Like if you were born on 24th July 1980, it was a Thursday. So using this script you’ll be able to find when your birhtday will Exactly match the day. And it’ll also show all the birthdays in all the years starting from your birth year to the range you put.
It was made for IE in those days. I just tested in Firefox 3.0, Chrome, Opera 9 and Safari 4 and all of them seem to work fine with this script.
Don’t blame me for the interface, I was not a very good designer then 🙁