Firebug has a lite version that can be used in any browser! Obviously it isn’t as functional as the Firefox plug-in, but it helps out none the less. Some things you are normally used to doing in firebug will not be as easy, such as disabling CSS rules and the handy inspect is less functional.

There are 2 ways to activate Firebug lite:

 1. Including an external JavaScript File
 2. Using a bookmarklet

All you have to do is add the following to your head as a javascript
script type='text/javascript'
src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'