[TxMt] Switch font with hotkey

[Andreas Wahlin]

I work in either 9 points monaco or 12 points anti-aliased monaco, is  
it possible to switch between these two with a simple hotkey?
(also, to be really perfect, I'd like it to switch themes because I  
disable all bold and italics in my favourite themes because of 9  
points monaco, but they look good with 12 points and so ideally I  
should switch between two themes as well, I think this can be done  
but I'm not entirely sure how)

Andreas