function HTTPRequestObject () {
	var xmlHttp;
	try {
		xmlHttp = new XMLHttpRequest();
	} catch (e) {
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Your browser does not support programming that is needful for this document!");
				return false;
			}
		}
	}
	return xmlHttp;
}

var requestObj = HTTPRequestObject ();