Is there a way to make a Security Sandbox for javascripts and css behavior files for ie?

One way of doing it would be to run a script on your server which loads the code from the remote server and sends it to the browser, so your page would look like this:
<script type="text/javascript" language="javascript" src="jsproxy.php?url=http://example.com/ascript.js" />
... and jsproxy.php would be a script to load the javascript from the other site. Depending on your server, any one of hundreds of scripts will work for you. Try a google search to find one that works for you ( http://www.google.com/search?q=php+javas... )

Thanks!

That might just do the trick. I'll have to think about it.

After posting this I found out about the security policy called the "Same Origin Policy"
http://www.mozilla.org/projects/security...

So that rules out any "sandbox" ideas.

It seems like a proxy, either using your script or some Apache configuration like mod_proxy
http://httpd.apache.org/docs/1.3/mod/mod...

would be the only way to add this functionality to a site.