How to load a swf in AS3

Here is how to load an external SWF or JPG file

import flash.display.Loader;
import flash.net.URLRequest;
import flash.events.ProgressEvent;
import flash.events.Event;
import flash.errors.IOError;


var url = "...";

var loader:Loader = new Loader();
var urlreq:URLRequest = new URLRequest(url);

//add listeners:

loader.contentLoaderInfo.addEventListener(Event.INI, handleLoadIni);//This is called in the first frame of the movie not when the whole movie is loaded

loader.contentLoaderInfo.addEventListener(Event.COMPLETE, handleLoadComplete);//Called when the whole movie is done loaded

loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, handleLoadError);//Called if the movie fails to load

loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, handleProgress); //Used for preloader

//load
loader.load(urlreq);

private function handleLoadComplete(event:Event):void {
    var loader = event.target.loader; //reference to the loader object
    var content  = event.target.content; //reference to the swf

    this.addChild(content); //adds the movie to the stage
}