When you select, say March 1, 2004 for the check-in date, the check-out date will be immidately changed to March 2, 2004, without the need to use the calendar again.
RonPK
4:18 pm on Mar 28, 2004 (gmt 0)
You can read the script in the page source. The relevant JavaScript function is called populateCheckOut(). It is not very complicated: basic if-else logic.
