Debugging Firebug Lite

[dmccunney]

I have an ancient (circa 2005) notebook which I installed Linux on.
It's low end, with a <1ghz CPU, 256MB RAM, and an IDE4 HD.

Linux runs well enough, but I don't even try to run a current browser.
Firefox and Chromium are simply too big and slow on old hardware. I
was looking around for a lightweight alternative that was relatively
standards compliant. The one I'm playing with is QupZilla, which is
based on Qt and v4.8.4 of WebKit. (http://www.qupzilla.org)

QupZilla includes WebKit's Web Inspector, and I thought Firebug Lite
might be a nice addition. I could install the bookmarklet, but
haven't been able to get it to work. If I open it in a new tab, it
runs, and I see the icon and the menus. If I try to invoke it in an
existing tab, it replaces the existing session with a blank tab with
no content, making it useless.

Suggestions for debugging the problem? (I am *not* a JavaScript expert.)

As a possible alternate solution, QupZilla includes a plugin that lets
it run Greasemonkey userscripts, and I have an assortment installed.
Would it be possible to implement Firebug Lite *as* a userscript in
that context?

The notebook is mostly a testbed to see what performance I can get out
of limited hardware without throwing money at it, so this is all
largely theoretical and "Nope. Can't do it. Sorry." as an answer
won't distress me. I don't normally browse from the box, and this is
an exercise in curiosity.
______
Dennis