Loading multiple swf's with the same Loader obj

1

Let’s assume that i have btn1, btn2 and btn3 inside a container mc on stage.
clickin’ on these btns i want to load a single swf for btn1 and 2 and clicking on btn3 i want to load 2 or more swf’s at the same time.
i have created an Array that contains the string values for the URL Requests and the function onClick()
in this function if i click on btn3 a for loop needs to create multiple instances of the loader object in order to load multiple files at the same time.
OK.
now my problem is: while when i toggle between btn1 and btn2 the new content .swf updates the old one leaving only one .swf on the stage (which is what i want!), when multiple swf’s are loaded then only one of them is removed from the stage when new content is loaded in, leaving some swf’s on stage and i don’t know how to remove them.

i think this is because i have created multiple instances of the loader object in the loop, but i don’t know how to target them in order to remove them from the stage when new swf’s are loaded.

here 's the code, any clue?


    var XInitpos:Number = 0;
    var Xpos:Number = 100;
    var p1:String = "rollMenu2.swf";
    var p2:String = "rollMenu3.swf";
    var p3:String = "rollMenu4.swf";
    var a:Array = new Array(p2, p3);
    var loader:Loader = new Loader();

    var scrollContainer:Sprite = new Sprite();

    stage.addChild(scrollContainer);


    container.addEventListener(MouseEvent.CLICK, onClick);



    function onClick(event:MouseEvent):void {
          trace(loaderArray);

       if (event.target == container.btn1) {
          trace("btn1 clicked.");
          loader.load(new URLRequest("particles3.swf"));
          addChild(loader);
          loader.scaleX = .5;
          loader.scaleY = .5;
          loader.x = XInitpos;
          //scrollContainer.removeChild(loaderArray[1]);
       }
       if (event.target == container.btn2) {
          trace("btn2 clicked. go on!!!");
          loader.load(new URLRequest("particles2.swf"));
          addChild(loader);
          loader.scaleX = .5;
          loader.scaleY = .5;
          loader.x = XInitpos;
       }
       if (event.target == container.btn3) {
          for (var i:uint = 0; i < a.length; i++) {
             loader = new Loader();
             loader.load(new URLRequest(a*));
             scrollContainer.addChild(loader);
             loader.x = XInitpos;
             XInitpos += 200;
          }
       }
    }