function setCookie (name, value, expires) {
  document.cookie = name + "=" + escape (value) +
    "; path=/; expires=" + expires.toGMTString();
}

function getCookie(Name) {
  var search = Name + "="
  if (document.cookie.length > 0) { // ÄíÅ°°¡ ¼³Á¤µÇ¾î ÀÖ´Ù¸é
    offset = document.cookie.indexOf(search)
    if (offset != -1) { // ÄíÅ°°¡ Á¸ÀçÇϸé
      offset += search.length
      // set index of beginning of value
      end = document.cookie.indexOf(";", offset)
      // ÄíÅ° °ªÀÇ ¸¶Áö¸· À§Ä¡ À妽º ¹øÈ£ ¼³Á¤
      if (end == -1)
        end = document.cookie.length
      return unescape(document.cookie.substring(offset, end))
    }
  }
  return "";
}
function saveid(form) {
  var expdate = new Date();
  // ±âº»ÀûÀ¸·Î 30Àϵ¿¾È ±â¾ïÇÏ°Ô ÇÔ. Àϼö¸¦ Á¶ÀýÇÏ·Á¸é * 30¿¡¼­ ¼ýÀÚ¸¦ Á¶ÀýÇÏ¸é µÊ
  if (form.checksaveid.checked)
    expdate.setTime(expdate.getTime() + 1000 * 3600 * 24 * 30); // 30ÀÏ
  else
    expdate.setTime(expdate.getTime() - 1); // ÄíÅ° »èÁ¦Á¶°Ç
  setCookie("saveid", form.mem_id.value, expdate);
}
function getid(form) {
  form.checksaveid.checked = ((form.mem_id.value = getCookie("saveid")) != "");
}