<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<style>
body { margin:0; text-align:center}
#nav { background: #99FF99; height: 60px;width:1000px;float:none; }
#nav UL LI{ float:left;BORDER-LEFT: #497ab9 1px solid;BORDER-RIGHT: #2a5293 1px solid;}
#mainContent { background: #99FF99; height: 60px;width:1000px;float:none; }
#side { background: #99FF99; height: 300px; width: 120px; float: left; }
#side1 { background: #99FF99; height: 300px; width: 120px; float: right; }
#main { background: #99FFFF; height: 300px; margin:0 120px 0 120px; }
#foot { background: #99FF99; height: 60px;width:1000px;float:none; }
</style>
</head>
<body>
<div >页脚</div>
</body>
</html>