function SetCookie (name, value)
{
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;

  document.cookie = name + "=" + escape (value) +
    ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}


function GetCookie (name)
{
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;

  while (i < clen)
  {
    var j = i + alen;

    if (document.cookie.substring(i, j) == arg)
    {
      return getCookieVal (j);
    }

    i = document.cookie.indexOf(" ", i) + 1;

    if (i == 0) break;
  }

  return null;
}

function getCookieVal (offset)
{
  var endstr = document.cookie.indexOf (";", offset);

  if (endstr == -1)
  {
    endstr = document.cookie.length;
  }

  return unescape(document.cookie.substring(offset, endstr));
}


function creaSuccessioneBanner()
{
  numeroCasuale = Math.ceil(Math.random() * 5);

  valore = GetCookie('numeroSuccessioneBanner');

  if(valore == null)
  {
    SetCookie('numeroSuccessioneBanner',numeroCasuale);
    gestioneBanner(numeroCasuale);
  }
  else
  {
    valore = Number(valore) + 1;
    if(valore >= 6)
    {
      valore = 1;
    }
    SetCookie('numeroSuccessioneBanner',valore);
    gestioneBanner(valore);
  }
}


function gestioneBanner(numBanner)
{

  //alert("num = " + numBanner);
  if(numBanner == 1)
  {
    document.getElementById("divBannerOat").style.visibility="visible";
    document.getElementById("divBannerOat").style.position="static";
    document.getElementById("divBannerMediatica").style.visibility="hidden";
    document.getElementById("divBannerMediatica").style.position="absolute";
    document.getElementById("divBannerCapodanno").style.visibility="hidden";
    document.getElementById("divBannerCapodanno").style.position="absolute";
    document.getElementById("divBannerMetoda").style.visibility="hidden";
    document.getElementById("divBannerMetoda").style.position="absolute";
    document.getElementById("divBannerTelepark").style.visibility="hidden";
    document.getElementById("divBannerTelepark").style.position="absolute";
  }
  if(numBanner == 2)
  {
    document.getElementById("divBannerOat").style.visibility="hidden";
    document.getElementById("divBannerOat").style.position="absolute";
    document.getElementById("divBannerMediatica").style.visibility="visible";
    document.getElementById("divBannerMediatica").style.position="static";
    document.getElementById("divBannerCapodanno").style.visibility="hidden";
    document.getElementById("divBannerCapodanno").style.position="absolute";
    document.getElementById("divBannerMetoda").style.visibility="hidden";
    document.getElementById("divBannerMetoda").style.position="absolute";
    document.getElementById("divBannerTelepark").style.visibility="hidden";
    document.getElementById("divBannerTelepark").style.position="absolute";

  }
  if(numBanner == 3)
  {
    document.getElementById("divBannerOat").style.visibility="hidden";
    document.getElementById("divBannerOat").style.position="absolute";
    document.getElementById("divBannerMediatica").style.visibility="hidden";
    document.getElementById("divBannerMediatica").style.position="absolute";
    document.getElementById("divBannerCapodanno").style.visibility="visible";
    document.getElementById("divBannerCapodanno").style.position="static";
    document.getElementById("divBannerMetoda").style.visibility="hidden";
    document.getElementById("divBannerMetoda").style.position="absolute";
    document.getElementById("divBannerTelepark").style.visibility="hidden";
    document.getElementById("divBannerTelepark").style.position="absolute";
  }
  if(numBanner == 4)
  {
    document.getElementById("divBannerOat").style.visibility="hidden";
    document.getElementById("divBannerOat").style.position="absolute";
    document.getElementById("divBannerMediatica").style.visibility="hidden";
    document.getElementById("divBannerMediatica").style.position="absolute";
    document.getElementById("divBannerCapodanno").style.visibility="hidden";
    document.getElementById("divBannerCapodanno").style.position="absolute";
    document.getElementById("divBannerMetoda").style.visibility="visible";
    document.getElementById("divBannerMetoda").style.position="static";
    document.getElementById("divBannerTelepark").style.visibility="hidden";
    document.getElementById("divBannerTelepark").style.position="absolute";
  }
  if(numBanner == 5)
  {
    document.getElementById("divBannerOat").style.visibility="hidden";
    document.getElementById("divBannerOat").style.position="absolute";
    document.getElementById("divBannerMediatica").style.visibility="hidden";
    document.getElementById("divBannerMediatica").style.position="absolute";
    document.getElementById("divBannerCapodanno").style.visibility="hidden";
    document.getElementById("divBannerCapodanno").style.position="absolute";
    document.getElementById("divBannerMetoda").style.visibility="hidden";
    document.getElementById("divBannerMetoda").style.position="absolute";
    document.getElementById("divBannerTelepark").style.visibility="visible";
    document.getElementById("divBannerTelepark").style.position="static";
  }
}