I'm not sure yet. I want double-tap zooming and I have some hacks I'd like to try. I noticed you incorporated that DOM stuff in -13, I've always thought that would give me quick access to the element layout; the same info I can see in the inspector.

I've had some simple resizing luck by programatically changing stuff like this:

body{width:200%}
*{font-size:150%}

See where I'm going? Just hackin' around.

I've stared at the fennec code and I see how they're doing things at a high level, but I need to dig a little deeper.

But if you know of an open source webkit implementation of double-tap zooming, please share. I haven't found one.