if ($this->isNew()) {
            $butt_create = new \XoopsFormButton('', '', \_AM_WFDOWNLOADS_MIME_CREATE, 'submit');
            $butt_create->setExtra('onclick="this.form.elements.op.value=\'mimetype.save\'"');
            $buttonTray->addElement($butt_create);
            $butt_clear = new \XoopsFormButton('', '', \_AM_WFDOWNLOADS_MIME_CLEAR, 'reset');