function optionMenu(opt) {
  location.href = opt.options[opt.selectedIndex].value;
}

document.write('<option value="#" selected>選択してください');
document.write('<option value="../../library/2011/index.html">2011');
document.write('<option value="../../library/2010/index.html">2010');
document.write('<option value="../../library/2009/index.html">2009');
document.write('<option value="../../library/2008/index.html">2008');
document.write('<option value="../../library/2007/index.html">2007');
document.write('<option value="../../library/2006/index.html">2006');
document.write('<option value="../../library/2005/index.html">2005');
document.write('<option value="../../library/2004/index.html">2004');
document.write('<option value="../../library/2003/index.html">2003');
document.write('<option value="../../library/2002/index.html">2002');
document.write('<option value="../../library/2001/index.html">2001');
document.write('<option value="../../library/2000/index.html">2000');
document.write('<option value="../../library/1999/index.html">1999');
document.write('<option value="../../library/1998/index.html">1998');
document.write('<option value="../../library/1997/index.html">1997');
document.write('<option value="../../library/1996/index.html">～1996');