Well, A bit of a queer thing, You can open Firefox Inside Firefox too.. (Just like Webpages) 
chrome://browser/content/browser.xul
(Copy paste that in a new tab)
Chrome Mozilla is a term used to refer to an interface used by Mozilla applications like Mozilla Firefox and Mozilla Thunderbird. The interface is written in XUL and JavaScript. The Mozilla Gecko rendering engine, which renders the web pages, also renders the user interface. Therefore the user can enter chrome URLs into the Firefox address bar and render inside the browser.
Find out more about Gecko and Chrome.
(Note: FF Seems to get a bit unstable for me, but hey! just a weird one there)
Hmm…
Tried it.
Now I could open like 4 FFs inside each other. Didn’t wanna go further !
LOL. I opened % firefoxes inside each other(cascade style) then It crashed.
lolz!! i’m not going to try more than 3
Isn’t “weird” spelled wrong?
Corrected, I Usually get mixed up with that particular word.
Thanks
http://img523.imageshack.us/img523/852/untitledir6.jpg
HeHehe
Yup !!
I tried it too.. Really Good thing.. Isn’t it ??
If so y on earth do you call it wierd ?!