diff --git a/js/macrobuilder.js b/js/macrobuilder.js
index 8be83bad84eed0ce1272018dae665a6315f97e61..b1052eb847f57d542061d5bfbfd7b5a73786160c 100644
--- a/js/macrobuilder.js
+++ b/js/macrobuilder.js
@@ -1,17 +1,21 @@
 /* $Id$ */
 
-////////////////////////////////////////
-//           Map ID widget            //
-////////////////////////////////////////
-Drupal.gmap.addHandler('mapid', function(elem) {
+/**
+ * @file
+ * Map ID widget for macro form.
+ */
+
+/*global $, Drupal */
+
+Drupal.gmap.addHandler('mapid', function (elem) {
   var obj = this;
   // Respond to incoming map id changes.
-  var binding = obj.bind("idchange",function(){
+  var binding = obj.bind("idchange", function () {
     elem.value = obj.vars.macro_mapid;
   });
   // Send out outgoing map id changes.
-  $(elem).change(function() {
+  $(elem).change(function () {
     obj.vars.macro_mapid = elem.value;
-    obj.change("idchange",binding);
+    obj.change("idchange", binding);
   });
 });