What should the sliders do?
I control my home with a dsPIC33fj and over ethernet/RS485. The Webinterface sliders for some RGB lights in my living room look like this:

(http://http://www.abload.de/image.php?img=screenshot_2012-08-313xu49.png)
Is this what you are looking for?
Btw: the backend is done by me and the frontend webinterface stuff (design) made a friend of mine. If you are interested in the slider stuff, I can ask him if I can share this here.
The backend stuff is just data transmission with get and software pwm or transmission of data over RS485 to my PWM boards.