updated core to 7.58 (right after the site was hacked)

sites/all/modules/examples/ajax_example/ajax_example.js

@@ -0,0 +1,29 @@
+/*
+ * @file
+ * JavaScript for ajax_example.
+ *
+ * See @link ajax_example_dependent_dropdown_degrades @endlink for
+ * details on what this file does. It is not used in any other example.
+ */
+
+(function($) {
+
+  // Re-enable form elements that are disabled for non-ajax situations.
+  Drupal.behaviors.enableFormItemsForAjaxForms = {
+    attach: function() {
+    // If ajax is enabled.
+    if (Drupal.ajax) {
+      $('.enabled-for-ajax').removeAttr('disabled');
+    }
+
+    // Below is only for the demo case of showing with js turned off.
+    // It overrides the behavior of the CSS that would normally turn off
+    // the 'ok' button when JS is enabled. Here, for demonstration purposes,
+    // we have AJAX disabled but JS turned on, so use this to simulate.
+    if (!Drupal.ajax) {
+      $('html.js .next-button').show();
+    }
+  }
+  };
+
+})(jQuery);