[thelist] Mozilla is how similar to Firefox?

[Dave Merrill]

I'm in cross-browser-compatibility land these days, looking at some work
with as many of the popular ones as is practical. I use Firefox as my main
browser, plus I have IE 5, 5.5, and 6, and the Lynx text browser, all on
windows.

How important would folks say it is to also look with Mozilla? Is it much
different from Firefox?

Both css and javascript are relevant.

Thanks,

Dave Merrill