can't use a select box (i.e html SELECT tag) because that is all O/S based.
you would have to custom-build your popup as divs, position them based on the element you clicked on and have some conditional statement that decides whether to pop it at top or bottom of the clicked-on element. your questions sounds like you're not too familiar with these details and I doubt there is a plugin for it. most Select-replacement plugins simply try to recreate the standard popup behavior. HTH
