Fixed faulty signin page optimization

After 97b1c4b4d873aac19b9ff00b61b14d8822417b74 and 0d503f33de7a4536fc3d98012262f48003dc256a in Safari 7.0 signing page looks like this
![screen shot 2013-10-30 at 2 07 58 pm](https://f.cloud.github.com/assets/47926/1435953/c747ddba-414b-11e3-8734-ac560838abc7.png)