if ($_SESSION['Items']->trans_no==0) {
ref_cells(_("Reference"), 'ref', '', null, "class='tableheader2'", false, ST_CUSTCREDIT,
array('customer' => $_SESSION['Items']->customer_id,
if ($_SESSION['Items']->trans_no==0) {
ref_cells(_("Reference"), 'ref', '', null, "class='tableheader2'", false, ST_CUSTCREDIT,
array('customer' => $_SESSION['Items']->customer_id,