if (window == top) 
{
 document.write ("<li class=\"menus2\"><a href=\"content\/plugins\/music\/index.html\" target=\"_top\">音乐版</font></a></li>");
 } else 
{
  document.write ("<li class=\"menus2\"><a href=\"?music_session=off\" target=\"_top\">安静版</a></li>");
}