frameset的居中问题
<html>
<head>
<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>中能电力科技开发有限公司</title>
</head>
<frameset cols="1*,800,1*" border="0px" frameborder="0" framespacing="0px">
<frame src="empty.htm" scrolling="no" noresize>
<frameset rows="60,*" border="0" frameborder="0" framespacing="0" style=" ">
<frame name="top" scrolling="no" target="main" src="top.htm" frameborder="0" noresize>
<frameset rows="36,*" border="0" frameborder="0" framespacing="0">
<frame name="navigate" src="navigate.htm" target="contents" scrolling="no" frameborder="0" noresize>
<frame name="main" src="./shouye/shouye.htm" frameborder="0" noresize>
</frameset>
</frameset>
<frame src="empty.htm">
</frameset>
<noframes>
<body>
<p>此网页使用了框架，但您的浏览器不支持框架。</p>
</body>
</noframes>
</html>
