novus/nvd3 — pull request #383 by eugene-stepanov (2013-12-13 09:56:30+00:00)
Title: Pie Chart tooltip placement and style corrected.

Pie Chart tooltip invocation logic adjusted:
1. Parent container scroll offset is properly applied
2. 'with-3d-shadow' style respected if applied to parent container
3. Pie chart tooltip events invocation made consistent with the other charts