select boxes depends on other select box

[suganya vijaykumar]

i wanna implement the simple calendar using three select boxes line year, month and days.. if i select the month from month select box the dates should be listed in date select box depending on selected month. like if select jan date should from 1 to 31 if i select feb the dates should select from 1 to 28.
i tried for this.. i called the script frunction on "onchange" for month select box.. but i couldn't get.. help me please...

[Eric Pascarello]

It would help if you showed us the code you have used so we can help you correct your problem.

Eric