ipython/ipython — pull request #5920 by yaph (2014-05-28 21:45:52+00:00)
Title: Change z-index of ipython_tooltip

I experienced the problem stated in #5755. Giving the ipython_tooltip class a higher z-index indeed solves the problem. I intentionally set it to a high value so it likelier remains on top when styles are changed in the future.