private function enableMouseActions(){
        mClip_mc.onRelease = Delegate.create(this,onRelease);
        mClip_mc.onPress = Delegate.create(this,onPress);
        mClip_mc.onRollOver = Delegate.create(this,onRollOver);
        mClip_mc.onRollOut = Delegate.create(this,onRollOut);    
        mClip_mc.onDragOut = Delegate.create(this,onDragOut);
        mClip_mc._alpha = 50;
        mClip_mc.useHandCursor = false;    
    }
        
    
    private function onRelease(){
        if (mSelected ) return;
        mBase_mc._x -= Options.thumbnailClickShift;
        mBase_mc._y -= Options.thumbnailClickShift;
        mThumbArea.selectedThumbIndex =  mIndex;        
    }
        
    private function onPress(){
        if (mSelected ) return;
        mBase_mc._x += Options.thumbnailClickShift;
        mBase_mc._y += Options.thumbnailClickShift;    
        mClip_mc._alpha = 100;
    }
    
    private function onRollOver(){
        if (mSelected ) return;            
        mFrameTwn.continueTo(Options.thumbnailRollOverFrameWidth,sFrameTweenLen);    
        mClip_mc._alpha = 100;
    }
    
    private function onRollOut(){
        if (mSelected ) return;
        mFrameTwn.continueTo(Options.thumbnailFrameWidth,sFrameTweenLen);    
        mClip_mc._alpha = 50;
    }
    
    private function onDragOut(){
        if (mSelected ) return;
        onRollOut();
        onRelease();    
    }