package utils {

	/*
	Author: Bassta
	Simple XML Loadig util - takes on parameter in the constructur function;
	path_to_xml is String, which tells where the xml file is 
	Dispatches Event.COMPLETE when the xml is loaded
	you can retrive the XML by using "xml" getter function
	*/
	
    import flash.events.*;
    import flash.net.*;
    
    public class LoadXMLUtil extends EventDispatcher{
	
        private var _source:XML;
		private var loader:URLLoader = new URLLoader();
		
        public function LoadXMLUtil(path_to_xml:String){
            loader.addEventListener(Event.COMPLETE, onComplete, false, 0, true);
            loader.load(new URLRequest(path_to_xml));
        }

        internal function onComplete(event:Event):void{
			loader.removeEventListener(Event.COMPLETE, onComplete);
            XML.ignoreWhitespace = true;
            _source = new XML(event.target.data);
            dispatchEvent(event.clone());
        }

        public function get xml():XML{
            return _source;
        }

        
    }//end
}

Simple usage:

var xmlLoader:LoadXMLUtil = new LoadXMLUtil("path_to_xml.xml");
xmlLoader.addEventListener(Event.COMPLETE, onLoaderComplete);

private function onLoaderComplete(event:Event):void{
			trace("Loaded XML: ");
			trace(xmlLoader.xml);
		}

Easy XML Loading util

xml

ActionScript 3