var ajax = false;

if (window.XMLHttpRequest) {

ajax = new XMLHttpRequest();

} else if (window.ActiveXObject) {

try {

ajax = new ActiveXObject("Msxml2.XMLHTTP");

} catch (e1) {

try {

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

 } catch (e2) { }

	}
}


if (!ajax) {

alert ('AJAX page functionality is unavailable.');

}