Trouble loading external images - non garbled edition

1

I am trying to simply load an external .jpg, and I am simply not getting it.
I am using Flash CS3.

The following code was shamelessly lifted from Actionscript 3.0 Cookbook, and I removed the package and class info.

The image “img1.JPG” is found in the same folder as the .fla file.
Each time I run the program, I just get a white screen.
Where I am going wrong?
TIA for an answer. --4hov13

 
import flash.display.Sprite;
import flash.display.Loader;
import flash.events.Event;
import flash.net.URLRequest;


// page 204 ascb

var _loader:Loader = new Loader();

function BitmapLoader() {
    _loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
    _loader.load(new URLRequest("img1.JPG"));
}

function onComplete(event:Event):void {
    var image:Bitmap = Bitmap(_loader.content);
    var bitmap:BitmapData = image.bitmapData;
    addChild(image);
}