AS3 Load Txt

package  {
 
	import flash.net.URLLoader;
	import flash.net.URLRequest;
	import flash.events.Event;
	import flash.events.IOErrorEvent;
 
	public class GetExternalText {
 
		private var _txtFile:URLLoader;
		private var _txtString:String;
 
		public function GetExternalText() {
 
		}
 
		public function loadText(txtFile:String):void {
 
			_txtFile = new URLLoader();
			_txtFile.load(new URLRequest(txtFile));
			_txtFile.addEventListener(Event.COMPLETE, onLoadTXT, false, 0, true);
			_txtFile.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler, false, 0, true);//missing?
 
 
		}
 
 
		private function onLoadTXT(evt:Event):void {
			_txtString = evt.target.data;
			//clean up
			_txtFile.removeEventListener(Event.COMPLETE, onLoadTXT);
			_txtFile.removeEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
		}
 
 
		private function ioErrorHandler(evt:IOErrorEvent):void {
			trace("The following file could not be loaded: " + evt.text);
		}
 
		public function get loadedText():String {
			_txtString ||= "none loaded"
			return _txtString;
		}
 
	}
 
}