Profile search results page: display search fields collapsed

On profile search results pages, the search fields are displayed uncollapsed above the search results. If your search fields include checkbox fields with lots of options then users may have to scroll down before they can see the search results, or even see that there are any: it can look to the user as though the search has failed and the search form has simply been re-displayed. It would be better if the search fields were displayed in an initially collapsed fieldset, as on CiviCRM Advanced Search results pages: Edit Search Criteria.