diff --git a/src/platform/rhino.js b/src/platform/rhino.js
index a603c7df..7fb383e9 100644
--- a/src/platform/rhino.js
+++ b/src/platform/rhino.js
@@ -3,6 +3,10 @@
 */
 var __env__ = {};
 (function($env){
+    
+    //You can emulate different user agents by overriding these after loading env
+    $env.appCodeName  = "EnvJS";//eg "Mozilla"
+    $env.appName      = "Resig/20070309 BirdDog/0.0.0.1";//eg "Gecko/20070309 Firefox/2.0.0.3"
 
 	//set this to true and see profile/profile.js to select which methods
 	//to profile
diff --git a/src/window/navigator.js b/src/window/navigator.js
index 14587c66..3ea78718 100644
--- a/src/window/navigator.js
+++ b/src/window/navigator.js
@@ -4,8 +4,8 @@
 */
 $log("Initializing Window Navigator.");
 
-var $appCodeName  = "EnvJS";//eg "Mozilla"
-var $appName      = "Resig/20070309 BirdDog/0.0.0.1";//eg "Gecko/20070309 Firefox/2.0.0.3"
+var $appCodeName  = $env.appCodeName;//eg "Mozilla"
+var $appName      = $env.appName;//eg "Gecko/20070309 Firefox/2.0.0.3"
 
 // Browser Navigator
 $w.__defineGetter__("navigator", function(){