http://www.despard-design.com/StartClockDemo/Start...
Dont' click that just yet though, it probably won't work in your browser.
Its a start clock display, emulating the hardware ones from Alge, Tag-Heuer, etc, that runs as a javascript app in a browser. It has a analog and digital time of day display, a red/green start light, countdown to next start time, start beeps, and it loads a startlist file to display the next starters.
Since it's intended to run a computer that I control, I made no effort for cross browser support. It uses a bunch of webkit specific css flags to do the clock hand rotation, and css3 box model for centering, and the audio will only work on new versions of webkit.
I know it works in recent versions of chrome and safari. In older versions everything but the audio works. I don't think it will work in anything else right now.
Known bugs:
broswer support
can take one start cycle to get everything initialized properly
start interval and start list location are not configurable without editing properties in the code.