popup onclick event not functioning?

[Jonathan Sutherland]

I am trying to impelment the popup with the onclick event. The default 
implementation (onmouseover) works but when I try to change it to onclick 
the onmouseover continues to function and the onlick doesn't.

           <x:popup id="x"
               onclick="true"
               styleClass="popup"
               closePopupOnExitingElement="true"
               closePopupOnExitingPopup="true"
               displayAtDistanceX="10"
               displayAtDistanceY="10">
               <h:outputText id="ox" value="Sample texts."/>
               <f:facet name="popup">
                   <h:panelGroup>
                       <h:panelGrid columns="1" >
                       <h:outputText value="Popup Text Box Test"/>
                       </h:panelGrid>
                   </h:panelGroup>
               </f:facet>
           </x:popup>
Any help gratefully acepted.

Johnny Sutherland