search for: create_gallery

Hi, I''m using Upload Progress class of rails and geting this javascript error in js console: "*Ajax.PeriodicalUpdater is not a constructor*" The view have somethink like: <%= form_tag_with_upload_progress( {:action => ''create_gallery''}, { :name => ''new_gallery'', :begin => "alert(''begin'')", :finish => "alert(''finish'');" } ) %> Some sugestion where can be the error?? Thank''s -- Pedro C. Valentini pedro...