var url = 'http://www.nuala-art.nl/captcha/checkcaptcha.php?code=';
        var captchaOK = 2;  // 2 - not yet checked, 1 - correct, 0 - failed
        
        function getHTTPObject()
        {
        try {
        req = new XMLHttpRequest();
          } catch (err1)
          {
          try {
          req = new ActiveXObject("Msxml12.XMLHTTP");
          } catch (err2)
          {
          try {
            req = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (err3)
            {
	req = false;
            }
          }
	}
        return req;
	}
        
        var http = getHTTPObject(); // We create the HTTP Object        

function handleHttpResponse() {
        if (http.readyState == 4) {
            captchaOK = http.responseText;
            if(captchaOK =='1') {
              document.getElementById('captchacode').className = 'capCodeActive';
              document.getElementById('captchacode').disabled = true;
              document.getElementById('frmAction').value = 'sendFrmOK';
              return true;
           }
        }
      }

function checkcode(field) {
thecode = field.value;
  
 http.open("GET", url + escape(thecode), true);
 http.onreadystatechange = handleHttpResponse;
 http.send(null);
}