Нужен модуль отображения категорий - Модули и плагины

<?php
/** ensure this file is being included by a parent file */
defined( '_VALID_MOS' ) or die( 'Direct Access to this location is not allowed.' );
	
if (!defined( '_MOS_CATTREE' )) {
	/** ensure that functions are declared only once */
	define( '_MOS_CATTREE', 1 );
	
global $mosConfig_absolute_path;

$option	= intval( mosGetParam( $_REQUEST, 'option', 0 ) );
$task	= intval( mosGetParam( $_REQUEST, 'task', 0 ) );
$sectionid = intval( mosGetParam( $_REQUEST, 'sectionid', 0 ) );
$id	= intval( mosGetParam( $_REQUEST, 'id', 0 ) );
$Itemid	= intval( mosGetParam( $_REQUEST, 'Itemid', 0 ) );


	function mosShowCatTree($parent_id) {
		global $database,$QUERY_STRING;
		global $option, $task, $sectionid, $id, $Itemid;

		$section_id=($task="section")? $id:$sectionid;
		
		$sql  = "SELECT * FROM #__categories  WHERE".
			"\n section=".$section_id.
			"\n AND parent_id=".$parent_id;
		$database->setQuery( $sql );
		$rows = $database->loadObjectList( 'id' );

		if (count( $rows )) {
		echo "\n".'<ul>';
			foreach ($rows as $row) {
				echo "\n".'<li> '.$row->name.'</li>';
				mosShowCatTree($row->id);
			}
		echo "\n".'</ul>';
		}
		
	}
}
$parent_id=($task="category")? $id:0;
mosShowCatTree($parent_id);
?>

$sectionid = intval( mosGetParam( $_REQUEST, 'sectionid', 0 ) );
$id= intval( mosGetParam( $_REQUEST, 'id', 0 ) );
.
.
.
.

$section_id=($task="section")? $id:$sectionid;