Show and Hide Parents Event

Hi dear...
A little question..
I've 2 dropbox , DROP-A and DROP-B.
DROP-A have option:
1
2
3
4
how i can setup the events to show DROP-B if DROP-A selection is 1 or 3 and hide DROP-B if DROP-A selection is 2 or 4?

Thank's in advance

Hi giacall,

You can do it by adding a lot of events (eight I think) to cover each element being selected or not. But it's probably easier to do it with Custom JavaScript in this case.

Bob