resize fixed to top wrapper and logo on scroll

concept with the code is here:
callmenick.com/post/animated-resizing-header-on-scroll

Resizes the fixed to top wrapper AND the logo when scrolled beyond a certain point.

Not sure how easy this would be to incorporate into TC, but would be a really nice addition

Hi
when it becomes fixed the block receives the css class "istopfixed"
so you can use it to do what you want like a smaller logo
CEd