Alphaindex modul készítés

$app	= JFactory::getApplication();
    $db		= JFactory::getDbo();
    $query	= $db->getQuery(true);
    
    $letters = range('A', 'Z');
    array_unshift ($letters,"!");
    $menu = '<ul style="margin: 0; padding: 0; list-style-type: none;">'."\n";
    foreach ( $letters as $letter ) {
      $query->select('COUNT(title) AS vanbetu');
      $query->from('#__categories');
      $query->where("title LIKE '$letter%' AND parent_id=16 AND level=2");
      $db->setQuery($query);
      $eredmeny = $db->loadResult();
      if ($eredmeny>0) {
        $menu .= '<li style="display: inline; padding-right: 3px;font-size:10px;"><a href="'.JURI::base().'index.php?option=mod_aplhaindex&format=raw&tmpl=component&Id='.$letter.'">'.$letter.'</a></li>';
      } else {
        $menu .= '<li style="display: inline; padding-right: 3px;font-size:10px;">'.strtoupper($letter).'</li>';
      }
      $query->clear();    
    }
    $menu .= '</ul>'."\n";