public function renderShowDetail($id)
    {
        if ($id == NULL)
        {
            $form = $this['detailPersonForm'];
            $form['delete']->setDisabled(TRUE);
            $form->addSubmit('save', 'Save')
                    ->onClick[] = array($this, 'detailPersonFormSubmittedSave');
            Debug::log('ShowDetailForm (SAVE) loaded.', Debug::DEBUG);
        }
        else
        {
            $EID = $id;
            $person = $this->personRepository->find($EID);
            $formDefaults = array();
            $formDefaults['EID'] = $person->ID;
            $formDefaults['Surname'] = $person->Surname;
            $formDefaults['Name'] = $person->Firstname;
            $formDefaults['Group_ID'] = $person->GroupID;
            $formDefaults['CostCenter'] = $person->CostCenterID;
            $form = $this['detailPersonForm'];
            $form['EID']->setAttribute('readonly', 'readonly');
            $form->addSubmit('save', 'Save')
                    ->onClick[] = array($this, 'detailPersonFormSubmittedUpdate');
            $form->setDefaults($formDefaults);
            Debug::log('ShowDetailForm (UPDATE) loaded.', Debug::DEBUG);
        }
        $this->template->form = $form;
    }