if you want to control your Arduino Board using HTML5 WebSockets then we developped a freeware called 'LabScript' that allow you to build a web-based GUI to control and configure your device,
the tutorial is available at this link: http://automata20111.appspot.com/
let me know if you have any questions,
enjoy !!
that page doesn't work well for me. Everything from 3 Creating GUI on down is just headers with no details.
would it be possible to use this from my phone or tablet with the arduino connected to a serial port on a windows pc - that would be handy.
Added a simple example on how to use the tool, please check: http://automata20111.appspot.com/