drop down list for 29 february

Hello everybody, <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=21422&image=1&table=forumtopics' class='bbc_emoticon' alt=':rolleyes:' />
I'd like to know if you have corrected that mistake:
http://www.asprunner.com/forums/topic/19090-dropdown-list-doesnt-function-for-29-february/
Thank you in advance