functions

<?php
add_action( 'after_setup_theme', 'et_setup_theme' );
if ( ! function_exists( 'et_setup_theme' ) ){
        function et_setup_theme(){
                global $themename, $shortname;
                $themename = "13floor";
                $shortname = "13floor";

                require_once(TEMPLATEPATH . '/epanel/custom_functions.php');

                require_once(TEMPLATEPATH . '/includes/functions/comments.php');

                require_once(TEMPLATEPATH . '/includes/functions/sidebars.php');

                load_theme_textdomain('13Floor',get_template_directory().'/lang');

                require_once(TEMPLATEPATH . '/epanel/options_13floor.php');

                require_once(TEMPLATEPATH . '/epanel/core_functions.php');

                require_once(TEMPLATEPATH . '/epanel/post_thumbnails_13floor.php');

                include(TEMPLATEPATH . '/includes/widgets.php');
        }
}

add_action('wp_head','et_portfoliopt_additional_styles',100);
function et_portfoliopt_additional_styles(){ ?>
        <style type="text/css">
                #et_pt_portfolio_gallery { margin-left: -15px; }
                .et_pt_portfolio_item { margin-left: 9px; }
                .et_portfolio_small { margin-left: -55px !important; }
                .et_portfolio_small .et_pt_portfolio_item { margin-left: 25px !important; }
                .et_portfolio_large { margin-left: -8px !important; }
                .et_portfolio_large .et_pt_portfolio_item { margin-left: 6px !important; }
                .et_pt_portfolio_item h2 { color: #fff; }
                .et_portfolio_large .et_pt_portfolio_item { width: 412px; }
                .et_portfolio_large .et_portfolio_more_icon { left: 168px; }
                .et_portfolio_large .et_portfolio_zoom_icon { left: 208px; }
        </style>
<?php }

function register_main_menus() {
        register_nav_menus(
                array(
                        'primary-menu' => __( 'Primary Menu' )
                )
        );
};
if (function_exists('register_nav_menus')) add_action( 'init', 'register_main_menus' );

if ( ! function_exists( 'et_list_pings' ) ){
        function et_list_pings($comment, $args, $depth) {
                $GLOBALS['comment'] = $comment; ?>
                <li id="comment-<?php comment_ID(); ?>"><?php comment_author_link(); ?> - <?php comment_excerpt(); ?>
        <?php }

// update the '9' to the ID of your form
add_action('gform_pre_render_9', 'add_surcharge_js');
function add_surcharge_js($form){

  foreach($form['fields'] as &$field){

     if(strpos($field['cssClass'], 'surcharge') !== false) {
         $surcharge_field_id = $field['id'];
         continue;
     } else if($field['type'] == 'total'){
         $total_field_id = $field['id'];
         continue;
     }

  }

  ?>

  <script type="text/javascript">
     jQuery(document).ready(function($){
         $("#gform_submit_button_<?php echo $form['id']; ?>").click(function(event){

             var surcharge_field = $("#input_<?php echo $form['id']; ?>_<?php echo $surcharge_field_id; ?>");
             var total = $("#input_<?php echo $form['id']; ?>_<?php echo $total_field_id; ?>").val();

             total = Math.round((total * 2.6)) / 100;

             $(surcharge_field).val(gformFormatMoney(total));
             gformCalculateTotalPrice(<?php echo $form['id']; ?>);
         });
     });
  </script>

  <?php }

  return $form;
}

add_filter("gform_address_city", "change_address_suburb", 10, 2);
function change_address_suburb($label, $form_id){
  return "Suburb";
}

add_filter("gform_address_zip", "change_address_postcode", 10, 2);
function change_address_postcode($label, $form_id){
 return "Post Code";
}


add_filter("gform_field_value_uuid", "get_unique");

function get_unique(){

    $prefix = "MEFF"; // update the prefix here

    do {
       $unique = mt_rand();
       $unique = substr($unique, 0, 8);
       $unique = $prefix . $unique;
    } while (!check_unique($unique));

    return $unique;
}

function check_unique($unique) {
    global $wpdb;

    $table = $wpdb->prefix . 'rg_lead_detail';
    $form_id = 9; // update to the form ID your unique id field belongs to
    $field_id = 48; // update to the field ID your unique id is being prepopulated in
    $result = $wpdb->get_var("SELECT value FROM $table WHERE form_id = '$form_id' AND field_number = '$field_id' AND value = '$unique'");

    if(empty($result))
       return true;

    return false;
}
?>