3 Level menu issue in Oracle Webcenter Portal

Hi,

   I am having issues with 3 level menu in Oracle webcenter portal. I have created a task flow based on the code given below. The code is building 3 level menu and showing correct hierarchy. But parent nodes are not clickable and can not navigate to desired page. Any help is greatly appreciated.

ADF Code of 3 Level navigation menu:

<af:panelGroupLayout id="pgl1" layout="vertical">

  <af:spacer id="sp1" height="20px"/>

  <af:menuBar id="mb1">

    <af:iterator id="i1"

                 value="#{navigationContext.currentNavigationModel.listModel['startNode=/,

                       includeStartNode=false']}"

                 var="node">

      <af:switcher id="s1"

                   facetName="#{empty node.children ? 'leafNode' : 'parentNode'}">

        <f:facet name="parentNode">