Make tooltips work when tabbing
Fixed the tooltips on IE, and changed the background colour to be
nicer on Firefox.
Patch by: Haoyu Bai <baihaoyu@gmail.com>
Coverage: code coverage testing for Python
Coverage.py is a Python module that measures code coverage during test execution.
It uses the code analysis tools and tracing hooks provided in the Python standard
library to determine which lines are executable, and which have been executed.
For more information, see http://nedbatchelder.com/code/modules/coverage.html