function getXMLHTTPRequest() {
	var req;
	try {
		req = new XMLHttpRequest();
	} catch(err1) {
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (err2) {
		try {
			req = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (err3) {
			req = false;
		}
	}
	}
	return req;
}