Rich:tree - Event onkey* not fired on Firefox

[pitit_poussin]

Hello,

I have an issue with the properties onkey[up/down/press] on a rich:tree. I have a simple rich:tree and I display an alert ‘test’ :

<h:form>
     <rich:tree value="#{pageDeTestAction.getOptionTreeNode()}" id="tree1" var="station" adviseNodeOpened="#{gestionDetailCommandeTreeAction.nodeOpened}" onkeyup="alert('test')">
          <rich:treeNode>
               <h:outputText value="#{station}" />
          </rich:treeNode>
     </rich:tree>
</h:form>

The alert is displayed on Internet Explorer but this is not work on Firefox.

Any idea to resolve this ?

Thank

PS : I use RichFaces 3.3.2