var isIE = false;
		var req;
	
		function loadXMLDoc(url) {
			if (window.XMLHttpRequest) {
				req = new XMLHttpRequest();
				req.onreadystatechange = processReqChange;
				req.open("POST", url, true);
				req.send(null);
			} else if (window.ActiveXObject) {
				isIE = true;
				req = new ActiveXObject("Microsoft.XMLHTTP");
				if (req) {
					req.onreadystatechange = processReqChange;
					req.open("POST", url, true);
					req.send();
				}
			}
		}
		
		function processReqChange() {
			if (req.readyState == 4) {
				// only if "OK"
				if (req.status == 200) {
					// alert(req.responseText);
				} else {
					// alert("There was a problem retrieving the XML data:\n" +
					// req.statusText);
				}
			}
		}
		
		function clickThrough(url, node_id) {
			try {
				loadXMLDoc("/en/null/default/clickthrough/la?stats=true&url="+url+"&user_id=&node_id="+node_id+"&sid=2t20ojvevtu7vu5q1v72p51df3");
			}
			catch(e) {
				var msg = (typeof e == "string") ? e : ((e.message) ? e.message : "Unknown Error");
				// alert("Unable to get XML data:\n" + msg);
				return;
			}
		}