Remove child bitmap

1

i am creating images by loading in thumbnails and creating a bitmap of each form the press of a navigation button. however i cant seem to remove child of the previous button pressed. you can see thge example here
http://2020proj.com/client/template1/index_AS3.html
any help will be appreciated
thank you


function loadImage():void 
{
    var loader:Loader = new Loader();
    var urlRequest:URLRequest = new URLRequest(imageURLs[loadedImages]);
    loader.load(urlRequest);
    loader.contentLoaderInfo.addEventListener(Event.COMPLETE, imageLoaded);
}

function imageLoaded(e:Event):void 
{
    for (var m:int = 0; m < parsedObject.item[2].issue.length; m++) 
    {
        var imageHolder:MovieClip = new MovieClip();
        imageHolder.x = m * 10; imageHolder.y = 10;
        addChild(imageHolder);
    }

    var image:Bitmap = (Bitmap)(e.target.content);
    var holder:MovieClip = someArray[loadedImages];
    holder.addChild(image);
    loadedImages++;
         
    if ( loadedImages < someArray.length ) 
    {
        loadImage();
    }
}