Agreed. Or at least a description of what technologies are used (e.g. Canvas, SVG, VML, etc).
We currently use Canvas for the graph and HTML DOM for the timeline. As for browser support, see my post in reply to the post you replied to :).
Hi, we are targetting chrome, firefox, internet explorer, safari and mobile. There are some issues in andriod browser and safari has a slow javascript implementation. We try to make it fast and available on the bigger browsers.