<h1></h1>
<h2>500 - ?</h2>
</head>
<h3>??</h3>
<body>
<!doctype html public "-//w3c//dtd xhtml 1.0 strict//en" "3./tr/xhtml1/dtd/
<meta http-equiv="tent-type" tent="text/html; charset=gb2312"/>
<title>500 - ?</title>
</html>
</body>
<html xmlns="3./1999/xhtml
<head>