Did you know that you can author complete Mobile Applications for Android, IPhone and other mobile platforms in Java Script?
There are two major Application Development frameworks available today that let you author mobile applications in Java Script:
appcelerator.com has released a Java Script SDK and a small IDE in which you write code in pure HTML/CSS/JS and it compiles mobile apps for you out of it.
The compiled code is nothing but native mobile code that you could write in Java (for Android) or Objective C (for I phone/I pad)
The Same code can also be compiled in to a Desktop Application.
The extend JS library of this supports full File System access and other all sorts of features that’s available in a standard desktop app.
If you are expert in JS libraries like JQuery, DOJO, YUI etc. you are with an advantage!!
I gave it a trial and results are quite exciting, although the IDE is in its infancy.
Give it a try!!