A lot of people complain that Firefox hasn't supported an automatic language translator. Well this extremely useful add-on does the very next best thing. The only tiny negative is that it needs to open a new tab for the translated site, however, all things considered, I reckon it's a small price to pay. This add-on does an excellent job, in fact I've noticed that once a site's homepage has been translated, then all sub-pages are translated in the same window, neat. Well done guys!!!

exactly what I wanted. Thank you!

Does exactly as advertised, saves me so much times, thanks!