Improve translate box Noté 2 sur 5 étoiles

Slows down FF, memory leak.

And could you make a hotkey for Translate BOX?
And another thing would be nice for Translate BOX,
Left column DETECT Language <--> Right column Hungarian,
and if you write something Hungarian in the left (<-) column, it should detect that it is Hungarian, and change RIGHT (->) column to ENGLISH, or any other preferred language.