// remove the registerOverlay call to disable the controlbar
   hs.registerOverlay(
      {
         thumbnailId: null,
         overlayId: 'controlbar',
         position: 'top right',
         hideOnMouseOut: true
      }
   );

    hs.graphicsDir = 'highslide/graphics/';
    hs.outlineType = 'rounded-white';
    // Tell Highslide to use the thumbnail's title for captions
    hs.captionEval = 'this.thumb.title';
    hs.outlineWhileAnimating = true;