Firefox menu font too big

Hello, I have the following problem with Firefox 2.0: The font of the menu and the size of input boxes in webpages are to big. Firefox 1.5 had a dpi setting in the preferences with which I could correct this. But in Firefox 2.0 this setting is gone. I use XFCE as window manager. The font size settings of XFCE do not apply to the size of the font of the menu bar. Does anybody have an idea how to fix this? Regards, Markus -- Visit my homepage: http://home.arcor.de/markusheinz/