BUG: Fix alignment of media button

Before:
![old](https://f.cloud.github.com/assets/984753/563490/d09f8f0c-c4dc-11e2-8eb6-3e7f5cac3d2c.png)

After:
![after](https://f.cloud.github.com/assets/984753/563491/d4a22dee-c4dc-11e2-980f-e6103e741aee.png)

Tested in Firefox, Chrome, IE8, and IE9