Loading External Images Causes Memory Leak

Question

I have been working on an Actionscript 2.0 project that basically loads external images.
Everytime i load and unload a new image, memory increases to 1 or 2 MBs
If all the images are in cache, then it increased to 4 or 8 KBs
In the unloading of images, I have removed loader and the container of the image.
Any thoughts why it is behaving like that?
Please find the sample code snippet below.
btn_load.onRelease = function()
loadImage();
btn_unLoad.onRelease = function()
unLoadImage();
var mcListener:Object = new Object();
var container1:MovieClip;
var mcLoader:MovieClipLoader;
var loader_reference = this;
var n=0;
function loadImage(){
var image_arr = ["http://xyz.com/image1.png","http://xyz.com/image2.png","http://xyz.com/image3.png","http:/ /xyz.com/image4.png","http://xyz.com/image5.png"];
var image_url = image_arr[n];
if(n==image_arr.length-1) {
  n=0;
}else{ 
  n++;
container1 = loader_reference.createEmptyMovieClip("container1", loader_reference.getNextHighestDepth());
mcLoader = new MovieClipLoader();
mcLoader.removeListener(mcListener);
mcLoader.addListener(mcListener);
mcListener.onLoadComplete = function(target_mc:MovieClip, httpStatus:Number):Void {
mcListener.onLoadInit = function(target_mc:MovieClip):Void {
  target_mc._x = 300;
  target_mc._y = 200;
  target_mc._width = 300;
  target_mc._height = 250;
mcLoader.loadClip(image_url, container1);
function unLoadImage(){
  mcLoader.unloadClip(container1);
  mcLoader = null;
  container1 = null;
  removeMovieClip(loader_reference.container1);
Thanks in advance.

Answer 1

that code should only execute once.  fix that.