Full screen image (Loading bar)

Hello guys I’m new here and sorry for dummy question and bad english.
So I have made full screen image,but I don’t know how to create my custom loader linked with my this code.
This is my first OOP coding so it’s not to easy to me to understand…
Example: http://bit.ly/wI31N3


package com.jazokas.cursor
{
    
    import flash.display.Loader;
    import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageDisplayState;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.events.FullScreenEvent;
    import flash.events.MouseEvent;
    import flash.net.navigateToURL;
    import flash.net.URLRequest;
    import flash.net.URLVariables;

    import com.greensock.*;
    import com.greensock.easing.*;
    
    //Tadas Jazokas
    //www.jazokas.lt


    public class Main extends Sprite
    {
        
        private var loader:Loader;
        private static const IMAGE_PATH:String = "bg.jpg";
        public var cursor:Cursoriukas = new Cursoriukas();

        public function Main()
        {

            stage.align = StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.addEventListener(Event.RESIZE,stageResize);


            
            loader = new Loader  ;
            loader.load(new URLRequest(IMAGE_PATH));
            loader.contentLoaderInfo.addEventListener(Event.COMPLETE,showImage);

            pic.addChild(loader);
            stage.addChild(cursor);
            stage.addEventListener(MouseEvent.MOUSE_MOVE, pelyte);
      

        }



        private function showImage(e:Event):void
        {
            try
            {
                e.target.content.smoothing = true;

            }
            catch (e:Error)
            {
            }

            stageResize();
        }


    }
}