Club Drupal

(function ($) {

  function updateFilterHelpLink () {

    var $link = $(this).parents('.filter-wrapper').find('.filter-help > a');

    var originalLink = $link.data('originalLink');

    if (!originalLink) {

      originalLink = $link.attr('href');

      $link.data('originalLink', originalLink);

    }

    $link.attr('href', originalLink + '/' + $(this).find(':selected').val());

  }

  $(document).on('change', '.filter-wrapper select.filter-list', updateFilterHelpLink);

  /**

   * Override core's functionality.

   */

  Drupal.behaviors.filterGuidelines = {

    attach: function (context) {

      $(context).find('.filter-wrapper select.filter-list').once('filter-list', updateFilterHelpLink);

    }

  };

})(jQuery);