Hi,
I'm using the a4j:commandLink tag for reRender one div like that:
<t:div id="div_user"> <f:verbatim> <table id="user_edit_select_pwd"> <tr> <td align="center"> hello| </td> </tr> </table> </f:verbatim> <h:panelGroup> <t:graphicImage value="images/warning-icon.gif"/> </h:panelGroup> </t:div>