var yourBro = new Array();
function writeSessionCookie (CookieName, CookieValue, periodType, offset) {

  expireDate = new Date ();
  offset = offset / 1;
  
  var myPeriodType = periodType;
  switch (myPeriodType.toLowerCase()) {
    case "years":
      expireDate.setYear(expireDate.getYear()+offset);
      break;
    case "months":
      expireDate.setMonth(expireDate.getMonth()+offset);
      break;
    case "days":
      expireDate.setDate(expireDate.getDate()+offset);
      break;
    case "hours":
      expireDate.setHours(expireDate.getHours()+offset);
      break;
    case "minutes":
      expireDate.setMinutes(expireDate.getMinutes()+offset);
      break;
    default:
      alert ("Invalid periodType parameter for writePersistentCookie()");
      break;
  } 
  
  document.cookie = escape(CookieName ) + "=" + escape(CookieValue) + ";" + expireDate.toGMTString() + "; path=/";
} 
function getCookieValue (cookieName) {
  var exp = new RegExp (escape(cookieName) + "=([^;]+)");
  if (exp.test (document.cookie + ";")) {
    exp.exec (document.cookie + ";");
    return unescape(RegExp.$1);
  }
  else return false;
}
function testSessionCookie () {
  document.cookie ="testSessionCookie=Enabled";
    if (getCookieValue ("testSessionCookie")=="Enabled")
  {
   return true 
  }
  else
  {
    return false;
  }
}
var okz = testSessionCookie();
if(!okz){
	alert('Per una visualizzazione corretta del sito, si prega di abilitare i cookie');
	} 
//perform checks for different browsers
if( document.all && document.getElementById && navigator.savePreferences ) { yourBro[0] = 'es5'; yourBro[1] = 'Escape 5'; }
else if( navigator.vendor == 'KDE' || ( document.childNodes && ( !document.all || navigator.accentColorName ) && !navigator.taintEnabled ) ) { yourBro[0] = 'kde'; yourBro[1] = 'Konqueror / Safari / OmniWeb 4.5+'; }
else if( navigator.__ice_version ) { yourBro[0] = 'ice'; yourBro[1] = 'ICEbrowser'; }
else if( window.ScriptEngine && ScriptEngine().indexOf( 'InScript' ) + 1 ) { if( document.createElement ) { yourBro[0] = 'ic3'; yourBro[1] = 'iCab 3+'; } else { yourBro[0] = 'icb'; yourBro[1] = 'iCab 2-'; } }
else if( navigator.userAgent.toLowerCase().indexOf( 'hotjava' ) + 1 && typeof( navigator.accentColorName ) == 'undefined' ) { yourBro[0] = 'hjv'; yourBro[1] = 'HotJava'; }
else if( document.layers && !document.classes ) { yourBro[0] = 'omn'; yourBro[1] = 'Omniweb 4.2-'; }
else if( document.layers && !navigator.mimeTypes['*'] ) { yourBro[0] = 'esc'; yourBro[1] = 'Escape 4'; }
else if( document.layers ) { yourBro[0] = 'ns4'; yourBro[1] = 'Netscape 4'; }
else if( window.opera && document.childNodes ) { yourBro[0] = 'op7'; yourBro[1] = 'Opera 7+'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'opera' ) + 1 ) { yourBro[0] = 'opr'; yourBro[1] = 'Opera 6-'; }
else if( navigator.appName.indexOf( 'WebTV' ) + 1 ) { yourBro[0] = 'wtv'; yourBro[1] = 'WebTV'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'netgem' ) + 1 ) { yourBro[0] = 'nbx'; yourBro[1] = 'Netgem NetBox'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'opentv' ) + 1 ) { yourBro[0] = 'otv'; yourBro[1] = 'OpenTV'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'ipanel' ) + 1 ) { yourBro[0] = 'ipn'; yourBro[1] = 'iPanel MicroBrowser'; }
else if( document.getElementById && !document.childNodes ) { yourBro[0] = 'clu'; yourBro[1] = 'Clue browser'; }
else if( navigator.product == 'Gecko' ) { yourBro[0] = 'gek'; yourBro[1] = 'Gecko engine (Mozilla, Netscape 6+ etc.)'; }
else if( document.getElementById ) { yourBro[0] = 'ie5'; yourBro[1] = 'Internet Explorer 5+'; }
else if( document.all ) { yourBro[0] = 'ie4'; yourBro[1] = 'Internet Explorer 4'; }
else { yourBro[0] = 'oth'; yourBro[1] = 'an unknown browser'; }

//perform checks for different operating systems
if( navigator.userAgent.toLowerCase().indexOf( 'linux' ) + 1 ) { yourBro[2] = 'lin'; yourBro[3] = 'Linux'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'x11' ) + 1 ) { yourBro[2] = 'unx'; yourBro[3] = 'Unix'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'mac' ) + 1 ) { yourBro[2] = 'mac'; yourBro[3] = 'MacOS'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'win' ) + 1 ) { yourBro[2] = 'win'; yourBro[3] = 'Windows'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'webtv' ) + 1 ) { yourBro[2] = 'wtv'; yourBro[3] = 'WebTV Platform'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'netgem' ) + 1 ) { yourBro[2] = 'ngm'; yourBro[3] = 'Netgem'; }
else if( navigator.userAgent.toLowerCase().indexOf( 'opentv' ) + 1 ) { yourBro[2] = 'otv'; yourBro[3] = 'OpenTV Platform'; }
else { yourBro[2] = 'oth'; yourBro[3] = 'an unknown operating system'; }
 
writeSessionCookie('wBr',yourBro[0],"years",20);
writeSessionCookie('wOp',yourBro[2],"years",20);