public function getDeleteButton($row, $href, $label, $title, $icon, $attributes)
  {
    if (!$this->isCategoryDeletable($row['id']))
    {
      return $this->generateImage('delete_.gif', $GLOBALS['TL_LANG']['tl_dms_categories']['delete_'][0], 'title="' . sprintf($GLOBALS['TL_LANG']['tl_dms_categories']['delete_'][1], $row['id']) . '"') . " ";
    }
    return '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.specialchars($title).'"'.$attributes.'>'.$this->generateImage($icon, $label).'</a> ';
  }