function semiCron()
{	
	/* ff zien of we moeten updaten (geen cron op server :) */
	if (window.ActiveXObject)
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
	else if (window.XMLHttpRequest)
		xhr = new XMLHttpRequest();

	xhr.open("GET","dlrss.php",true);
	xhr.setRequestHeader("Cache-Control", "no-cache");
	xhr.setRequestHeader("Pragma", "no-cache");
	xhr.send(null);
}
var xhr;