[Eric] navigator pane

[Kamil Páral]

Hello,
I'm new to Python and I'm looking for a good IDE. I like Eric, but I
haven't managed to find a "navigator pane", that is usual for other
editors. It should display classes, methods and variables in current
file. You can see examples here:
Geany: http://www.mediafire.com/imageview.php?quickkey=zkdnml2jntd&thumb=6
Spyder: http://www.mediafire.com/imageview.php?quickkey=znzwmxxzxzz&thumb=6

I can't imagine to work without such navigator. Is it available in Eric?
How can I enable it?

Thanks,
Kamil