<?php
if (!defined('IN_SITE')) {
define('IN_SITE', true); // если эта константа не доступна в модулях, то ошибка
include ("cfg.php"); // настройки
$obj_error->return_error(PAGE_404, $obj_error->txt_access_error());
}else {
//[>NO_CACHE<]//
while(list($col_name, $col_value) = each($_GET)) {
  $$col_name = "$col_value";
}
while(list($col_name, $col_value) = each($_POST)) {
  $$col_name = "$col_value";
}
function castr_level ($level) {
global $obj_error;
$level_castr = eregi_replace("[^a-z,_,0-9,-]","",$level);
$level_castr = (string)$level_castr;
if ($level!=$level_castr) $obj_error->return_error(PAGE_404, $obj_error->txt_level_error());
return ($level_castr);
}
$n = 1;
$level = 'level'.$n;
while (isset($$level) or !empty($$level)) {
$$level = castr_level($$level);
$n++;
$level = 'level'.$n;
}
//[>NO_CACHE<]//
}
?>