// javascript file

function getXmlHttp() {
	var xmlHttpObject;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttpObject=new XMLHttpRequest();
	}
	catch (e) {
		// Internet Explorer
		try {
			xmlHttpObject=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
			  xmlHttpObject=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
			  alert("This page will not function properly because\nyour web browser does not support AJAX");
			}
		}
	}
	return xmlHttpObject;
}