function renewal(){
update = new Date(document.lastModified);
newyear = update.getYear();
if ( newyear<2000 ) newyear=newyear+1900;
document.writeln('<div class="right" style="font-size: 0.8em;">"最終更新： "+newyear+"年"+(update.getMonth()+1)+"月"+update.getDate()+"日"</div>');
}