I've been working on a floating/sticky scroll solution over the last couple of days and decided to go with fixed positioning to try and lessen the CPU load. Dealing with all the edge cases and trying to keep the code as sane as possible has been a complete bitch. Off loading all that to the browser would be a godsend.

It's still a work in progress but this is what I have so far: http://pastebin.com/PWCCERXk