function easytree_init(id) {
  for(var i=0; i<menuGroup.length; i++){
    if(id != menuGroup[i]){
      $('.year' + menuGroup[i] + 'open').hide();
      $('.tree' + menuGroup[i]).hide();
      $('.year' + menuGroup[i]).show();
	}
  }
}

function easytree(id) {
  easytree_init(id);
  $('.year' + id).hide();
  $('.year' + id + 'open').show();
  $('.tree' + id).show();

  $.cookie(cookieName, id, {path:'/'});  // cookieにidを入れる
}

function closetree(id) {
  $('.year' + id + 'open').hide();
  $('.tree' + id).hide();
  $('.year' + id).show();

  $.cookie(cookieName, '', {path:'/'});  // cookieを空に
}

function loadMenu(){
  var key = $.cookie(cookieName); // cookieから読み込み
  easytree_init(key);  // メニューを初期化する
  if(key){
    easytree(key);
  }
}

var cookieName = 'news_side_menu';
var menuGroup = ['01', '02', '03'];
$( function(){loadMenu();});