Tomahawk Tree2 Javascript problem.

[Long Tran]

All, I've created a TreeModel and successfully rendered it on the browser, however, when I click on the expand/collapse button, it's not working. Apparently, in the HTML page generated, _javascript_ function "treeNavClick" was not generated, is there any tag/attribute i need to add to the Tree2 component? Hers is my Jsp: <f:view> <t:tree2 id="myTree" showNav="true" rendered="#{LovBackingBean.lovTree!=null}" showRootNode="false" var="node" value="#{LovBackingBean.lovTree}" varNodeToggler="t">     <f:facet name="rootNode">       <h:panelGroup>                 <h:outputText value="#{node.description}"/>       </h:panelGroup>    </f:facet>    <f:facet name="topNode">       <h:panelGroup>                 <h:outputText value="#{node.description}"/>       </h:panelGroup>    </f:facet>    <f:facet name="childNode">       <h:panelGroup>                 <h:outputText value="#{node.description}"/>       </h:panelGroup>    </f:facet> </t:tree2> </f:view>