function getCookieVal (offset) {
  // return value of indicated cookie
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1) endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function getCookie (name) {
  // get named cookie from cookie jar
  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;
  }
}

function chkCookie() {
  // see if the cookie is set
  if (getCookie('MyInfertility_Subscribed')==null) {
    return false;
  } else {
    return true;
  }
}

function exitPop() {
  // give them the pop-up if the "Subscribed" cookie is not set
  // (cookie is set by the pop-up upon valid subscription submission)
  if (chkCookie() == false) {
    window.open('exitPop.html','','toolbar=no,menubar=no,location=no,height=400,width=400');
  }
}