<li><button id="ctdl-ungoto-button" style="display:none" onClick="gotonext(0);">ungoto</button></li>
<li><button id="ctdl-skip-button" style="display:none" onClick="gotonext(1);">skip</button></li>
<li><button id="ctdl-goto-button" style="display:none" onClick="gotonext(2);">goto</button></li>
<li><button id="ctdl-ungoto-button" style="display:none" onClick="gotonext(0);">ungoto</button></li>
<li><button id="ctdl-skip-button" style="display:none" onClick="gotonext(1);">skip</button></li>
<li><button id="ctdl-goto-button" style="display:none" onClick="gotonext(2);">goto</button></li>