I have two picklists, populated in onLoad events by an IDVault query.
At load, no values are selected.

The interface allows a user to select an object, and the "onchange"
event in that field retrieves the correct values stored in the IDV and
shows them as "selected" in the pick list.

Example:
CN ENTRY: Joe
jobCode: 10056
location: ABC

The problem is, if an admin were to pick a different user... one without
jobcode or location values, "Joe's" values stay in place and will be
wrongly submitted. If an object does not have these values, I need to
revert the pick lists to their "native" state after the onload: A bunch
of values, none selected.

field.select() selects the first value... an equally bad result. Can I
"reset" this un-selected state in any way other than repopulating the
query?

Thanks,

Rob.