Pie chart

Hi,
I have this challenge here to create an HTML page form XML (sales) data.
That so far is no problem. Whar is a problem that there is a pie chart to be
included. I've been playing around with SVG using rotate() and paths with
arcs and the like but I haven't found a solution yet to produce a pie chart.

Does anyone have a hint for me on how to go about doing that?

Thanks in advance,
Christian Schmitt