RAIV wasn't graphical at all, so you must be thinking of the virtual server room tour we put together 2 years ago.
The code for that is here: http://git.osuosl.org/?p=rackview.git
however theres no documentation, and likely doesn't work with the latest version of openlaszlo. It wasn't tied into our inventory system at all. I manually merged several different sources into a single xml file. We've since moved away from laszlo in favor of html+css+javascript+svg. Eventually we might rewrite this, but have no concrete plans right now.
There is no opinion so absurd that some philosopher will not express it. -- Marcus Tullius Cicero, "Ad familiares"