search for: gethtmlbydesc

I''m sure there is an easy way to do this, but it is one of those things that is incredibly difficult to search for. How can I disable an ''Ajax.Autocompleter'' element from working ''on the fly''? I have a page where I''m using two (I know it''s crazy) Ajax.Autocompleter elements and once one of them has got a result I want the other field