signout.php at PHP Enter

<?php session_start();

unset($_SESSION['cusid']);

unset($_SESSION['AINC_US_ID']);
			unset($_SESSION['AINC_US_NAME']);
			
unset($_SESSION['HTTP_USER_AGENT']);
session_unset();
session_destroy(); 
echo"<center style=\"font-family:tahoma\">You have successfully logged out";
?>
<script type="text/javascript">
<!--
function delayer(){
    window.location = "signin.php"
}
//-->
</script>
<body onLoad="setTimeout('delayer()', 2000)">