A little request...

AGES ago in someone's LJ, they mentioned this thingy that you could download (with Mozilla Firefox) that meant you didn't have to type in the html codes to do things like bold and italic, you just right clicked on the word and a little menu came up.

Since rebooting etc, I have lost it and can't remember where I got it from! *wails* If anyone knows what I am talking about, and can point me in the right direction, I'd be ever so grateful!

Edit: And as you can tell by the above mess, I need help!

Thank you ilye_elf!

Thank you!