function new_mark(y, m, d, cl) {
  term = 10; // 日数
  pass_day = new Date(y + "/" + m + "/" +d);
  new_day = new Date();
  d =(new_day - pass_day) / (1000 * 24 * 3600);
  if(d <= term) {
    // Newマーク
    if(cl == "new") document.write("<img src='https://www.m-road.co.jp/ig/new.gif' alt='NEW' title='10日以内の更新' />");
  }
}