Possible Duplicate:
Can I change the Firefox menu to look like the Firefox menu in Windows?
I guess that does not make sense in Unity, because it has a special way of changing the classical display of the Main Menu and to disable the option of un/checking it.
In Windows, after hiding Main Menu, Firefox creates that upper-left button that has become the image of Firefox 4+, but in Lubuntu un-checking the Main Menu would not have this effect, but would result in the looks common to Firefox 3.6.
Is that new look available somehow in Lubuntu?
(default theme)
(REIN theme)