/**
 * ÄíÅ° ¼³Á¤
 * @param cookie_name ÄíÅ°¸í
 * @param cookie_value ÄíÅ°°ª
 * @param expirehours ÄíÅ° À¯È¿³¯Â¥
 */
 function setCookie( name, value, expirehours ) { 
  var todayDate = new Date(); 
  todayDate.setHours( todayDate.getHours() + expirehours ); 
  document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";" 
 }
 function closeWin() { 
  if(document.getElementById("pop_today").checked){
   setCookie( "nopopup", "done" , 24 ); 
  }
  document.getElementById('layer_pop').style.display = "none";
 }