var request = null;

		try {

			request = new XMLHttpRequest();

		} catch (trymicrosoft) {

			try {

				request = new ActiveXObject("Msxm12.XMLHTTP");

			} catch (othermicrosoft) {

				try {

					request = new ActiveXObject("Microsoft.XMLHTTP");

				} catch (failed) {

					request = null;

				}

			}

		}

		if (request == null)

			alert("Error creating request object!");