function openNews(){
  nwin = window.open('news.html','popupwin','scrollbars=yes,resizable=yes,width=530,height=520');
  nwin.focus();
}
function openSchedule(){
  nwin = window.open('schedule.html','popupwin','scrollbars=yes,resizable=yes,width=530,height=520');
  nwin.focus();
}
function openDiary(){
  nwin = window.open('diary.html','popupwin','scrollbars=yes,resizable=yes,width=530,height=520');
  nwin.focus();
}