function doSubmit() {
  var requestBody = "";
  var oXmlHttp = zXmlHttp.createRequest();
  oXmlHttp.open ("post","newsletter.php",false);
  oXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  requestBody += "thecall="+document.getElementById("thecall").value;
  requestBody += "&thedest="+document.getElementById("thedest").value;
  oXmlHttp.send(requestBody); 
  if (oXmlHttp.responseText>="result: 0") {
    window.location = "index.html";
    var comm = window.open("thankyou.html","comm","width=560,height=200");
  } else {
    // zzz
    alert (oXmlHttp.responseText);
    var comm = window.open("oops.html","comm","width=560,height=200,status=no,menubar=no");
  }
}