
If you're developing complex modules for your Arena website, you'll probably need a tool such as Firebug (a plugin for Firefox) to test how your CSS changes will effect layout in the browser. Once you've used Firebug you'll have a hard time trying to manage without it.
That's great for Firefox, but what about IE? With Firebug Lite you can also have much of Firebug's great functionality inside IE too -- you just need to add a script reference into the "head" section of your webpage...
<script type="text/javascript" src="https://getfirebug.com/firebug-lite.js"></script>
If you use our custom Inject Javascript Arena module, you can have that (or any other javascript reference) put directly into the head of the HTML with a few simple module settings:

And if you add it to your site's Arena template and only allow admins view permission to that module, it will have absolutely no impact to anyone else. Enjoy.
** You also need to add this "bookmarklet" (Launch Firebug Lite) to your your Favorites in IE which is used to start Firebug Lite.