title: Two <p:confirmDialog> in one xhtml
body: <p>I have two  in one xhtml. But both of them are not working properly.
  When I click the Save button, the confirmDialog of the Import button came up.
  When I click the Import button, nothing came up.
  Is there anything that I have missed out?</p>
  
  <pre><code>               &lt;td&gt;&lt;p:commandButton type="button"
                   value="Save" id="cr1002_command_save"
                   onclick="confirmation.show()" ajax="false"
                   style="width: 80px;height: 24px"&gt;
                &lt;/p:commandButton&gt; &lt;p:confirmDialog id="confirmDialog"
                   message="#{msg.cr1002_prompt_confirm_save}" severity="alert"
                   widgetVar="confirmation" style="width: 70px;height: 27px"&gt;
                   &lt;p:commandButton id="confirm" value="OK"
                      oncomplete="confirmation.hide()"
                      action="#{pc_Cr1002.doCr1002_command_saveAction}" ajax="false"
                      style="width: 80px;height: 24px" /&gt;
                   &lt;p:commandButton id="decline" value="Cancel"
                      onclick="confirmation.hide()" type="button"
                      style="width: 80px;height: 24px" /&gt;
                &lt;/p:confirmDialog&gt;&lt;/td&gt;
             &lt;td&gt;&lt;/td&gt;
             &lt;td&gt;&lt;p:commandButton type="button"
                   value="Import"
                   onclick="gowait('form1:cr1002_command_import')"
                   id="cr1002_command_import" ajax="false"
                   style="width: 80px;height: 24px"&gt;&lt;/p:commandButton&gt;
                    &lt;p:confirmDialog id="confirmDialog2"
                   message="Importing... Importing..." severity="alert"
                   widgetVar="confirmation" style="width: 70px;height: 27px"&gt;
                   &lt;p:commandButton id="confirm2" value="OK"
                      oncomplete="confirmation.hide()"
                      action="#{pc_Cr1002.doCr1002_command_importAction}" ajax="false"
                      style="width: 80px;height: 24px" /&gt;
                   &lt;p:commandButton id="decline2" value="Cancel"
                      onclick="confirmation.hide()" type="button"
                      style="width: 80px;height: 24px" /&gt;
                &lt;/p:confirmDialog&gt;
             &lt;/td&gt;
  </code></pre>