Working with richfaces 4.x and i try to migrate a project from seam to JEE6 , i have that error when i inspect:

Uncaught ReferenceError: RichFaces is not defined accueil.jsf:150

onclick

that is my page code:

<a4j:region>

  <table class="leftLayout">

  <tr>

  <td><a4j:commandLink id="saisieEtpTauxButton"

  reRender="NoDispoInfo"

  action="#{selectBean.getAllItems()}"

  value="#{messages['taux']}"/>

  </td>

  </tr>

  </table>

  <hr />

  </a4j:region>

<rich:popupPanel id="NoDispoInfo" autosized="false" modal="true" style="width:300;height:100"

  showWhenRendered="#{!selectChoixBean.disponibleSection or !selectChoixBean.disponibleProduit or !selectChoixBean.disponibleGroupe}">

  <div align="center">

  <h:outputText value="Not disponible." />

  </div>

  <hr style="height:20px"/>

  <h:form style="text-align : right;">

  <center>

  <a4j:commandButton ajaxSingle="true" value="OK"

  action="#{selectBean.hideNonDispoInfo}"

  reRender="NoDispoInfo" />

  </center>

  </h:form>

  </rich:popupPanel>