well there are several of those tags throughout the page of code, so assuming that line 18 is counting from the very top of the page than here the whole code between the first of those tags that incorporates line 18:
<?php
/*
$Id: contact_us.php,v 1.39 2003/02/14 05:51:15 hpdl Exp $
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com
Copyright (c) 2003 osCommerce
Released under the GNU General Public License
*/
require('includes/application_top.php');
require(DIR_WS_LANGUAGES . $language . '/' . FILENAME_CONTACT_US);
$error = false;
if (isset($HTTP_GET_VARS['action']) &amp;amp;amp;amp;&amp;amp;amp;amp; ($HTTP_GET_VARS['action'] == 'send')) {
if (tep_validate_email(trim($HTTP_POST_VARS['email']))) {
tep_mail(STORE_OWNER, STORE_OWNER_EMAIL_ADDRESS, EMAIL_SUBJECT, $HTTP_POST_VARS['enquiry'], $HTTP_POST_VARS['name'], $HTTP_POST_VARS['email']);
tep_redirect(tep_href_link(FILENAME_CONTACT_US, 'action=success'));
} else {
$error = true;
}
}
$breadcrumb->add(NAVBAR_TITLE, tep_href_link(FILENAME_CONTACT_US));
?>
i hope this is what you meant... if you want i'll post or send you the entire page through email.