效果图如下：
查看演示 源码下载
html代码
<!DOCTYPE html>
<html>
<head>
<title>tab测试</title>
<meta http-equiv=Content-Type content=text/html; charset=UTF- />
<link href=css/tab.css rel=stylesheet type=text/css />
[removed][removed]
</head>
<body>
<div id=tab>
