Event listener

Hi,

I have imported 5 images to my mc using “for loop” and have add an event listener for loading complete. I can able to know, in which movie clip it is complete. the code is below:

    for (var a:Number=0; a<arr.length; a++) {
        var tmc:MovieClip=new MovieClip();
        thumbMc.addChild(tmc);
        tmc.name="thumbmc"+a;
        var loader:Loader = new Loader();
        loader.contentLoaderInfo.addEventListener(Event.COMPLETE, thumbnail_load);
        function thumbnail_load(e:Event):void {
                    trace(e.target.loader.parent.name)
        }
        loader.load(new URLRequest(arr[a][1]));
        tmc.addChild(loader);
}

Now I need to know is, the name of the image which is loaded for each and every loading.

can any one help me out of this?