Firefox Web Developer Extension and View Style Information
15 Sep 2005“View Style Information” wasn’t working here for a while, and I couldn’t figure out why. Turns out it’s dependent upon the Firefox DOM Inspector being installed — and, in Ubuntu at least, that’s a separate package.
If this feature of Chris Pederick‘s excellent Web Developer Extension isn’t happening for you, try adding the firefox-dom-inspector package. If you’re not using packages, reinstall Firefox ensuring that the “Developer Tools” option is checked (more on this issue for non-packaged versions here)