function createXHR() {
	var request = false;
	
	try {
		request = new ActiveXObject('Msxml2.XMLHTTP');
	}
	catch (err2) {
		try {
			request = new ActiveXObject('Microsoft.XMLHTTP');
		}
		catch (err3) {
			try {
				request = new XMLHttpRequest();
			}
			catch (err1) {
				request = false;
			}
		}
	}
	return request;
}