function popUp()
	{
		var url = "guestbook/index.php";
		var width = 1024;
		var height = 600;
		var x = (screen.availWidth - width) / 2;
		var y = (screen.availHeight - height) / 2;
		var open = window.open(url,"","width=" + width + ",height=" + height + ",left=" + x + ",top=" + y + "personalbar=no,locationbar=no,toolbar=no,scrollbars=no,menubar=no,status=no,resizable=no");
		open.focus();
		
		
		
		
	}