olumn">
                            <a4j:commandButton value="Show Details Below..."
                                               action="#{operationAction.selectOperationHistory(operationHistory.id)}"
                                               reRender="historiesPanel, historyDetailsPanel"
                                               styleClass="buttonsmall"/>
                        </rich:column>

                    </rich:columnGroup>
                </rich:dataTable>

                <ui:inclu