function FactoryXMLHttpRequest() {
	if(window.XMLHttpRequest) {
		return new XMLHttpRequest();
	}
	else if(window.ActiveXObject) {
		var msxmls = new Array('Msxml2.XMLHTTP.5.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0','Msxml2.XMLHTTP','Microsoft.XMLHTTP');
		for (var i = 0; i < msxmls.length; i++) {
			try {
				return new ActiveXObject(msxmls[i]);
			} catch (e) {
			}
		}
	}
	throw new Error("Could not instantiate XMLHttpRequest");
}