public function init() { parent::init(); $this->getElement('server_type_id')->setAttrib('disabled', 'disabled'); $submitElement = $this->getElement('submit'); $this->removeElement('submit'); $this->addSubForm(new Application_Form_ServerSettings(array('model' => $this->_model)), 'settings'); $submitElement->setLabel('Edit server'); $this->addElement($submitElement); }