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#all {position:static; width:100%; z-index:100;}#left { position:fixed; left:0px; top:72px; width:230px}
* html #left { position:absolute; }
#header { position:fixed; z-index:400; left:0px; top:0px; height:70px; width:100%; }
* html #header { position:absolute; } #main {padding-top:72px;width:100%; text-align:left;z-index:101;}
#center { float:left; width:100%;padding-left:230px;height:500px;overflow-y:scroll}
</style>
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</form>
</body>
body{ margin: 0px 0px 0px 0px;padding: 0px 0px 0px 0px;border: 0px;height: 100%;overflow:hidden;}
#all {position:static; width:100%; z-index:100;}#left { position:fixed; left:0px; top:72px; width:230px}
* html #left { position:absolute; }
#header { position:fixed; z-index:400; left:0px; top:0px; height:70px; width:100%; }
* html #header { position:absolute; } #main {padding-top:72px;width:100%; text-align:left;z-index:101;}
#center { float:left; width:100%;padding-left:230px;height:500px;overflow-y:scroll}
</style>
<body>
<form id="form1" runat="server">
<div id="all" >
<div id="header">11111
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<div id="main">
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http://blog.csdn.net/precipitant/archive/2006/11/27/1416315.aspx