function getCaptcha(datasource,divID) {
  if (window.XMLHttpRequest) {
    var server1 = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    var server1 = new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (server1) {
    var obj = document.getElementById(divID);
    server1.open("GET",datasource);
    server1.onreadystatechange = function () {
      if ((server1.readyState ==4) && (server1.status == 200)) {
        obj.innerHTML = server1.responseText;
      }
    }
    server1.send(null);
  }
}

function checkCaptcha() {
  var captcha = document.estimate.captcha.value;
  var captchax = document.estimate.captchax.value;
  var yourname = document.estimate.YourName.value;
  var yourname1 = yourname.substring(0,1);
  var n = captcha.substring(0,1);

  if (yourname1 != n) {
    var temp1 = "The security code and first letter of your name was entered incorrectly. \n\nPlease try again.";
    alert(temp1);
    return false;
  }

  var c1 = captcha.substring(1,6);
  if (c1  != captchax ) {
    var temp1 = "The security code and first letter of your name was entered incorrectly. \n\nPlease try again.";
    alert(temp1);
    return false;
  }

  return true;
}