Great! Puntuado con 5 de 5 estrellas

This is exactly what I was looking for. I'm using a terminal inside my FF most of the time, with shellinabox on a Linux box. I was looking for something like this to put my terminal in the window. Thanks. It works great.

Edit: If only I could save/restore the panel state, that would be awesome.

Edit #2: Tip: Those who want tabs or zoom in split panel try going to this url in the panel:

chrome://browser/content/browser.xul

;)