Modern Retail developers have been using the Firebug Firefox Extension for years and have found it to be indespensible when creating websites.
Not only does it allow you to inspect and debug the HTML and JavaScript in your website but it also allows you to see how your web page is loaded. This help you determine what elements on the page are taking a long time to load!
Once you start using Firebug I'm sure you'll find a 1,000 uses for it!
Date Created: 01/10/14