anchor.diff:       * frame.  To do that, just don't add anything to the index.
        */
       debug("Snapped the display to the nearest frame");
  -    if(add == +1)
  +    if(add === +1)
         add = 0;
     }
   
  
positive.code:   if(right)
    {
      var post_idx_to_populate = this.posts_populated[1];
      if(post_idx_to_populate == this.post_ids.length)
        return false;
      ++this.posts_populated[1];
  
  
negative.code:    * Fall back on special-casing individual iOS devices.
     */
    this.config = { };
    if(navigator.userAgent.indexOf("iPad") !== -1)
    {
      this.config.thumb_scale = 1.0;
    }
    else if(navigator.userAgent.indexOf("iPhone") !== -1 || navigator.userAgent.indexOf("iPod") !== -1)
    {
      this.config.thumb_scale = 0.5;
    }
    else if(navigator.userAgent.indexOf("Android") !== -1)
    {
      /* We may be in landscape or portrait; use out the narrower dimension. */
      var width = Math.min(window.innerWidth, window.innerHeight);
  