No, your eyes are not failing you...the Infiltration Lab has undergone some significant design changes! Version 2.0 I guess...not that anybody is counting.
This is something that I've been working on and planning for a little while now. The changes may not be too dramatic, but I think the site has a nicer feel now. I was never that fond of framesets, and I think the new use of PHP gives things a more unified feel.
Most of the changes have been implemented, but I'm sure there are still problems. If you see something that is broken, please let me know.