[qwook]

Was all good until you mentioned Chromium... Can you really back the claim that it's entirely written in javascript then?

[kevingadd]

Of course not. It's more like a browser shell or browser UI written in Javascript (which is still an interesting idea, but not particularly new).

A large portion of Firefox (and SeaMonkey before it) are written in JavaScript, with XUL used to do UI layout.