function getAjaxReq() {
	if(window.XMLHttpRequest) {
		try {
			var r = new XMLHttpRequest();
		} catch(e) {
			var r = false;
		}
	} else if(window.ActiveXObject) {
		try {
			var r = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
			var r = false;
		}
	}
	return r;
}