I've been struggling with this: How do you show a rich:Panel if the page has hit errors? Here's the pertinent code in my form; I hit the commandButton to activate the validation. The rich:messages display fine outside of the outputPanel, but the rich:panel doesn't show at all:
<a4j:outputPanel rendered="#{facesContext.maximumSeverity == null ? 'false' : 'true'}" id="errors">
<rich:panel >
<f:facet name="header">
The following errors occurred on the page:
</f:facet>
<rich:messages />
</rich:panel>
</a4j:outputPanel>
<a4j:commandButton action="#{utilities.sendEmail('/pages/media-request/mail.xhtml')}" type="submit" value="Submit"
reRender="errors" eventsQueue="foo" id="btnSubmit" />
