Ломает js

Выдаёт ошибку

event is not defined

jQuery(document).ready(function($) {

  var realkit_upload_thumb_button = $('.realkit_upload_thumb_button');
  if (realkit_upload_thumb_button.length) {
    realkit_upload_thumb_button.on('click', function() {

      var button = $(this), frame;

      event.preventDefault();

Надо заменить 5 строку на
realkit_upload_thumb_button.on('click', function(event) {

• This topic was modified 6 years, 5 months ago by alexsakhnov. Reason: markup