Mine

<?php require('config.php'); ?>
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html>
<head>

	<link rel="stylesheet" href="./style.css" type="text/css">
	<title><?php echo $config['sitename']; ?> - <?php echo $pagename; ?></title>
	<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1" />
</head>
<body>
<img src="images/logo.png" /><span style="text-align: center; font-size=xx-large; font-weight: bold">     <?php echo $config['sitename']; ?> - <?php echo $pagename; ?></span><br />
<?php
	if (isset($_GET['page']) && file_exists($_GET['page'] . '.php'))
		$page = $_GET['page'];
	else
		$page = $config['default_page'];

	include('pages/' . $page . '.php');
?>
</body>
</html>