Any firefox addons that do this?

Hey, i was wondering if anyone knew of a firefox addon that does what this software does: http://www.faststone.org/FSCaptureDetail.htm. seems like it would be a nice little utility if they was.

Here are a few that might help:
https://addons.mozilla.org/en-US/firefox/addon/1146
https://addons.mozilla.org/en-US/firefox/addon/5648

Thanks! I could really use something like this.

You can just press the screen shot button on the keyboard and paste it in your image editor... or you can recreate it with the addons-
Web Devoloper
or
Firebug

Hope that helps...