---------------------|INSTALLATION|---------------------
Install:
 - Create table for languages like:
+-----------+-------------+------+-----+---------+----------------+
| Field     | Type        | Null | Key | Default | Extra          |
+-----------+-------------+------+-----+---------+----------------+
| id        |int(11)      | NO   | PRI |         | auto_increment |
| lang      |varchar(10)  | YES  |     | NULL    |                |
| fb_lang   |varchar(10)  | YES  |     | NULL    |                |
| text_lang |varchar(20)  | YES  |     | NULL    |                |
+-----------+-------------+------+-----+---------+----------------+
!IMPORTANT:
Connection to MySQL needs to be thru mysqli connector
Or you may adopt code for other connector or DB type

 - Content of table must be like:
+----+-------+---------+
| id | lang  | fb_lang |
+----+-------+---------+
| ru | ru_RU | Русский |
| en | en_US | English |
+----+-------+---------+ 

 - Require_once lang_switcher.php at very top right after mysql connection setup on every page where you need to switch the language
   
   
   ============================|LICENSE|====================================
   Copyright 2012 Veliov Group: Dmitriy A. Golev

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.