File Source for error

<?php
/**
* @version $Header: /cvsroot/bitweaver/_bit_kernel/error_simple.php,v 1.3 2005/07/17 17:36:05 squareing Exp $
* @package kernel
* @subpackage functions
*/
echo '<html><body><pre><p>';
if (isset($_REQUEST['error']) and !is_null($_REQUEST['error'])) {
echo strip_tags($_REQUEST['error']);
} else {
echo 'There was an unspecified error. Please go back and try again.';
}
?>
</p>
<form name="loginbox" action="<?=USERS_PKG_URL?>validate.php" method="post">
user: <input type="text" name="user" size="20" /><br />
pass: <input type="password" name="pass" size="20" /><br />
<input type="submit" name="login" value="login" /></form>
<p><a href="javascript:history.back()">Go back</a></p></pre></body></html>

Source for file error_simple.php