Speedbar, imenu, etags

[yary]

I've been using etags, with all its warts, happily for over a decade.
I just started using the speedbar, which led me to imenu, which is
good.

But, some of my files have the extension ".js" and are full of
javascript. Etags is generating good-enough tags for me (tags_search
will find relevant functions in them, for example). I expected the
speedbar to show me the tags when I click on the "+", but it just
changes to a "-" with nothing under it.

I thought that speedbar would fall back to etags if imenu failed to
find any tags, but that doesn't seem to be happening. I'm not even
sure if it is finding my etags, since I'm running on W32 and I doubt
the executable is where speedbar could find it.

Is there a variable/config option to set the etags executable
location?

Is there a better way to have imenu/speedbar find the tags in my
javascript files?

thanks in advance

-y