function CMenu(){
    var _pStartPosPlay;
    var _pStartPosChallenge;
    var _pStartPosAudio;
    var _pStartPosInfo;
    var _pStartPosFullscreen;
    
    var _oBg;
    var _oButPlay;
    var _oButPlayChallenge;
    var _oAudioToggle;
    var _oFade;
    var _oButInfo;
    var _oButFullscreen;
    var _fRequestFullScreen = null;
    var _fCancelFullScreen = null;
    
    
    this._init = function(){
        _oBg = createBitmap(s_oSpriteLibrary.getSprite('bg_menu'));
        s_oStage.addChild(_oBg);

        _pStartPosPlay = {x:(CANVAS_WIDTH/2),y:CANVAS_HEIGHT -70};
        var oSprite = s_oSpriteLibrary.getSprite('but_play');
        _oButPlay = new CTextButton(_pStartPosPlay.x,_pStartPosPlay.y,oSprite,TEXT_PLAY,FONT_GAME,"#ffffff",30,s_oStage);
        _oButPlay.addEventListener(ON_MOUSE_UP, this._onButPlay, this, false);
        
        //_pStartPosChallenge = {x:(CANVAS_WIDTH/2 + 170),y:CANVAS_HEIGHT -70};
        //_oButPlayChallenge = new CTextButton(_pStartPosChallenge.x,_pStartPosChallenge.y,oSprite,TEXT_PLAYCHALLENGE,FONT_GAME,"#ffffff",30,s_oStage);
        //_oButPlayChallenge.addEventListener(ON_MOUSE_UP, this._onButPlayChallenge, this);

        
        if(DISABLE_SOUND_MOBILE === false || s_bMobile === false){
             var oSprite = s_oSpriteLibrary.getSprite('audio_icon');
            _pStartPosAudio = {x: CANVAS_WIDTH - (oSprite.width/4) - 10, y: (oSprite.height/2) + 10};   
            _oAudioToggle = new CToggle(_pStartPosAudio.x,_pStartPosAudio.y,oSprite,s_oStage);
            _oAudioToggle.addEventListener(ON_MOUSE_UP, this._onAudioToggle, this);
        }
        
        if(SHOW_CREDITS){
                var oSprite = s_oSpriteLibrary.getSprite('but_credits');
                _pStartPosInfo = {x: (oSprite.height/2) + 10, y: (oSprite.height/2) + 10}; 
                _oButInfo = new CGfxButton(_pStartPosInfo.x,_pStartPosInfo.y,oSprite,s_oStage);
                _oButInfo.addEventListener(ON_MOUSE_UP, this._onCredits, this);
                
                oSprite = s_oSpriteLibrary.getSprite('but_fullscreen');
                _pStartPosFullscreen =  {x: _pStartPosInfo.x + (oSprite.width / 2) + 10, y: _pStartPosInfo.y};
        }else{
            oSprite = s_oSpriteLibrary.getSprite('but_fullscreen');
            _pStartPosFullscreen =  {x: (oSprite.width/2) + 10, y: (oSprite.height/2) + 10}; 
        }
        
        var doc = window.document;
        var docEl = doc.documentElement;
        _fRequestFullScreen = docEl.requestFullscreen || docEl.mozRequestFullScreen || docEl.webkitRequestFullScreen || docEl.msRequestFullscreen;
        _fCancelFullScreen = doc.exitFullscreen || doc.mozCancelFullScreen || doc.webkitExitFullscreen || doc.msExitFullscreen;
        
        if(ENABLE_FULLSCREEN === false){
            _fRequestFullScreen = false;
        }
        
        if (_fRequestFullScreen && screenfull.enabled){
            _oButFullscreen = new CToggle(_pStartPosFullscreen.x,_pStartPosFullscreen.y,oSprite,s_bFullscreen,s_oStage);
            _oButFullscreen.addEventListener(ON_MOUSE_UP, this._onFullscreenRelease, this);
        }
        
        
        _oFade = new createjs.Shape();
        _oFade.graphics.beginFill("black").drawRect(0,0,CANVAS_WIDTH,CANVAS_HEIGHT);
        
        s_oStage.addChild(_oFade);
        
        createjs.Tween.get(_oFade).to({alpha:0}, 1000).call(function(){_oFade.visible = false;});  
        
        this.refreshButtonPos (s_iOffsetX,s_iOffsetY);
    };
    
    this.unload = function(){
        _oButPlay.unload(); 
        _oButPlay = null;
        
        if(SHOW_CREDITS){
                _oButInfo.unload();
        }
        
        if (_fRequestFullScreen && screenfull.enabled){
            _oButFullscreen.unload();
        }
        
        //_oButPlayChallenge.unload();
        //_oButPlayChallenge = null;
        
        if(DISABLE_SOUND_MOBILE === false || s_bMobile === false){
            _oAudioToggle.unload();
            _oAudioToggle = null;
        }
        
        s_oStage.removeAllChildren();
        
        s_oMenu = null;
    };
    
    this.refreshButtonPos = function(iNewX,iNewY){
        if(DISABLE_SOUND_MOBILE === false || s_bMobile === false){
            _oAudioToggle.setPosition(_pStartPosAudio.x - iNewX,iNewY + _pStartPosAudio.y);
        }
        
        if (_fRequestFullScreen && screenfull.enabled){
            _oButFullscreen.setPosition(_pStartPosFullscreen.x + s_iOffsetX,_pStartPosFullscreen.y + s_iOffsetY);
        }
        
        _oButPlay.setPosition(_pStartPosPlay.x,_pStartPosPlay.y - iNewY);
        //_oButPlayChallenge.setPosition(_pStartPosChallenge.x,_pStartPosChallenge.y - iNewY);
		
		if(SHOW_CREDITS){
			_oButInfo.setPosition(_pStartPosInfo.x + iNewX,iNewY + _pStartPosInfo.y);
		}
    };
    
    this._onButPlay = function(){
        this.unload();
        
        if (isIOS() && s_oSoundTrack === null) {
            s_oSoundTrack = playSound("soundtrack",1,true);
        }
        
        s_oMain.gotoGame(false);
        
        $(s_oMain).trigger("start_session");
    };

    this._onButPlayChallenge = function(){
        this.unload();
        
        if (isIOS() && s_oSoundTrack === null) {
            s_oSoundTrack = playSound("soundtrack",1,true);
        }
            
        s_oMain.gotoGame(true);
        
        $(s_oMain).trigger("start_session");
    };
    
    this._onCredits = function(){
        new CCreditsPanel();
    };

    this._onAudioToggle = function(){
        Howler.mute(s_bAudioActive);
        s_bAudioActive = !s_bAudioActive;
    };
    
    this.resetFullscreenBut = function(){
	if (_fRequestFullScreen && screenfull.enabled){
		_oButFullscreen.setActive(s_bFullscreen);
	}
    };


    this._onFullscreenRelease = function(){
        if(s_bFullscreen) { 
		_fCancelFullScreen.call(window.document);
	}else{
		_fRequestFullScreen.call(window.document.documentElement);
	}
	
	sizeHandler();

    };
    
    s_oMenu = this;
    
    this._init();
}

var s_oMenu = null;