Translation of Oberbefehlshaber

Can you translate: Are you using the firefox browser? Install this tool in your browser window. The ones I suggested the other day are the most useful ones, because we would use it for generic terms which differ from Spanish.
Sorry if I did not write back, I was in Napoli during the holidays, then back at work, once again I have so much to do at the weekend, but I will do my best. Greetings from Italy. Marco.
Nevertheless, I was looking forward to the flight. Thirteen hours in the air has something exciting in itself. You can watch movies, sleep, read newspapers and rest. Normally, we always under stress.