Here is a 1 year old Firebug 1.3 (web front-end development aid) tutorial for the Chicago JavaScript user meetup. The uncompressed original available for download at the didenko.com/files/firebug_demo.mp4 page. The video is (c) 2009 Vlad Didenko. Distributed under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States license available at the creativecommons.org/licenses/by-nc-sa/3.0/us/ page.