keep_alive.php

<?php
session_start();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 "http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<title>Keep-Alive</title>
<script language="JavaScript" type="text/javascript">
<!--

	function refresh() {
		window.location.reload(true);
	}

	function body_onload() {
		self.setTimeout('refresh()', 300000);
	}

//-->
</script>
</head>
<body onload="body_onload();">

<?php echo( date('H:i:s d-m-Y') ); ?>

</body>
</html>