I am boggled.
Most people don't know this, but Adobe Flash is a
published specification. Anyone who wants to can implement a Flash interpreter. And while there have been several attempts to do so-- most notably Gnash, the GNU Flash Interpreter-- most of them fall short. Adobe has a lot of good engineers, a lot of money, and has the advantage of seeing the next rev of the standard months before the rest of us.
So it is beyond mind-scroggling to discover that someone has written an open-source implementation of Flash...
in Javascript.
Gurk.