Balls visible in other "pages" of app after "drag n drop" game. Help plz!

Question

After modifying code from a tutoial I've got the drag n drop game part of my educational project app working beautifully.
The unfortunate thing is that If I hit the home button that is common to all the "pages" in my app to move away from the game, the balls that have been dropped into the correct position remain visible on the stage in ALL other pages.
I'm guessing this is because the AS code removes the event listener so once dragged to the correct postion in the game, they snap there and cannot be moved.
Am I right?
How can I solve the problem of the dropped balls being visible on other "pages"
Thanks in advance and heres the code on that particular page of the app.
var counter:Number = 0;
var startX:Number;
var startY:Number;
peg1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg4_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg4_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg5_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg5_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg6_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg6_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg7_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg7_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg8_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg8_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg9_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg9_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg10_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg10_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg11_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg11_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg12_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg12_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
function pickUp(event:MouseEvent):void {
    event.target.startDrag(true);
    reply_txt.text = "";
    event.target.parent.addChild(event.target);
    startX = event.target.x;
    startY = event.target.y;
function dropIt(event:MouseEvent):void {
    event.target.stopDrag();
    var myTargetName:String = "target" + event.target.name;
    var myTarget:DisplayObject = getChildByName(myTargetName);
    if (event.target.dropTarget != null && event.target.dropTarget.parent == myTarget){
        reply_txt.text = "Good Job!";
        event.target.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);
        event.target.removeEventListener(MouseEvent.MOUSE_UP, dropIt);
        event.target.buttonMode = false;
        event.target.x = myTarget.x;
        event.target.y = myTarget.y;
        counter++;
    } else {
        reply_txt.text = "Try Again!";
        event.target.x = startX;
        event.target.y = startY;
    if(counter == 12){
        reply_txt.text = "Congrats, you're finished!";
peg1_mc.buttonMode = true;
peg2_mc.buttonMode = true;
peg3_mc.buttonMode = true;
peg4_mc.buttonMode = true;
peg5_mc.buttonMode = true;
peg6_mc.buttonMode = true;
peg7_mc.buttonMode = true;
peg8_mc.buttonMode = true;
peg9_mc.buttonMode = true;
peg10_mc.buttonMode = true;
peg11_mc.buttonMode = true;
peg12_mc.buttonMode = true;

Answer 1

Sorry, I'm a bit confused by that.
You said add code to frame 1? Frame 1 is my home section. Do you mean copy/paste your code there? Frame 1 currently looks like this:
stop();
learn_btn.addEventListener(MouseEvent.CLICK, learnClicked);
function learnClicked(event:MouseEvent):void
SoundMixer.stopAll();
gotoAndStop("learn")
play_btn.addEventListener(MouseEvent.CLICK, playClicked);
function playClicked(event:MouseEvent):void
SoundMixer.stopAll();
gotoAndStop("play")
test_btn.addEventListener(MouseEvent.CLICK, testClicked);
function testClicked(event:MouseEvent):void
SoundMixer.stopAll();
gotoAndStop("test")
home_btn.addEventListener(MouseEvent.CLICK, homeClicked);
function homeClicked(event:MouseEvent):void
SoundMixer.stopAll();
for(var i:uint=0;i<reparentedBalls.length;i++){
if(reparentedBalls[i]!=null){
reparentedBalls[i].parent.removeChild(reparentedBalls[i]);
gotoAndStop("home")
The other bit of relevant code is on frame 42 which currently looks like this:
var counter:Number = 0;
var startX:Number;
var startY:Number;
var reparentedBalls:Array=[];
peg1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg4_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg4_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg5_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg5_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg6_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg6_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg7_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg7_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg8_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg8_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg9_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg9_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg10_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg10_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg11_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg11_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
peg12_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
peg12_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
function pickUp(event:MouseEvent):void {
    event.target.startDrag(true);
    reply_txt.text = "";
    event.target.parent.addChild(event.target);
reparentedBalls.push(event.target);
    startX = event.target.x;
    startY = event.target.y;
function dropIt(event:MouseEvent):void {
    event.target.stopDrag();
    var myTargetName:String = "target" + event.target.name;
    var myTarget:DisplayObject = getChildByName(myTargetName);
    if (event.target.dropTarget != null && event.target.dropTarget.parent == myTarget){
        reply_txt.text = "Good Job!";
        event.target.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);
        event.target.removeEventListener(MouseEvent.MOUSE_UP, dropIt);
        event.target.buttonMode = false;
        event.target.x = myTarget.x;
        event.target.y = myTarget.y;
        counter++;
    } else {
        reply_txt.text = "Try Again!";
        event.target.x = startX;
        event.target.y = startY;
    if(counter == 12){
        reply_txt.text = "Congrats, you're finished!";
peg1_mc.buttonMode = true;
peg2_mc.buttonMode = true;
peg3_mc.buttonMode = true;
peg4_mc.buttonMode = true;
peg5_mc.buttonMode = true;
peg6_mc.buttonMode = true;
peg7_mc.buttonMode = true;
peg8_mc.buttonMode = true;
peg9_mc.buttonMode = true;
peg10_mc.buttonMode = true;
peg11_mc.buttonMode = true;
peg12_mc.buttonMode = true;
Are you telling me to change the 4th line to reparentedBalls=[]; or var reparentedBalls=[];