cordova 2.0.0 - events of inappbrowser is not fired for windows phone 8 -

cordova 2.0.0 - events of inappbrowser is not fired for windows phone 8 -

i using cordova 2.4.0. inappbrowser . events not beingness fired in that.

var ref = window.open(url, '_blank');

ref.addeventlistener('loadstart', function() { alert("ref"); });

page opened in inappbrowser. event doesnt fire.

cordova-2.0.0