private var _myService:URLLoader;
private function initializeHandler(event:Event):void {
_myService = new URLLoader( );
_myService.addEventListener(Event.COMPLETE,myCompleteHandler);
_myService.load(new URLRequest("http://localhost/my.xml"));
XML.ignoreWhitespace = true;
}
private function myCompleteHandler(event:Event):void {
var xml:XML = new XML(_myService.data);
myComboBox.dataProvider = xml.children( );
}