try{
	function keepActive()
	{
		var xmlhttp;
		if (window.XMLHttpRequest) {
			// code for IE7+, Firefox, Chrome, Opera, Safari
			xmlhttp=new XMLHttpRequest();
		}
		else if (window.ActiveXObject) {
			// code for IE6, IE5
			xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		}

		xmlhttp.open('GET','/keepActive.php',true);
		xmlhttp.send(null);

		setTimeout('keepActive()', 60*1000);
	}
	setTimeout('keepActive()', 60*1000);
}
catch(er){
	//alert(er);
}