Thread:Project:Support desk/Autocomplete in search box for newest version?

This page: http://www.mediawiki.org/wiki/Manual:Enabling_autocomplete_in_search_box

seems a bit outdated since it no longer works after version 1.19. It offers no solution for autocomplete, but when I type in the search box on a site like this or wikipedia, it starts giving me a list of possible pages I may want to go to. However, I can't find any documentary on what to use now for the latest version. What do I use now? Thanks