<?

function nofollow_help($section = 'admin/help#nofollow') {
  if ($section == 'admin/modules#description' || $section == 'admin/help#nofollow') 
    return t('Appends link tags in HTML with a "nofollow" attribute for search engines, to inhibit comment spamming.');
}

function nofollow_filter($op, $delta = 0, $format = -1, $text = '') {
  switch ($op) {
    case 'list':
      return array(t('NoFollow'));

    case 'description':
      return t('Appends link tags in HTML with a "nofollow" attribute for search engines, to inhibit comment spamming.');

    case 'process': 
      return preg_replace('/<a([^>]+)>/i', '<a\1 rel="nofollow">',$text);

    default:
      return $text;
  }
}


?>