document.write('<div class="rss-box">');
document.write('<p class="rss-item"><em>Error:</em> Feed failed! Causes may be (1) No data  found for RSS feed http://www.nicovideo.jp/tag/%e9%9b%bb%e6%ad%8c%e3%82%bb%e3%83%b3?sort=f&amp;rss=2.0; (2) There are no items are available for this feed; (3) The RSS feed does not validate.<br /><br /> Please verify that the URL <a href="http://www.nicovideo.jp/tag/%e9%9b%bb%e6%ad%8c%e3%82%bb%e3%83%b3?sort=f&amp;rss=2.0">http://www.nicovideo.jp/tag/%e9%9b%bb%e6%ad%8c%e3%82%bb%e3%83%b3?sort=f&amp;rss=2.0</a> works first in your browser and that the feed passes a <a href="http://feedvalidator.org/check.cgi?url=http%3A%2F%2Fwww.nicovideo.jp%2Ftag%2F%25e9%259b%25bb%25e6%25ad%258c%25e3%2582%25bb%25e3%2583%25b3%3Fsort%3Df%26amp%3Brss%3D2.0">validator test</a>.</p></div>');