/* Добавляем новый макрос [not-related-news]Если нету похожих новостей[/not-related-news] */
/* Открываем \www\engine\modules\show.full.php */

/* Найти: */
if ( $related_buffer ) {

                $tpl->set( '[related-news]', "" );
                $tpl->set( '[/related-news]', "" );

            } else $tpl->set_block( "'\\[related-news\\](.*?)\\[/related-news\\]'si", "" );

            $tpl->set( '{related-news}', $related_buffer );
        
        }

/* Заменить на: */
if ( $related_buffer ) {

                $tpl->set( '[related-news]', "" );
                $tpl->set( '[/related-news]', "" );
                $tpl->set_block( "'\\[not-related-news\\](.*?)\\[/not-related-news\\]'si", "" );


            } else {
            $tpl->set_block( "'\\[related-news\\](.*?)\\[/related-news\\]'si", "" );
            
            $tpl->set_block( "'\\[not-related-news\\](.*?)\\[/not-related-news\\]'si", "\\1" );

            }


            
/* Открываем \www\index.php */

/* Найти: */
$tpl->load_template ( 'main.tpl' );

/* После, добавить: */
if($newsid) {
    if ( $related_buffer ) {

                $tpl->set( '[related-news]', "" );
                $tpl->set( '[/related-news]', "" );
                $tpl->set_block( "'\\[not-related-news\\](.*?)\\[/not-related-news\\]'si", "" );


            } else {
            $tpl->set_block( "'\\[related-news\\](.*?)\\[/related-news\\]'si", "" );
            $tpl->set_block( "'\\[not-related-news\\](.*?)\\[/not-related-news\\]'si", "\\1" );

            }
} else {
    $tpl->set_block( "'\\[related-news\\](.*?)\\[/related-news\\]'si", "" );
    $tpl->set_block( "'\\[not-related-news\\](.*?)\\[/not-related-news\\]'si", "" );
}


/* Найти: */
$tpl->set ( '{speedbar}', $tpl->result['speedbar'] );

/* Перед или после, добавить: */
$tpl->set( '{related-news}', $related_buffer );