Firebug lite in any browser...

Thanks to css-tips for this one, wish I'd found this site years ago  

Use Firebug in Any Browser

Just include this script on the site and you'll get a Firebug console that pops up for debugging in any browser. Not quite as full featured but it's still pretty helpful! Remember to remove it when you are done.

broken down for copy and paste
Just add the < and /> back in.
script type='text/javascript'
src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'
script