https://abilitynet.org.uk/sites/abilitynet.org.uk/modules/contrib/google_cse/google_cse.js?tlp6ul

1(function ($) {
2
3  /**
4   * Google CSE utility functions.
5   */
6  Drupal.googleCSE = Drupal.googleCSE || {};
7
8  Drupal.behaviors.googleCSE = {
9    attach: function (context, settings) {
10      // Show watermark, if not disabled in module settings.
11      if (Drupal.settings.googleCSE.showWaterMark) {
12        Drupal.googleCSE.googleCSEWatermark('#search-block-form.google-cse', context);
13        Drupal.googleCSE.googleCSEWatermark('#search-form.google-cse', context);
14        Drupal.googleCSE.googleCSEWatermark('#google-cse-results-searchbox-form', context);
15      }
16    }
17  };
18
19  /**
20   * Show google CSE watermark.
21   */
22  Drupal.googleCSE.googleCSEWatermark = function(id, context) {
23    var f = $(id, context)[0];
24    if (f && (f.query || f['edit-search-block-form--2'] || f['edit-keys'])) {
25      var q = f.query ? f.query : (f['edit-search-block-form--2'] ? f['edit-search-block-form--2'] : f['edit-keys']);
26      var n = navigator;
27      var l = location;
28      if (n.platform == 'Win32') {
29        q.style.cssText = 'border: 1px solid #7e9db9; padding: 2px;';
30      }
31      var b = function () {
32        if (q.value == '') {
33          q.style.background = '#FFFFFF url(https://www.google.com/cse/intl/' + Drupal.settings.googleCSE.language + '/images/google_custom_search_watermark.gif) left no-repeat';
34        }
35      };
36      var f = function () {
37        q.style.background = '#ffffff';
38      };
39      q.onfocus = f;
40      q.onblur = b;
41//      if (!/[&?]query=[^&]/.test(l.search)) {
42      b();
43//      }
44    }
45  };
46
47})(jQuery);