function createRequest() {
	var req = false;
	if (!req && typeof XMLHttpRequest != 'undefined') {
		req = new XMLHttpRequest();
	} else {
		try {
			req = new ActiveXObject('Msxml2.XMLHTTP');
		} catch (e) {
			try {
				req = new ActiveXObject('Microsoft.XMLHTTP');
			} catch (e) {
				req = false;
			}
		}
	}
	return req;
}