**
list dir
**

			db_connect.php(glopal)//connect to datebase server.
			db_close.php(glopal)//Close datebase connection.
			order_mail.php(glopal)//This file send an email contains cart Item
			session_start.php(glopal)//start session
			session_end.php(glopal)//end session
			{}.php(glopal) // common file.