progession bar

Hi all Does any one know how to do the progession bar to mesure the time out? Like give it 1 minute for the bar to progress, I got some logic here but something still unclear to me. The procedures I see are 1. get curren time when the page is loaded 2. add 60 seconds on that current time value to tell when to stop the bar 3. make a table , 6 rows so each row repersent every 10 seconds 4. This is the bit where I got stuck, how do I change the color of table cell every 10 secs for 6 times. any help will be thankful Jack jacky@activelifestyle.com "There is nothing more rewarding than reaching the goal you set for yourself"