submenu_print(_("&Print Sales Invoice"), ST_SALESINVOICE, $invoice."-".ST_SALESINVOICE, 'prtopt');
submenu_print(_("&Email Sales Invoice"), ST_SALESINVOICE, $invoice."-".ST_SALESINVOICE, null, 1);
set_focus('prtopt');
submenu_print(_("&Print Sales Invoice"), ST_SALESINVOICE, $invoice."-".ST_SALESINVOICE, 'prtopt');
submenu_print(_("&Email Sales Invoice"), ST_SALESINVOICE, $invoice."-".ST_SALESINVOICE, null, 1);
set_focus('prtopt');