include_once($path_to_root . "/sales/includes/db/sales_invoice_db.inc");
include_once($path_to_root . "/sales/includes/db/sales_delivery_db.inc");
include_once($path_to_root . "/sales/includes/db/sales_types_db.inc");
include_once($path_to_root . "/sales/includes/db/sales_invoice_db.inc");
include_once($path_to_root . "/sales/includes/db/sales_delivery_db.inc");
include_once($path_to_root . "/sales/includes/db/sales_types_db.inc");