JavaScript pan and zoom library

[somebody already took it]

Does anyone know of a JavaScript library that makes it possible to pan and zoom over a webpage it's used on? Bonus points if it has event-handlers that indicate where the viewport is.

[phlip]

Google Maps, maybe? Or do you need something more fancy than plain images?

[somebody already took it]

Yes, I want to be able to pan and zoom across arbitrary html.

[sourmìlk]

I think that's something you should be able to do on your own. Or at least make a simplistic version. Maybe iterate through all the page's elements and resize them according to zoom level, for example?

[Steax]

You can reroute everything through a javascript/SVG/canvas system and manipulate them from that. Alternatively, toss everything into a container element, then move that around through css transforms. Anything beyond simple things could easily break, however, and transforms are quite hard on computers.