diff --git a/js/ajax-responder.js b/js/ajax-responder.js
index ee44348..68b8092 100644
--- a/js/ajax-responder.js
+++ b/js/ajax-responder.js
@@ -342,7 +342,7 @@
   };
 
   Drupal.CTools.AJAX.getPath = function (link) {
-    if (!link) {
+    if (!link || (typeof(link) != 'string')) {
       return;
     }
 
@@ -458,7 +458,7 @@
 
     var html = '';
     var head = document.getElementsByTagName('head')[0];
-    for (i in data.argument) {
+    for(i = 0; i < data.argument.length; i++) {
       var link = Drupal.CTools.AJAX.getPath(data.argument[i]);
       if (!Drupal.CTools.AJAX.scripts[link]) {
         Drupal.CTools.AJAX.scripts[link] = link;