azavea/mos-energy-benchmark — pull request #190 by moradology (2014-12-26 23:36:43+00:00)
Title: Add invisible overlay to fix tooltip

![screen shot 2014-12-26 at 3 31 42 pm](https://cloud.githubusercontent.com/assets/1977405/5559878/644c4276-8d14-11e4-9102-64a53dd85ba1.png)