I have a simple CORS AJAX call from within AngularJS application with success callback:

```
$http({method:'POST',url:"http://0.0.0.0:4567/authenticate", 
 params: {Lusername:scope.Lusername,Lpassword:scope.Lpassword}})
 .success(function(){alert("Success")})

```

When used in Safari it works fine: returns expected JSON object and shows the alert box. However in Firefox, although the JSON object is returned properly the success callback is not triggered.

Any idea why?