1.背景图填充
这是使用最广泛的一种做法，无hacks，推荐使用：
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Strict//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd”>
<html xmlns=”http://www.w3.org/1999/xhtml”>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>Equal height(列高度相同的方法)</title>
<style type=”text/css”>
body{
padding: 0;
margin: 0;
font-size: 12px;
font-family: Arial, Helvetica, sans-serif;
line-height: 140%;
background:#E7DFD3;
}
#middle{
width: 580px;
float:left;
background:#FFFFFF;
text-align:left;
}
#header,#footer{
background: #E8E8E8;
width: 750px;
text-align:center;
}
#sideleft{
width: 580px;
float: left;
position:relative;
margin-left:-580px;
}
#sideright{
width: 170px;
float: right;
position:relative;
margin: 0 -170px 0 0;
background: #F0F0F0;
}
#footer{
clear:both;
}
h1,h2,address,p{
margin: 0;
padding: .8em;
}
h1,h2{font-size: 20px;}
</style>
<script type=”text/javascript”>
// <![CDATA[
function toggleContent(name,n) {
var i,t=”,el = document.getElementById(name);
if (!el.origCont) el.origCont = el.innerHTML;
for (i=0;i<n;i++) t += el.origCont;
el.innerHTML = t;
}
// ]]>
</script>
</head>
<body>
<div id=”header”>
<h1>Head</h1>
<div id=”middle”>
<div id=”sideright”>
<div id=”sideleft”>
<h2>sideleft</h2>
<p><a href=”javascript:toggleContent(‘sideleft’,1)”>默认长度</a> <a href=”javascript:toggleContent(‘sideleft’,2)”>加长页面</a></p>
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