Help with AS3 event handler. Loading SWF into an MC.

package {
// Imports
	import flash.display.MovieClip;
	import flash.display.DisplayObject;
	import flash.display.Loader;
	import flash.net.URLLoader;
	import flash.net.URLRequest;
	import flash.events.Event;
	import flash.events.MouseEvent;
 
 
	public class Main extends MovieClip {
// =============================================================================================
// PROPERTIES
// =============================================================================================
 
// ===============================================================================
// PRIVATE CLASS METHODS & PROPS
		protected var mc                        :MovieClip;
		protected var clickButton               :MovieClip;
 
// ===============================================================================
// PRIVATE CLASS METHODS & PROPS
 
// ===============================================================================
// PRIVATE INSTANCE METHODS
 
// ----------------------------------------------------------------------------------------------
// Constructor
// ----------------------------------------------------------------------------------------------		
		public function Main() {
			setupButton();
		}
// ----------------------------------------------------------------------------------------------
// Setup the button
// ----------------------------------------------------------------------------------------------		
		protected function setupButton():void {
			clickButton.addEventListener(MouseEvent.CLICK, mainClick);
			clickButton.addEventListener(MouseEvent.MOUSE_OVER, mainRoll);
			clickButton.addEventListener(MouseEvent.MOUSE_OUT, mainRollOut);
			clickButton.buttonMode = true;
			clickButton.mouseChildren = false;
		}
// ----------------------------------------------------------------------------------------------
// Rollover script
// ----------------------------------------------------------------------------------------------		
		protected function mainRoll(e:Event):void {
			//	Rollover script
		}
// ----------------------------------------------------------------------------------------------
// Rollout script
// ----------------------------------------------------------------------------------------------		
		protected function mainRollOut(e:Event):void {
			//	Rollout script
		}
// ----------------------------------------------------------------------------------------------
// Loading script
// ----------------------------------------------------------------------------------------------		
		protected function mainClick(e:Event):void {
			var loader:Loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.INIT, allComplete);
	 		var urlReq:URLRequest = new URLRequest('news.swf');
			loader.load(urlReq);
		}
// ----------------------------------------------------------------------------------------------
// When the file has uploaded attach the loaded stuff to the movieclip 'mc' that is on the stage
// ----------------------------------------------------------------------------------------------		
		protected function allComplete(e:Event):void{
   			mc.addChild(e.target.content);
		}
	}
}

                                  

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