Создаем 2 файла: .top.menu.php .top.menu_ext.php
<!--В файл .top.menu_ext.php вставляем код-->
<?
if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED !== true) die();
global $APPLICATION;
$aMenuLinksExt = $APPLICATION->IncludeComponent(
"bitrix:menu.sections", "", array(
"IS_SEF" => "Y",
"SEF_BASE_URL" => "/services/",
"SECTION_PAGE_URL" => "#SECTION_CODE#/",
"DETAIL_PAGE_URL" => "#SECTION_CODE#/#ELEMENT_CODE#",
"IBLOCK_TYPE" => "services",
"IBLOCK_ID" => "1",
"DEPTH_LEVEL" => "2",
"CACHE_TYPE" => "A",
"CACHE_TIME" => "36000000"
),
false
);
$aMenuLinks = array_merge($aMenuLinksExt, $aMenuLinks);
?>