Hello All. First of all I wnat to say thhat I know nothing about MAC development. I have no MAC at all. Excuse me for this. I need find some way to show/hide MAC taskbar. I'm implementing Firefox extension which need to work in fullscreen mode. But it seems that there are problems on MAC (on Win all is ok). Screenshot is here So, I need to call from my extension some command which will allow to do this. I can execute some file (like BAT or EXE on Win). So, I think that there is the same approach can be used. I need some script/program which will be called by my extension to hide/show taskbar. Could anybody help me with this task?