You need to first install a DjVu plugin for your web browser by visiting one of the two links in the first paragraph of
http://genealogyindexer.org/help. Once you've installed the plugin, you should be able to see the matching directory page just by clicking on the directory's title "1910..." that is part of the search result. In other words, install the plugin once and then you can view directory pages with one click.
-Logan