Hi, I have this code:

<h:form prependId="true" id="form">
 <label for="finstituicao">Nome da Instituição:</label>
 <h:inputText id="finstituicao"
 value="#{instituicaoController.instituicao.nome}"
 onkeypress="return entsub(event)" />
 <a4j:commandButton value="Procurar" id="search"
 action="#{instituicaoController.findInstituicoes }"
 reRender="tinstituicoes" />
 <h:dataTable id="tinstituicoes"
 value="#{instituicaoController.instituicoes}" var="instituicaov" summary="Instituições">
 <h:column>
 <f:facet name="header">
 <h:outputText value="#{instituicaoController.nome}" />
 </f:facet>
 <h:outputText value="#{instituicaov.nome}" />
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="#{instituicaoController.sigla}" />
 </f:facet>
 <h:outputText value="#{instituicaov.sigla}" />
 </h:column>
 <h:column>
 <a4j:commandLink reRender="instituicao" value="Selecionar"
 oncomplete="windowClose('paneli')">
 <f:setPropertyActionListener
 target="#{instituicaoController.instituicao}"
 value="#{instituicaov}" />
 </a4j:commandLink>
 </h:column>
 </h:dataTable>
 <h:outputLink value="javascript:Richfaces.showModalPanel('ninstituicao')">Cadastrar Nova</h:outputLink>
</h:form>

The commandLinks in the dataTable don't work. They don't call any method that I put in the action attribute.
If I remove the commandButton and inputText and populate the list for the dataTable, the commandLinks works perfectly, but I need this to perform searchs.
I think this error occurs because the form is submited more times, then I need a way to reRender the dataTable when the user input a text to search without submit. I tried to separate the commandLink and commandButton in differente forms, but don't work.

Thanks...