POP LOV and Branching ( Partial page refresh)

I have a POP LOV (Shows description and returns id). I want to change certain elements on the screen based on the user selection.
It is not possible via POP LOV. I cannot use selection lov since the number of values returned is going to be very large.
is it possible to achieve this functionality in any way using POP LOV ?
Appreciate your help.
Rgds

Scott,
Thanks for your input. I think I didn't frame my question correctly, sorry about that. I will describe further
I want the page to refresh after a value is chosen using POP LOV. THis is required to hide/show certain elements on the screen and also to populate another Dependant LOV.
For example, choosing country should populate dependant "city" or states lov. I have to achieve some functionality similar to this. I do not want to "Submit" the page, because I don't want to save anything at this point in time.
So it would be partial page refresh (Similar to OA Framework) without submit.
Rgds,
Venkatesh
Message was edited by:
Venkatesh_pr

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