help with making a back button

hi

in a game im making i have a start menu that then when you click play goes to the game after playing the game, when you die a game over screen appears with a play again button in it i want to put a back button to go to the first frame.

the way this is set up is that the game over menue is a movie clip with the play again button in it i want to have a back movie clip to make it go to the first frame

gotoAndStop(1) dosent seem to work or mabye i am doing it wrong

this my game class file as the game over menu does not have a class file:

package com.alienattack{

          import flash.display.MovieClip;

          import flash.events.Event;

          import flash.utils.Timer;

          import flash.text.TextField;

          import flash.text.TextFormat;

          import flash.display.Stage;

          public class Game extends MovieClip          {

                    static var ship:MovieClip;

                    static var enemyShipTimer:Timer;

                    static var scoreText:TextField;

                    static var score:Number;

                    static var healthMeter:HealthMeter;

                    static var enemyHealthMeter:EnemyHealthMeter;

                    static var gameOverMenu:GameOverMenu;

                    static var powerUpTimer:Timer;

                    static var miniBossTimer:Timer;

                    static var RocketShipTimer:Timer;

                    var bossCountdown:Number;

                    static var Bombtimer:Timer;

                    private var _stage:Stage;

                    static var backgroundMusic = new BackgroundMusic();

                    var Bullet;

                    public function Game(){

                                 this.addEventListener(Event.ADDED_TO_STAGE,init);

                    }

                    function init(e:Event):void{

                              _stage=stage;

                              KeyClass.initialize(stage);

                              stage.focus = this;

                              ship = new Ship();

                              ship.x = 300;

                              ship.y = 150;

                              _stage.addChild(ship);

                              enemyShipTimer = new Timer(2000);

                              enemyShipTimer.addEventListener("timer", sendEnemy);

                              enemyShipTimer.start();

                              RocketShipTimer = new Timer(3500);

                              RocketShipTimer.addEventListener("timer", sendEnemyRocket);

                              RocketShipTimer.start();

                              resetScore();

                              gameOverMenu = new GameOverMenu();

                              gameOverMenu.x = 0;

                              gameOverMenu.y = 0;

                              addChild(gameOverMenu);

                              gameOverMenu.visible = false;

gameOverMenu.playAgainButton.addEventListener("mouseDown", newGame); (this is where i think the play again button is but how would i make it so it when to the first frame)

            backgroundMusic.play(0,1000);

                    }

                    static function gameOver()

                    {

                              gameOverMenu.visible = true;

                              enemyShipTimer.stop();

                              miniBossTimer.stop();

                              RocketShipTimer.stop();

                              Bombtimer.stop();

                              powerUpTimer.stop();

                              for (var i in EnemyShip.list)

                              {

                                        EnemyShip.list.kill();

                            }

                    }

                    function newGame(e:Event)

                    {

                              gameOverMenu.visible = false;

                              ship.visible = true;

                              ship.x = 300;

                              ship.y = 150;

                              ship.takeDamage(-ship.maxHealth);

                              ship.addEventListener("enterFrame", ship.move);

                              resetScore();

                              enemyShipTimer.start();

                              miniBossTimer.start();

                              RocketShipTimer.start();

                              Bombtimer.start();

                              powerUpTimer.start();

                    }