Finish a Javascript Prototype using D3.JS

I have a proof of concept that is partially built here [login to view URL] It uses D3.JS to draw a nested donut graph, which I've mostly completed. Now I'm wanting someone to write some Javascript that will complete the calculations for the sliders to adjust the values dependant on each other. I've uploaded a whole set of designs that describe the different states of the finished working prototype which are attached as PNG files. You'll see that the sliders output values that influence each other, and influence the state of the donut depending on where the sliders are set. I'm wanting to finish the prototype and have setup a github repo located at [login to view URL] If anything is unclear regarding the functionality - please ask questions before starting the job.