For anyone who’s not familiar with the Firefox add-on - you really should be, it’s a really cool hands-on way to edit or peruse code while you browse, read more, or get firebug here *snipped from the website
Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
