function setsessionvar (varname, value, reloadneeded)
{	
	$.post (
		root + "/modules/ajax/setsessionvar.php",
		{varname:varname, value:value},
		function (data)
		{
			if (data != "ok")
				alert (data);
				
			if (reloadneeded)
				document.location = document.location;
		}
	);
}