Validating on field exit instead of Commit?

[RDecker]

Is there any way to trigger the validation calc when a user exits the validated field instead of when the record is committed?

I validate two year fields with a calc, but the validation doesn't occur until the record is committed, in which case it's not clear which year field is being flagged as invalid. This is esp. true if it's the *first* year field and the record is committed immediately after entering the *second* year field (e.g. by hitting Enter key).

I suppose I could specify which field it is in the custom error message, but it would make more sense in the flow of data entry to fix such problems immediately instead of several fields later.

decker