I can't help but wonder if the this is
not achievable more easily with native html5+CSS3 i.e so no plugins for TW (see e.g
the Hooker Method - I think this should be possible to add draggable poisitioning to.) CSS3 can handle zooming effects and much more, surprisingly powerful. But maybe you have more in mind, like your previous animatinos, and SnapSVG is the way to go? :-)
Regarding your demo, or rather the instrux, may I suggest that you rephrase "When you are zoomed in you can click outside the group to zoom back out to see the full menu." into "... you can click outside the group
on the wine red background to ...."
And in the red/green group, add e.g "Watch the TW title" or similar. I missed it on my first few attemts and thought it was just a static image.
Ok, cool stuff!
<:-)