HTML5-SpeedMeter

I need a Speedmeter like this one [login to view URL] (but don't need combined upload and download test, only separated ones) It's very importante to be a precise meter system. It needs to analyse Download and Upload speed (Latency is desirable too). I can help on suggestions... I Know how to make the latency analysis and I have some ideas the download analysis. I suggest to have two phases (milestones): 1) Validate measure mechanisms/system: ping, upload and download speed meter. In this milestone no sophisticated graph is necessary... only the measure system. 2) Graphical interface, similiar to the one in [login to view URL]