Prevent undefined error

tarteaucitron.js

@@ -50,15 +50,26 @@ var tarteaucitron = {
                 });
             }
             
+            if (typeof XMLHttpRequest !== 'undefined') {
                 XMLHttpRequest.prototype.open = function () {
-                this.addEventListener('load', function () {
+                    
+                    if (window.addEventListener) {
+                        this.addEventListener("load", function () {
+                            if (typeof tarteaucitronProLoadServices === 'function') {
+                                tarteaucitronProLoadServices();
+                            }
+                        }, false);
+                    } else {
+                        this.attachEvent("onload", function () {
                             if (typeof tarteaucitronProLoadServices === 'function') {
                                 tarteaucitronProLoadServices();
                             }
                         });
+                    }
                     origOpen.apply(this, arguments);
                 };
             }
+        }
     },
     "load": function (params) {
         "use strict";