hello,
I'd like to use onclick a4j:suport to outputPanel or panelGroup inside a column, the onclick event is never fired;
here a snippet code:

<rich:column styleClass="grid-expander">
<a4j:outputPanel id="row_expanded" layout="block" styleClass="#{list.displayUsers ? 'grid-expander-row-collapsed':'grid-expander-row-expanded'}" >
<a4j:support event="onclick" reRender="table">
<a4j:actionparam name="show_users" value="#{!list.displayUsers}"
assignTo="#{list.displayUsers}"></a4j:actionparam>
</a4j:support>
</a4j:outputPanel>
</rich:column>