So that was 25 minutes, and I have it working, though I admit, I am not a brilliant Javascript programmer, but I can get it done, and I made up the test, so...

So that was 25 minutes, and I have it working, though I admit, I am not a brilliant Javascript programmer, but I can get it done, and I made up the test, so... I probably had a head start. I forgot what setInterval was, and had to look that up (I haven't used it in years, seems setTimeout is much more useful). Hope that helps.