//
function add_trans_tax_details($trans_type, $trans_no, $tax_id, $rate, $included,
$amount, $net_amount, $ex_rate, $tran_date, $memo, $reg_type=null)
//
function add_trans_tax_details($trans_type, $trans_no, $tax_id, $rate, $included,
$amount, $net_amount, $ex_rate, $tran_date, $memo, $reg_type=null)