_this = XHRequest.prototype;
function XHRequest(){}
_this.getObject = function() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	else {
		alert("XML HTTP Request support cannot be found!");
		return null;
	}
}