404.php

<? 
include_once($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/urlrewrite.php'); 

$sapi_type = php_sapi_name(); 
if ($sapi_type=="cgi") 
   header("Status: 404"); 
else 
   header("HTTP/1.1 404 Not Found"); 

@define("ERROR_404","Y"); 

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/header.php"); 

$APPLICATION->SetTitle("404 - HTTP not found"); 

$APPLICATION->IncludeComponent("bitrix:main.map", ".default", Array( 
   "LEVEL"   =>   "3", 
   "COL_NUM"   =>   "2", 
   "SHOW_DESCRIPTION"   =>   "Y", 
   "SET_TITLE"   =>   "Y", 
   "CACHE_TIME"   =>   "3600" 
   ) 
); 

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/footer.php");?>

ErrorDocument 403 /index.php