/**
   * Filter the timeline on keyword search.
   */
  Drupal.behaviors.filterOnKeywords = {
    attach: function (context, settings) {

      var keywordsField = $('#sixteen-timeline-filters-form input[name="keywords"]');

      keywordsField.keyup(function (event) {
        var keywordsValue = keywordsField.val().trim();
        if (keywordsValue.length > 2) {

          // Wait a 1,5 seconds before calling the AJAX function.
          delay(function() {

            $.ajax({
              url: '/timeline-keyword-search/ajax/' + keywordsValue,
              data: null,
              success: function (data) {
                // data[0] are basic settings, data[1] is de actual data.
                var newContent = data[1].data;
                var wrapper = data[1].selector;
                $(wrapper).replaceWith(newContent);
                $(window).trigger('resize');
              }
            });

          }, 1500);

        }
      });

    }
  };