Can I set firefox to always open in fullscreen mode?

Having just purchased a netbook with limited resolution, I would like to force firefox to always start in full screen mode. Once running, you can enter or exit full screen mode using the F11 key, but I would like to always start in fullscreen mode.

So far, I have looked in about:config as well as looked through the firefox command line arguments, but I can't seem to find what I am looking for. I would prefer not installing extensions, as I feel there should be some straightforward way to do this without one - but it would be a feasible last resort.

Is there a way to just add the keystroke F11 to the shortcut?

The only way I know of is to use the Autohide extension...

http://www.krickelkrackel.de/autohide/

Start Browser in full screen mode:

Use "-fullscreen" as command line option
for specific site: -URL "http://www.google.com" -fullscreen
Or shutdown while in full screen mode

Click to expand...

http://www.krickelkrackel.de/autohide/autohidehelp.htm