how do i translate in real time

i have recently swore off google chrome....i am a journalist and i need to be able to read comments in real time as i follow current events......my problem is this....in google chrome i was able to translate any foreign languages just by right clicking and translate....worked great....i know i can add translation to firefox but so far i can not find one that will translate the whole page in real time and continue to translate any new comments automatically.....please help i do not want to use chrome but this is a must have for the work that i do....thank you.