fix active radio button dot position

Fix active radio button state from this:
![bug](https://cloud.githubusercontent.com/assets/922338/4331775/3a2598cc-3fca-11e4-811d-91d0bdc755a2.png)
to this:
![fix](https://cloud.githubusercontent.com/assets/922338/4331782/4b64a466-3fca-11e4-90d6-12a40c8ca680.png)