signout.php at php Blogger

<?php session_start();
/* * ********************************************************************
*  Copyright notice PHP Blogger 1.1.
*
*  (c) 2011 Predrag Rukavina - admin[at]phpblogger[dot]org
*  All rights reserved
*
*  This script is part of the PHP Blogger project. 
*  The PHP Blogger project is free software; you can redistribute it and/or
*  modify it under the terms of the GNU General Public License
*  as published by the Free Software Foundation; either version 2
*  of the License, or (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
*  MA  02110-1301, USA.
*
*  This copyright notice MUST appear in all copies of the script!
* ********************************************************************** */
##############################
# signout.php    version 1.1.#     
##############################
unset($_SESSION['cusid']);
unset($_SESSION['INC_USER_ID']);
unset($_SESSION['INC_USER_NAME']);
unset($_SESSION['INC_USER_THUMB']);
unset($_SESSION['INC_USER_PRIV']);
unset($_SESSION['HTTP_USER_AGENT']);
unset($_SESSION['logged_in']);
unset($_SESSION['ss_fprint']);
session_unset();
session_destroy();
?>
<script type="text/javascript">
function delayer(){
    window.location = "index.php"
}
</script>
<body onLoad="setTimeout('delayer()', 2000)">
<center><img style="margin-top:120px;" src="themes/classic/styles/images/36-0.gif" border="0">
<br /><br /><b><font style="font-family:verdana;font-size:13px;color:#555;">You have successfully logged out</font></center>