var id_menu = new Array('sub_menu_2009','sub_menu_2008','sub_menu_2007','sub_menu_2006','sub_menu_2005','sub_menu_2004','sub_menu_2003');
function allclose() {
 for (i=0; i < id_menu.length; i++){
  document.getElementById(id_menu[i]).style.display = "none";
 }
}
function openMenu(id){
 for (i=0; i < id_menu.length; i++){
  if (id != id_menu[i]){
   document.getElementById(id_menu[i]).style.display = "none";
  }
 }
 if (document.getElementById(id).style.display == "block"){
  document.getElementById(id).style.display = "none";
 }else{
  document.getElementById(id).style.display = "block";
 }
}