document.write('
Error: Feed failed! Causes may be (1) No data found for RSS feed http://opac.ndl.go.jp/rss/000000017998.xml; (2) There are no items are available for this feed; (3) The RSS feed does not validate.
Please verify that the URL http://opac.ndl.go.jp/rss/000000017998.xml works first in your browser and that the feed passes a validator test.