function _e(id) { return document.getElementById(id); }

function processRequest(page) {
	var xmlObj = false;
	var elem = _e('main');
        //elem.innerHTML = '<div style="width:700px; text-align:center;"><img src="images/loading.gif" width="320" /></div>';
	if(window.XMLHttpRequest) xmlObj = new XMLHttpRequest();
	else if(window.ActiveXObject) xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
	if (xmlObj) {
		var myurl = 'pages/' + page + '.php';
		//pageTracker._trackPageview(myurl);
		xmlObj.onreadystatechange = function() {
			// 0=Uninitialised 1=Loading 2=Loaded 3=Interactive 4=Completed
			if (xmlObj.readyState == 4) {
				var result = xmlObj.responseText;
				elem.innerHTML = result;
                                try { elem.focus(); } catch(err) {}
			}
		}
		xmlObj.open("GET", myurl, true);
		xmlObj.send (null);
	} else {
		alert ('xmlObj is null!');
	}
}