He's just using Flot, which a lot of us use for canvas-based charts. Do they work for you at all?
If not, what browser are you using? It would be nice to know if Flot is not compatible with something.
If not, what browser are you using? It would be nice to know if Flot is not compatible with something.
I also tried Konqueror Version 4.8.4 (KDE's browser) and it didn't even display the graphs (not in the blog post or on flotcharts.org).