I love how this post is the total opposite of John Resig's article about how WebKit is the jQuery of rendering engines: http://ejohn.org/blog/webkit-is-the-jquery-of-browser-engine...

And how the "bloat" added by adding WebKit specific hacks to jQuery is just 3 half-lines of code, I think it would be safe to assume that if Opera was as big as WebKit is jQuery would also need a lot of hacks for it.