 
       @trigger 'sfx:play', 'button'
 
-      @animateThumbnails()
+      @animateThumbnails("-")
 
   next: (e) ->
     e.preventDefault()

  events: ->
    if ENV.mobile
      events =
        'touchend .back': 'back' 
        'touchend .previous': 'previous'
        'touchend .next': 'next'
        'touchend .play': 'play'
        'touchend canvas': 'select'
    else
      events =
        'click .back': 'back' 
        'click .previous': 'previous'
        'click .next': 'next'
        'click .play': 'play'

  back: (e) ->
    e.preventDefault()
    @undelegateEvents() # Prevent multiple clicks

    @trigger 'sfx:play', 'button'
    @trigger 'scene:change', 'difficulty'

