Firefox as Web developer tool LOCKED

Ok. so against my bosses wishes I use firefox while developing my web apps (and then test in IE). Some indispensible firefox-related tools I'm trying to turn him onto:

Venkman(JavaScript Debugger) - fantastic JavaScript debugger with breakpoints and good object inspection

Web Developer Extension - can't say enough good things about this, I use the Sidebar for altering CSS styles ON THE FLY (I think that's really cool). I also use the form-manipulation menu a lot. and the quick access to disable/enable javascript is great, also Otline->Table Cells (cause I really stink at HTML tables (and HTML in general, ironically)

The DOM Inspector is really useful as well (select javascript object to see things you can manipulate)

One thing I don't like is that Firefox's "View Source" formats the source in html. yeah it looks pretty, but a copypaste into a text editor results in marked-up markup. kinda defeats the purpose, unless you only wanted to LOOK at it.

My boss thinks that IE's DOM is great. Know of any sites/books that are a good reference to the differences of current browser's implementations of JavaScript and DOM?