The solution is very similar to GWT, Google's ugly step child. Why ugly, because it uses Java... hiss! Boo! Yet it does make every optimization under the sun and boils it down to JS.

Using JS to insert CSS, DOM nodes, and more JS is becoming pretty standard now. ExtJS and GWT led the way seven years ago, and frameworks need only dumb it down more to gain popular acceptance. I've been on teams that made award winning sites with GWT, but you had a steep learning curve. Perhaps OJ can overcome that.