How to refresh Portal form with dependent LOVs ?

I have a portal form which has dependent LOVs, the first LOV is
a Site LOV and the next LOV is a Teacher LOV. Once a Site is
selected, the form refreshes to load the Teacher's LOV with
teachers belonging to the selected Site.
In some cases the Site is assigned internally (using Javascript)
in such cases the form does not refresh automatically; which
causes the problem, as all the Teachers of all the Sites are
loaded in the LOV.
Any suggestions are welcome.
Thanks,
Hilal

Put this code into the javascript onChange event of the list box
that you want to automatically refresh the screen with:
do_event(this.form,this.name,1,'CUSTOM','');
that should cause the screen to refresh when an item is chosen.
at that point, the 2nd list box (if you used the :paremter in
the LOV and bound it to the right field in the form) should come
up with the proper set of values Thanks Michael,
But my problem is not with that part of refreshing; that is
refreshing, when a value is picked from the first LOV to re-load
the second LOV works fine.
My problem is only when the value of the first LOV is internally
set, the form does not refresh to re-load the second LOV. The
value of the first LOV is loaded(internally) using one of the
fields in "wwsec_api.person_info", eventhough this value is set,
it does not trigger a refresh to re-load the dependent second
LOV.
I guess a solution to this problem would be to explicitly
refresh the form (I am not able to figure out how).
Hope I have clarified myself.
Thanks.

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