Problems with removechild

programming flash
1

I wonder if someone can help me with removeChild

i made a class preloadContent, it preloads content :wink:

but when i want to load the next external image or swf he doesn’t remove the old content, can someone help me with that, its a reocuring problem for me i dont understand the removechild stuff.

this is my class:

package
{
    import gs.*;
    import gs.easing.*;
    import flash.display.*;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.events.*;
    import flash.net.*;

    
    public class PreloadContent extends MovieClip
    { 
        public var main;
        public var xmlmenu;
        public var imageLoader:Loader;
        
        public var container;
        public var placeholder;
        public var changeSize;
        public var url;
        
        public var firstTime:Boolean = true;
        
        public var hoog;
        public var breed;
        
        
        public function PreloadContent(mainClass, container, placeholder, changeSize):void
        {
            this.main = mainClass;
            this.container = container;
            this.placeholder = placeholder;
            
            this.changeSize = changeSize;
        }
        
        public function preloadContent(contentUrl, hoog, breed):void
        {
            
            this.url = contentUrl;
            // Show Preloader
            this.placeholder.preloader.visible = true;
            
            this.hoog = hoog;
            this.breed = breed;
            
            // Set properties on my Loader object
            imageLoader = new Loader();
            imageLoader.load(new URLRequest(url));
            imageLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, imageLoading);
            imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, imageLoaded);
        }
        
        public function imageLoaded(e:Event):void {
        
            // Hide Preloader
            this.placeholder.preloader.visible = false;

            this.changeSize.changeSize(this.hoog, this.breed);
            
            // The container animation takes 1 seconde so wait until the animation is done and then load the image
            TweenLite.to(this.container, 1, {onComplete:placeContent});
        }
        
        public function placeContent():void
        {
        
            // remove content
            if (firstTime == false)
            {
                this.placeholder.imageLoadArea.removeChild(imageLoader);
            }
            // Load Content
            this.placeholder.imageLoadArea.addChild(imageLoader);
            trace(image);
            
            firstTime = false;
        }
    
        public function imageLoading(e:ProgressEvent):void {
            // Get current download progress
            var loaded:Number = e.bytesLoaded / e.bytesTotal;
            
            // Send progress info to "preloader" movie clip
            this.placeholder.preloader.SetProgress(loaded);
        }
    }
}