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;

}