function Ajax() {
	var xmlhttp, bComplete = false;
	try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
	catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
	catch (e) { try { xmlhttp = new XMLHttpRequest(); }
	catch (e) { xmlhttp = false; }}}
	if (!xmlhttp) return null;
	this.connect = function(sURL, sMethod, sVars, fnDone) {
		if (!xmlhttp) return false;
		bComplete = false;
		sMethod = sMethod.toUpperCase();
		try {
		  if (sMethod == "GET") {
		    xmlhttp.open(sMethod, sURL+"?"+sVars, true);
		    sVars = "";
		  } else {
		    xmlhttp.open(sMethod, sURL, true);
		    xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
		    xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		  }
		  xmlhttp.onreadystatechange = function(){
		    if (xmlhttp.readyState == 4 && !bComplete) {
		      bComplete = true;
		      fnDone(xmlhttp);
		    }};
		  xmlhttp.send(sVars);
		}
		catch(z) { return false; }
		return true;
	};
	return this;
}