function responseToXML( response )
{
	return Try.these( 
		function(){
			return new DOMParser().parseFromString(response.responseText, 'text/xml' ); 
		},
		function(){
			var xmldom = new ActiveXObject("Microsoft.XMLDOM");
			xmldom.loadXML(response.responseText); 
			return xmldom;
		}
	);
}