Drop-down menus

Hi-- Let's say I have two (2) drop down menus (time-in & time-out, for example), each one has the same options (7:00 a.m., 7:30 a.m., 8:00 a.m., 8:30 a.m, 9:00 a.m., so on...). What I would like to do is this: * When the user selects an item from drop-down menu #1 (time-in) and then moves to the next field, drop-down menu #2 (time-out) should AUTOMATICALLY change to the same option drop-down menu #1 changed to. I guess you can see the obvious reasoning: If the user selects 8:30 a.m. on menu #1 (time-in) , then the system should select 8:30 a.m. as the option on menu #2 (time-out). Thanks a lot! Julio Cuz, Jr. Riverside Community College jcuz@rccd.cc.ca.us