resize area highlighted

previously it was rather hard to resize even more so, most people probably haven't even known it's possible. This could make it a bit easier.
![1](https://f.cloud.github.com/assets/4817837/2425986/3df78352-abbe-11e3-8cad-22e112b92654.png)
![3](https://f.cloud.github.com/assets/4817837/2425987/3dfa9a56-abbe-11e3-8831-4840bfa76642.png)