con questo codice non mi funziona
<!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=iso-8859-1" />
<title>Fixed Width CSS Layouts - 1 Column - fw-6-1-col</title>
<link rel="stylesheet" type="text/css" href="main.css" />

<script type="/text/javascript" src="/js/prototype.js"></script>
<script type="/text/javascript" src="/js/scriptaculous.js?load=effects,builder"></script>
<script type="/text/javascript" src="/js/lightbox.js"></script>
<link rel="stylesheet" href="css/lightbox.css" type="text/css" media="screen" />

<style type="text/css">
<!--
a:link {
text-decoration: none;
}
a:visited {
text-decoration: none;
}
a:hover {
text-decoration: none;
}
a:active {
text-decoration: none;
}
-->

</style></head>

<body>


<div id="wrapper">


<div id="header">

This is the Header

</div>




<div id="navigation">

This is the Navigation

</div>



<div id="content">
<link rel="stylesheet" href="css/lightbox.css" type="text/css" media="screen" />



[img]images/thumb-1.jpg[/img] [img]images/thumb-1.jpg[/img]</p>

</div>


</div>


</body>
</html>