var read_cookie;

function putCookie(cookie_name,cookie_value){
  document.cookie=cookie_name+"="+cookie_value+"; expires=Monday, 04-Apr-2020 05:00:00 GMT";
}

// reads cookie CookieName and writes value into read_cookie

function getCookie (CookieName,EmptyValue) {

  var CookieSet = document.cookie.split (';');
  var CookiePieces
  
// value read_cookie will have if CookieName dontīt exist

  if (EmptyValue!=undefined) read_cookie = EmptyValue; else read_cookie = "0";

  for (var i = 0; i < CookieSet.length; i++) {
    CookiePieces = CookieSet[i].split ('=');
    if (CookiePieces[0].substring (0,1) == ' ') {
      CookiePieces[0] = CookiePieces[0].substring (1, CookiePieces[0].length);
    }
    if (CookiePieces[0] == CookieName) {
      read_cookie = eval(CookiePieces[1]);
    }
  }
}