Requiring the value of another field to allow selecting an option in a SELECT element

[peterdorling]

i have built a table but need one of the options on one of my drop down menu's to require a date to be inputed if you choose it. e.g the options on the dropdown are To Book, Booked, ReBook, Cancel. i need it so that if you choose "booked" it requires you to enter a date before you can leave the record... i am completely stuck on this and all help would be very much appreiciated... thanks

[pbmods]

Changed thread title to better describe the problem (did you know that threads whose titles contain phrases such as 'please help' actually get FEWER responses?).

Moving to the JavaScript forum....

[acoder]

i have built a table but need one of the options on one of my drop down menu's to require a date to be inputed if you choose it. e.g the options on the dropdown are To Book, Booked, ReBook, Cancel. i need it so that if you choose "booked" it requires you to enter a date before you can leave the record... i am completely stuck on this and all help would be very much appreiciated... thanks

Show some code please. What do you mean by leaving a record? Do you mean when submitting a record?