Tooltips replaced when possible on edge cases

Before:
![tooltipPosition](https://f.cloud.github.com/assets/527245/97690/02bf7b10-6703-11e2-91f3-6e9587611510.png)

After:

![withCorrection](https://f.cloud.github.com/assets/527245/97682/aeadb47e-6702-11e2-8463-813b36e117be.png)