docs: function MenuItemImage (opts) {
      var normalI   = opts.normalImage,
          selectedI = opts.selectedImage,
          disabledI = opts.disabledImage,
          callback  = opts.callback
  
      var normalImage = new Sprite({file: normalI}),
          selectedImage = new Sprite({file: selectedI}),
          disabledImage = null
  
      if (disabledI) {
          disabledImage = new Sprite({file: disabledI})
      }
  
      MenuItemImage.superclass.constructor.call(this, {normalImage: normalImage, selectedImage: selectedImage, disabledImage: disabledImage, callback: callback})
  }