javascript仿126邮箱TAB切换效果

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html;charset=gb2312" /> 
<title>简洁Tab</title> 
<style type="text/css"> 
 
</style> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%3E%20%0D%0A%3C!--%20%0D%0A%2F*%E7%AC%AC%E4%B8%80%E7%A7%8D%E5%BD%A2%E5%BC%8F%20%E7%AC%AC%E4%BA%8C%E7%A7%8D%E5%BD%A2%E5%BC%8F%20%E6%9B%B4%E6%8D%A2%E6%98%BE%E7%A4%BA%E6%A0%B7%E5%BC%8F*%2F%20%0D%0Afunction%20setTab(name%2Ccursel%2Cn)%7B%20%0D%0Afor(i%3D1%3Bi%3C%3Dn%3Bi%2B%2B)%7B%20%0D%0Avar%20menu%3Ddocument.getElementById(name%2Bi)%3B%20%0D%0Avar%20con%3Ddocument.getElementById(%22con_%22%2Bname%2B%22_%22%2Bi)%3B%20%0D%0Amenu.className%3Di%3D%3Dcursel%3F%22hover%22%3A%22%22%3B%20%0D%0Acon.style.display%3Di%3D%3Dcursel%3F%22block%22%3A%22none%22%3B%20%0D%0A%7D%20%0D%0A%7D%20%0D%0A%2F%2F--%3E%20%0D%0A%3C%2Fscript%3E"> 
</head> 
<body>

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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