// JavaScript Document
cookiename   = "form";            //　クッキー名
   life      = 30;               //　クッキーの保存日数
   element      = new Array("username", "password");      //　保存するエレメント名
   function getcookie() {               //　クッキー読み込み
      cookie1 = document.cookie.split("; ");      //　"; "で分割
      for(i = 0 ; i < cookie1.length ; i++) {
         cookie2 = cookie1[i].split("=");   //　"="で分割
         if(cookie2[0] == cookiename) {
            cookie = cookie2[1];
         }
      }
      if(cookie != "") {
         cookie3 = cookie.split("&");      //　"&"で分割
         for(i = 0 ; i < element.length ; i++) {
            for(j = 0 ; j < document.form.length ; j++) {
               if(document.form.elements[j].name == element[i]) {
                  document.form.elements[j].value = unescape(cookie3[i]);
                  break;
               }
            }
         }
      }
   }
   function setcookie() {               //　クッキー保存
      today   = new Date();            //　今日の日時
      expires   = new Date();            //　クッキーの有効期限
      expires.setTime(today.getTime() + (life * 1000 * 60 * 60 * 24));
      mon   = new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
      week   = new Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
      cookie   = cookiename + "=";         //　クッキーデータ作成
      for(i = 0 ; i < element.length ; i++) {
         for(j = 0 ; j < document.form.length ; j++) {
            if(document.form.elements[j].name == element[i]) {
               cookie += escape(document.form.elements[j].value) + "&";
               break;
            }
         }
      }
      cookie   += ";";
      cookie   += "expires=";
      cookie   += week[expires.getDay()]   +",";
      cookie   += expires.getDate()      +"-";
      cookie   += mon[expires.getMonth()]   +"-";
      cookie   += expires.getFullYear()   +" ";
      cookie   += expires.getHours()      +":";
      cookie   += expires.getMinutes()      +":";
      cookie   += expires.getSeconds()      +";";
      document.cookie   = cookie;         //　クッキー書き込み
   }