У вашего броузера проблема в совместимости с HTML5
I finally got the second LED matrix for my controller board. A few minutes of hacking at the code later, and it now scrolls the message over both matrices!
It looks really good in real life, and can do red or green LEDs (or both for orange), though the video only shows red.
Next step: get it to automatically receive the 'now playing' from the computer, currently I issue a command on the computer to send the currently playing track. Nearly done!