class="bg"></div> <div class="hovertreebottom"> <nav> <div id="hovertreebottom_ul"> <ul class="box"> <li> <a href="javascript:;" class=""><span>何问起</span></a> <dl> <dd><a href="http://hovertree.com"><span>首页</span></a></dd> <dd><a href="http://hovertree.com/texiao/"><span>特效</span></a></dd> <dd><a href="http://hovertree.com/menu/aspnet/"><span>ASP.NET</span></a></dd> <dd><a href="http://hovertree.com/down/"><span>源码下载</span></a></dd> <dd><a href="http://hovertree.com/hvtart/bjae/j0x9ww3x.htm"><span>原文</span></a></dd> </dl> </li> <li> <a href="javascript:;" class=""><span>柯乐义</span></a> <dl> <dd><a href="http://keleyi.com"><span>首页</span></a></dd> <dd><a href="http://keleyi.com/a/bjad/5vw5k0au.htm"><span>CSS3旋转</span></a></dd> <dd><a href="http://tool.keleyi.com/"><span>工具</span></a></dd> <dd><a href="http://keleyi.com/menu/jquery/"><span>jQuery</span></a></dd> </dl> </li> <li> <a href="javascript:;" class="on"><span>HoverTree</span></a> <dl> <dd><a href="http://m.hovertree.com/"><span>谜语</span></a></dd> <dd><a href="http://m.hovertree.com/yzdd/bjae/a8rbum7w.htm"><span>看图回答</span></a></dd> <dd><a href="http://m.hovertree.com/miyu/bjae/m81a842g.htm"><span>何问起（猜字）</span></a></dd> <dd><a href="http://hovertree.com/menu/sqlserver/"><span>Sql Server</span></a></dd> </dl> </li> </ul> </div> </nav> <div id="hovertreebottom_masklayer" class="masklayer_div on"> </div> </div> <script src="http://hovertree.com/texiao/mobile/5/hovertreebottom.js"></script> <script type="text/javascript"> hovertreebottom.bindClick(document.getElementById("hovertreebottom_ul").querySelectorAll("li>a"), document.getElementById("hovertreebottom_masklayer")); </script> </body> </html>
当一级菜单的样式为 class="on" 时，默认是自动弹出子菜单
例如
<a href="javascript:;" class="on"><span>HoverTree</span></a>