x:inputDate hell (MyFaces 1.0.9)

[Rafael Nami]

Hi everyone.
I was trying to put a x:inputDate with popupCalendar in my application, but mozilla is complaining about this:
"Erro: jscalendarSetImageDirectory is not defined Arquivo-fonte: http://localhost:8080/sigweb/AbrirChamado.faces Linha: 225".
"Erro: jscalendarPopUpCalendarForInputDate is not defined"
And the pretty popup isn't working.

And here's the code (there's nothing unusual, I guess):
<x:inputDate type="both" popupCalendar="true"
                                            id="fielddtaHraLimiteSolucao"
                                            value="#{pc_Chamado.chamado.dtaHraLimiteSolucao}"
                                            required="false" />

How can I set this jscalendarSetImageDirectory????

Thanks in advance

Rafael Mauricio Nami