A better way to do this -- add/remove multiple childs

Question

I have 6 movieClips on stage.  When I roll over any one of them, I want to:
A) removeChild the remaining 5 movieClips and then
B) bring a new movieClip onto stage that would hold a description and possible button links
Upon rollOut, I want to fire a 3 second delay, removeChild the description movieClip and then addChild the original 5 (removed) movieClips.
Make sense?
I started typing away and came to the impression that I might be going about this the LONG way.  Any shorter/smarter ideas would be appreciated.
Here's the code:
package{
    import flash.display.*;
    import flash.events.*;
    public class mainAS extends MovieClip{
        public var backgroundImage:imageMap2_mc = new imageMap2_mc();
        public var holder1:holder_mc = new holder_mc();
        public var holder2:holder_mc = new holder_mc();
        public var holder3:holder_mc = new holder_mc();
        public var holder4:holder_mc = new holder_mc();
        public var holder5:holder_mc = new holder_mc();
        public var holder6:holder_mc = new holder_mc();
        public function mainAS():void{
            //background image
            backgroundImage.x = 0;
            backgroundImage.y = 0;
            addChild(backgroundImage);
            // holder 1
            holder1.x = 50;
            holder1.y = 30;
            addChild(holder1);
            holder1.addEventListener(MouseEvent.ROLL_OVER, holder1Fire)
            // holder 2
            holder2.x = 250;
            holder2.y = 30;
            addChild(holder2);
            holder2.addEventListener(MouseEvent.ROLL_OVER, holder2Fire)
            // holder 3
            holder3.x = 450;
            holder3.y = 30;
            addChild(holder3);
            holder3.addEventListener(MouseEvent.ROLL_OVER, holder3Fire)
            // holder 4
            holder4.x = 50;
            holder4.y = 225;
            addChild(holder4);
            holder4.addEventListener(MouseEvent.ROLL_OVER, holder4Fire)
            // holder 5
            holder5.x = 250;
            holder5.y = 225;
            addChild(holder5);
            holder5.addEventListener(MouseEvent.ROLL_OVER, holder5Fire)
            // holder 6
            holder6.x = 450;
            holder6.y = 225;
            addChild(holder6);
            holder6.addEventListener(MouseEvent.ROLL_OVER, holder6Fire)
        //Fire away
        private function holder1Fire(e:Event):void{
            trace("holder 1");
            //removeChild all remaining
           //addChild description MovieClip
          // description_mc.addEventListner(function to include rollOff Listener -- fire timer -- remove description + add original mc's)
        private function holder2Fire(e:Event):void{
            trace("holder 2");
            //removeChild
        private function holder3Fire(e:Event):void{
            trace("holder 3");
            //removeChild
        private function holder4Fire(e:Event):void{
            trace("holder 4");
            //removeChild
        private function holder5Fire(e:Event):void{
            trace("holder 5");
            //removeChild
        private function holder6Fire(e:Event):void{
            trace("holder 6");
            //removeChild

Answer 1

If the main reason for adding and removing is so that only one is visible, then you can just use the visible property along with a reduction in code.  Here's a few thoughts along those lines, though not the whole deal...
Create a function that turns all of the object visible/invisible using a loop...
function showAll(truefalse:Boolean){
     for(var i=1; i<7; i++){
          this["holder"+String(i)].visible = truefalse;
Then have all your object share the same rollover function....
holder1.addEventListener(MouseEvent.ROLL_OVER, clickHolder);
holder2.addEventListener(MouseEvent.ROLL_OVER, clickHolder);
holder3.addEventListener(MouseEvent.ROLL_OVER, clickHolder);
etc...
function clickHolder(evt:MouseEvent):void {
     showAll(false);  // hide all first
     evt.currentTarget.visible = true;  // show the one being hovered
     // store the name of the description mc with the clip and call it...
     this[evt.currentTarget.desc].visible = true;