<?php
Error_Reporting(0);
if (isset($a) and !ctype_alnum($a)) { die("<wml><card id="error" title="error"><p align="center">ERROR!</p></card></wml>");}
$a = intval($a);
header('Cache-Control: no-cache');
header("Content-type: image/gif");
readfile("avatars/$a.gif");
?>