display_notification_centered(_("The customer payment has been successfully entered."));
submenu_print(_("&Print This Receipt"), ST_CUSTPAYMENT, $payment_no."-".ST_CUSTPAYMENT, 'prtopt');
+ submenu_print(_("&Email This Receipt"), ST_CUSTPAYMENT, $payment_no."-".ST_CUSTPAYMENT, null, 1);
submenu_view(_("&View this Customer Payment"), ST_CUSTPAYMENT, $payment_no);