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<?php
/* We must use this header to be correct and for the css validator to
find our stylesheet without us having to provide a fully qualified
path (address) to it. */
header("Content-type:application/xhtml+xml; charset=utf-8");
echo '<'.'?xml version="1.0" encoding="utf-8"?'.'>';
?>
<body>
<div id="container">
<div id="header">Top area</div>
<div id="left-menu">
<ul>
<li><a href="index.php">Home</a></li>
<li><a href="index.php?page=a">First Main Page</a></li>
<li><a href="index.php?page=b">Second Main Page</a></li>
</ul>
</div>
<div id="main">
<?php
if (isset($_GET["page"])) {
$thepage = $_GET['page'];
if ($thepage != 'a' && $thepage != 'b') {
print('You hacker you!');
}
else {
require('main-div-'.$thepage.'.html');
}
}
else {
require('main-div-a.html');
}
?>
</div>
<div id="right-menu">Right area</div>
<div id="footer">
<p>
<a href="http://validator.w3.org/check?uri=referer">
<img src="valid-xhtml10.png" alt="Valid XHTML 1.0 Strict"></img>
</a>
<a href="http://jigsaw.w3.org/css-validator/check?uri=referer">
<img src="vcss.png" alt="Valid CSS!"></img>
</a>
</p>
</div>
</div>
</body>
</html>
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