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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Three-Column Layout Demonstration</title>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1" />
<style rel="stylesheet" type="text/css">
#top {
margin: 20px;
padding: 10px;
background: #ccc;
height: 100px;
}
#left {
position: absolute;
left: 10px;
top: 160px;
width: 200px;
}
#center {
margin-left: 220px;
margin-right: 220px;
background: #ccc;
}
#right {
position: absolute;
right: 10px;
top: 160px;
width: 200px;
}
#footer {
background: #ccc;
margin: 20px;
text-align: center;
visibility: hidden;
}
div > p {
margin-top: 0;
}
</style>
<script type="text/javascript">
// x.js
// X v3.10, Cross-Browser DHTML Library from Cross-Browser.com
// Copyright (c) 2002,2003 Michael Foster (mike@cross-browser.com)
// This library is distributed under the terms of the LGPL (gnu.org)
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xMoveTo(e, e.xTarget, e.yTarget);
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xWidth(e,uW);
xHeight(e,uH);
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uH=Math.round(uH);
var css=xDef(e.style);
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uH=e.offsetHeight;
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// thank moz for the next 2000 bytes
function xGetCS(ele,sP){return parseInt(document.defaultView.getComputedStyle(ele,"").getPropertyValue(sP));}
function xSetCW(ele,uW){
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var pl=0,pr=0,bl=0,br=0;
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pr=xGetCS(ele,"padding-right");
bl=xGetCS(ele,"border-left-width");
br=xGetCS(ele,"border-right-width");
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pl=ele.offsetWidth-uW;
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var cssW=uW-(pl+pr+bl+br);
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function xSetCH(ele,uH){
if(uH<0) return;
var pt=0,pb=0,bt=0,bb=0;
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pt=xGetCS(ele,"padding-top");
pb=xGetCS(ele,"padding-bottom");
bt=xGetCS(ele,"border-top-width");
bb=xGetCS(ele,"border-bottom-width");
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pt=parseInt(ele.currentStyle.paddingTop);
pb=parseInt(ele.currentStyle.paddingBottom);
bt=parseInt(ele.currentStyle.borderTopWidth);
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function xClip(e,iTop,iRight,iBottom,iLeft) {
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// Event:
function xAddEventListener(e,eventType,eventListener,useCapture) {
if(!(e=xGetElementById(e))) return;
eventType=eventType.toLowerCase();
if((!xIE4Up && !xOp7) && e==window) {
if(eventType=='resize') { window.xPCW=xClientWidth(); window.xPCH=xClientHeight(); window.xREL=eventListener; xResizeEvent(); return; }
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var eh="e.on"+eventType+"=eventListener";
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eval(eh);
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function xRemoveEventListener(e,eventType,eventListener,useCapture) {
if(!(e=xGetElementById(e))) return;
eventType=eventType.toLowerCase();
if((!xIE4Up && !xOp7) && e==window) {
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eval(eh);
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this.type = "";
this.target = null;
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this.offsetY = 0;
this.keyCode = 0;
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if(!e) return;
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return h;
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// end x.js
</script>
<script type="text/javascript">
function adjustLayout()
{
// Get natural heights
var cHeight = xHeight("centercontent");
var lHeight = xHeight("leftcontent");
var rHeight = xHeight("rightcontent");
// Find the maximum height
var maxHeight = Math.max(cHeight, Math.max(lHeight, rHeight));
// Assign maximum height to all columns
xHeight("center", maxHeight);
xHeight("left", maxHeight);
xHeight("right", maxHeight);
// Show the footer
xShow("footer");
}
window.onload = function()
{
xAddEventListener(window, "resize", adjustLayout, false);
adjustLayout();
}
</script>
</head>
<body>
<div id="top">
<h1>
This is the header area of the three column plus header
layout
</h1>
</div>
<div id="left">
<div id="leftcontent">
<p>
This is quite straight-forward. Using absolute positioning,
this column has its upper left corner placed 10 pixels down
from the top of the document area of the browser and 10
pixels to the right of the left margin of that space. It
sets a fixed width for the column, though as we will see,
you could supply a relative value (such as a percentage) to
create a stretchy layout that would keep the left column's
width proportional to the document area's width.
</p>
</div>
</div>
<div id="center">
<div id="centercontent">
<p>
Notice that this column is not able to be positioned. Its
position will thus retain its "natural" place based on its
location in the HTML file that generates the page. Margin
settings ensure that the left and right columns (which are
set to 200 pixels in width) will have room for their content
without creating a visible space between any of the
adjoining columns.
</p>
</div>
</div>
<div id="right">
<div id="rightcontent">
<p>
The right-hand column is so much like the left-hand column
that it seems unworthy of comment.
</p>
</div>
</div>
<div id="footer">
<p>
This footer should float below the three columns.
</p>
</div>
</body>
</html>
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