function GetCookie(name) { 
  if (result = document.cookie.match(new RegExp( name + "=([^;]*)"))) 
    return unescape(result[1]);
  else return "";
} 

function DelCookie(name) { 
  data = new Date(1900,1,1);  // la data per cancellare il cookie
  data = data.valueOf();  // la data in millisecondi
  SetCookie(name, "", data);
} 

function SetCookie(name, value, expires, path, domain, secure) { 
  cookie = name + "=" + escape(value);
  if (expires) cookie += "; expires=" + toCookieDate(expires);
  if (path) cookie += "; path=" + path;
  if (domain) cookie += "; domain=" + domain;
  if (secure) cookie += "; secure";
  document.cookie = cookie;
} 

function lpad(testo, car, len) {
  testo = testo.toString()
  while(testo.length<len) testo = "" + car + testo
  return testo;
}

function toCookieDate( data ) {
  data = new Date(data);
  week = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
  months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
  result = week[data.getDay()] + ", " + 
         lpad(data.getDate(), "0", 2) + "-" + 
         months[data.getMonth()] + "-" +
         lpad(data.getYear(), "0", 2) + " " +
         lpad(data.getHours(), "0", 2) + ":" +
         lpad(data.getMinutes(), "0", 2) + ":" +
         lpad(data.getSeconds(), "0", 2) + " GMT";
  return result;
}