function creaCookie(nomeCookie,valoreCookie,durataCookie)
{
  var scadenzaCookie = new Date();
  var dataAttuale = new Date();
  scadenzaCookie.setTime(dataAttuale.getTime() + (parseInt(durataCookie) * 60000));
  document.cookie = nomeCookie + '=' + escape(valoreCookie) + '; expires=' + scadenzaCookie.toGMTString() + '; path = /';
}

function leggiCookie(nomeCookie)
{
  if (document.cookie.length > 0)
  {
    var start = document.cookie.indexOf(nomeCookie + "=");
    if (start != -1)
    {
      start = start + nomeCookie.length + 1;
      var end = document.cookie.indexOf(";",start);
      if (end == -1) end = document.cookie.length;
      return unescape(document.cookie.substring(start,end));
    }
	else
	{
       return "";
    }
  }
  return "";
}

function eliminaCookie(nomeCookie)
{
  creaCookie(nomeCookie,'',-1);
}