I'm making my site and I've chosen to make the width of the div.container in"%" .But still in 800x600 resolution everything moves slightly so It dosent look good...Could some one tell me what I'm doing wrong??
this Is the code...(I've validate this in W3C)
I've cut out the text so it would more understandable besides it was in polish

and it works in FF,IE and I think in Opera also..
<?xml version="1.0" encoding="windows-1250"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<!-- Created on: 2006-10-10 -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1250" />
<title>Schizofrenia.net.pl</title>
<style type="text/css">
div.container {width:100%; height:100%;}
img.mp {float:left;}
div.header {color: #FFC0CB; width: 100%; text-align: center; height: 10%; position: absolute; left: 0%; top: 0%; background: #FF9900; bottom: 0%}
div.footer {color: #FFC0CB; background-color: #CC0000; clear: left; width: 100%; text-align: center; height: 3%; position: fixed; bottom: 0%; float: left; left: 0%; }
div.left {float: left; width: 15%; text-align: left; position: absolute; top: 10%; left: 0%; background-color: #FF9900; height: 87%; bottom: 90%; }
div.right {float: right; width: 15%; text-align: right; position: absolute; top: 10%; right: 0%; background-color: #FF9900; height: 87%; bottom: 90%; }
div.content {width: 70%; text-align: left; background: url(sianob.jpg); height: auto; position: absolute; top: 10%; left: 15%; right: 15%; margin-right: auto; margin-left: auto; }
</style>
<!--[if IE]>
<style type="text/css" media="all">
div.header {color: #FFC0CB; width: 100%; text-align: center; height: 11%; position: absolute; left: 1%; right:0%; top: 0%; background: #FF9900; }
div.content {width: 70%; text-align: left; background: url(sianob.jpg); height: auto; position: absolute; top: 11%; left: 16%; right: 15%; margin-right: auto; margin-left: auto}
div.left {float: left; width: 15%; text-align: left; position: relative; top: 8%; left: 0%; background-color: #FF9900; height: 87%; bottom: 100%}
div.right {float: right; width: 15%; text-align: right; position: relative; top: 8%; right: 0%; background-color: #FF9900; height: 87%; bottom: 100%; clear: right}
div.footer {color: #FFC0CB; background-color: #CC0000; width: 100%; text-align: center; position: fixed; bottom: 0%; visibility: hidden}
</style>
<![endif]-->
</head>
<body>
<div class="container">
<div class="header" > <img src="../Grafika/Loga/mologoS1.gif" width="60" height="60" alt="logo" /> <img src="baner.gif" width="468" height="60" alt="baner"/></div>
<div class="left">
<script type="text/javascript" src="menu_.js" alt="menu"></script>
</div>
<div class="content">
<h2>Free Web Building Tutorials</h2>
<p>At W3Schools you will find all the Web-building tutorials you need,
from basic HTML and XHTML to advanced XML, XSL, Multimedia and WAP.</p>
<p>W3Schools - The Largest Web Developers Site On The Net!</p>
<img class="mp" src="../Grafika/Loga/ologoS10.gif" width="149" height="153" alt="logo"/>
</div>
<div class="right">
<script type="text/javascript" src="menu_.js" alt="menu" ></script>
</div>
<div class="footer">Copyright 2006 by Różowe Słonie w Seledynowe Groszki.</div>
</div>
</div>
</body>
</html>