For example:


navigator.orientation.watchOrientation(draw);

function draw(o) {
// o.x, o.y, o.z
}

o in function draw is a vector in three dimensional space in meters /
(seconds^2) units.

This allows you to do some revolutionary stuff on the web. This is a simple test web page that moves a ball around a web page. I am just loading this web page directly with XUL Runner on Windows Mobile Professional 6.

Device Orientation on YouTube

This only supports exists on HTC devices but i do expect other devices that have accelerometers to have implementations.

I am tracking this feature in bug 485943. Please check it out and let me know what you think.

Today we are releasing a pre-alpha version of Fennec for Windows Mobile. This release is pre-alpha. Did I say pre-alpha? Yes, this is pre-alpha and has a way to go in both stability and performance before we release this as “1.0″.

Please try out and give us feedback! Please file bugs at bugzilla.mozilla.org.

Download link:
http://ftp.mozilla.org/pub/mozilla.org/mobile/fennec-0.11.en-US.wince-arm.cab

Brad has instructions here and a great overview:

http://blog.mozilla.com/blassey/2009/02/10/fennec-milestone-release-for-windows-mobile/

Developers:

Get involved. If you are a windows mobile hacker, we would love your help making Fennec better. Find us on irc.mozilla.org #wince.