I've started work on yet another wrapper for Google Maps Mobile for the N900. I'm trying to build an interface that enables keyboard shortcuts for zoom.
URL: http://www.hostdev.nl/n900/gmaps_n900.html
S: Zoom in
F: Zoom out
L: Toggle Google Latitude friends

It works on a desktop browser, but I can't get it to work on the Maemo browser. The keyboard events do fire (I've tested it with some debugging; see line 11 which is commented at the moment). But the zooming doesn't actually work. Seems like the switch statement doesn't work or something.

Could anybody please test/debug/help me with this?
Thanks!