function ajaxFunction() {
	var xmlHttp;

	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
		return xmlHttp; 
	} catch (e) {
	// Internet Explorer
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
			return xmlHttp; 
		} catch (e) {
			try {
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
				return xmlHttp; 
			} catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			} //catch (e)
		} //catch (e)
	} //catch (e)

} //ajaxFunction()