li class="video-part-link" data-start="111" data-end="138">
          Slow-motion mode 
          <small>(1:51-2:19)</small>
        </li>
        <li class="video-part-link" data-start="139" data-end="190">
          Manual step-by-step execution 
          <small>(2:19-3:10)</small>
        </li>
      </ul>

      <iframe id="video-demo-iframe" width="640" height="302" 
        style="width: 640px;"
        src="https://www.youtube.com/embed/eTq9T_sPTYQ?rel=0&amp;enablejsapi=1"
        frameborder="0" al