Prototype Update Stack

I've been playing about for a while with prototype.js which is a phenominal javascript framework for all things cross-browser compatible and "wizzy". <-- technical terminology

Anyhow... in conjunction with a discussion here about a new little feature we've been toying with I though I should stick a patch here for anyone to get hold of since it may be easier to run the patch than to follow my post to the discussion!

So here it is: experimental prototype.js patch to allow update stacking

... that's all for now!... this will continue back here ;-)