I first learned how to make a timed loop for animation in javascript in IE4 when DHTML was new. I'm sure it's a lot different now and I'd need an explanation to

I first learned how to make a timed loop for animation in javascript in IE4 when DHTML was new. I'm sure it's a lot different now and I'd need an explanation too. Be happy he wants to know how the new way works. We used to just count to 1000 every loop iteration to slow things down...