Hello,
There is a style which adds an arrow icon alongisde each parent item. JavaScript is then used to expand an contract the layers. An example of this is:
<janet:Menu id="Menu" runat="server" omithome="false" style="arrows" indent=" " icons="true" options="hideinitial=True">
Let me know if this resolves your issue. I am wondering whether you needed one of the other menu display styles, with the above actions.
Neil