function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  if (navigator.cookieEnabled == false) {alert('kein cookie!!!');}
  //document.cookie = name+"="+value+expires+"; path=/";
  document.cookie = name + "=" + value + ";" + expires + ";";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}


// in popup: 
// createCookie("emmidisclaimer",'ok',0.05);

// in opener: 
// var cookie = readCookie("emmidisclaimer");
// //--popup booten
// if (!cookie) {alert(cookie);}