fix bug that allowed only one video in the shadowbox per page

  } else {

    // reset the size in case the user adjusted the window since last play

    youTubePlayer.setSize(videoWidth, videoHeight);

    // if a video different from the one already playing was requested, cue it up

    if (videoId != youTubePlayer.getVideoUrl().split('?v=')[1]) {

      youTubePlayer.cueVideoById(videoId);

    }

    youTubePlayer.playVideo();

  }

}