Circlemenu öffnet nicht auf iPad?

[dadoc]

Hi,
folgendes Circlemenu öffnet bei mir korrekt in Firefox & Co., aber nicht auf dem iPad:

Code Auswählen Erweitern

<li data-row="1" data-col="9" data-sizex="2" data-sizey="3" class="semitransparent">
<header class="large semitransparent">TIMER</header>
<div class="top-space-2x large">
   <div data-type="circlemenu" class="circlemenu ">
<ul>
<li><div data-type="push" data-icon="fa-clock-o"></div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 60" data-icon="">1</div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 180" data-icon="">3</div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 300" data-icon="">5</div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 600" data-icon="">10</div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 1200" data-icon="">20</div></li>
<li><div data-type="push" data-device="Gardena_Ventil" data-set-on="on-for-timer 1800" data-icon="">30</div></li>
</ul>
</div>
<div class="cell top-space-2x">
Timer
</div>
</div>
</li>
Normal oder habe ich da einen Fehler drin?
Grüße
Martin