function XML() {}
XML.serialize = function(node) {
		try {
			return (new XMLSerializer()).serializeToString(node) ;
		}
		catch ( e ) {
			try {
				return node.xml;
			}
			catch ( e ) {
				alert('Xmlserializer not supported');
			}
		}
	    /* if (typeof XMLSerializer != "undefined")
		return (new XMLSerializer()).serializeToString(node) ;
		else if (node.xml) return node.xml;
		else throw "XML.serialize is not supported or can't serialize " + node; */
		return false;
};