$invoice['show_tax2'] = $invoice['calc_tax2'] > 0 ? true : false;
$invoice['show_shipping'] = $invoice['shipping'] > 0 ? true : false;
$invoice['terms'] = $invoice['terms'] ? $invoice['terms'] : ($client['def_terms'] ? $client['def_terms'] : ($admin['def_terms'] ? $admin['def_terms'] : $lang['terms']));
$invoice['comments'] = $invoice['comments'] ? $invoice['comments'] : ($client['def_comments'] ? $client['def_comments'] : ($admin['def_comments'] ? $admin['def_comments'] : ''));
$invoice['due_date'] = date($SYSTEM["regional"]["invoicedate"], $invoice['due_date']);
$invoice['issue_date'] = date($SYSTEM["regional"]["invoicedate"], $invoice['issue_date']);
$invoice['calc_tax'] = currency_format($invoice['calc_tax']);
$invoice['calc_tax2'] = currency_format($invoice['calc_tax2']);
$invoice['shipping'] = currency_format($invoice['shipping']);
$invoice['cost'] = currency_format($invoice['cost']);
$invoice['total'] = currency_format($invoice['total']);
$emailSendID = $ISL->addEmailSend($invoice['clientid'], $invoiceID, $client['email'], 1);
$e = new Emailer();
$e->setMainFile('forms/email_invoice.tpl');
$e->setFrom($SYSTEM['email']['from']);
$e->setFromName($SYSTEM['email']['fromName']);
$e->setSubject($lang['eml_subj_invoice']);
$e->set('SYSTEM', $SYSTEM);
$e->set('invoice', $invoice);
$e->set('client', $client);
$e->set('admin', $admin);
$ispayed = strtolower($invoice['curr_status']) == 'fully paid' ? true : false;
$e->set('ispayed', $ispayed);
$e->fetchMessage();
$e->appendMessage('<img src="' . HTTP_ROOT . 'isop.php?sid=' . $emailSendID . '" width="1" height="1">');
$e->setRecipient($client['email']);
$e->setPriority('High');
$result = $e->send();
unset($e);
$result = $result ? 'Successful' : 'Failed';
if ($invoice['curr_status'] == 'unsent') {
