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InspectThis manufacturer description
Inspect the current element with the DOM Inspector*.
Adds an entry to the context menu to open the DOM Inspector on the selected element.
Language support for English (en), German (de), French (fr), Russian (ru), Italian (it), Dutch (nl), Portuguese (pt), Greek (el), Spanish (es), Japanese (ja), Bulgarian (bg), Chinese (zh), Czech (cs), Hungarian (hu), Korean (ko), Norwegian (no), Croatian (hr), Danish (da), Finnish (fi), Icelandic (is), Tagalog (tl), Polish (pl), Serbian (sr), Swedish (sv), Turkish (tr) and Albanian (sq).
* Please note that the DOM Inspector must be installed.
Get it from https://addons.mozilla.org/firefox/addon/6622