Hi,
I have made it useful. See this scenario. The customer should be able to select their preferred delivery date while they want to present some gifts on particular day. They must be allowed to enter their preferred delivery date. If the date is validated as follows
1) The preferred delivery date should not be less than the current date
2) The preferred delivery date should not be less than the lead time (Lead time is the period for delivering the goods and making time - It depends on the seller).
What i have done, just i have changed the field type to int and the values are now in integer(2,3,4...) and i will take this for calculation..
You can find the demo at
http://www.just4naija.com/home.php?shopkey=500 at the checkout before confirming the order.