>Thanks, Sergey. I'd rather avoid 3rd party extensions but I might look into it later.
It seems that several things that are built-in in Opera, must be installed separately in FireFox.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)