<?php
// Generate XML header if browser accepts
if ( stristr($_SERVER["HTTP_ACCEPT"],"application/xhtml+xml") ) {
    
header("Content-type: application/xhtml+xml");
    echo 
'<?xml version="1.0" encoding="utf-8"?>';
}
else {
    
header("Content-type: text/html");
}
?>

<!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" xml:lang="en">
<head>
<title></title>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8" />
<link href="styles/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
</body>
</html>