function getParam(strName) {
	urlquery=location.href.split("?");
	if (urlquery[1]!=null) {
		querypairs=urlquery[1].split("&");
		var i = 0;
		while ( querypairs.length > i ) {
			parampair = querypairs[i].split("=");
			if (parampair[0] == strName) {
				return parampair[1];
			}
			i++;
		}
	}
	return null;
}

if (getParam('referrer')!=null) {
	setChip("Tracking", "Referrer", getParam('referrer'));
	}
else if (getParam('refer')!=null) {
	setChip("Tracking", "Referrer", getParam('refer'));
	}
else if (getChip("Tracking", "Referrer")==null) { //If there is no URL referrer parameter then use HTTP referrer
	setChip("Tracking", "Referrer", document.referrer);
	}