function createRequest() {
	var myRequest = null;
	try {
		myRequest = new XMLHttpRequest();
	} catch (trymicrosoft) {
		try {
			myRequest = new ActiveXObject("Msxm12.XMLHTTP");
		} catch (othermicrosoft) {
			try {
				myRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (failed) {
				myRequest = null;
			}
		}
	}
	
	if (myRequest == null) {
		alert("Error Creating Request Object"); 
	} else {
		return myRequest;
	}
}

var enquiryRequest = createRequest();