Fix important bug.

app/helpers/announcements_helper.rb

@@ -220,7 +220,7 @@ module AnnouncementsHelper
       else
         all_sorted = feeds_anns.select{|v| v['is_top']}.sort{|v1,v2| v2["postdate"]<=>v1["postdate"]} + feeds_anns.select{|v| v['is_top'] != true}.sort{|v1,v2| v2["postdate"]<=>v1["postdate"]}
       end
-      all_filter = filter_by_keywords(all_sorted,params[:keywords],params[:stime].params[:etime])
+      all_filter = filter_by_keywords(all_sorted,params[:keywords],params[:stime],params[:etime])
     else
       all_filter = filter_by_keywords(announcements,params[:keywords],params[:stime],params[:etime])
     end