var http_request = false;
   var DATO=false;
   var PNR="";
   var result="";


   function validacaptcha() {
   PNR=document._DominoForm;
      http_request = false;
            var parameters=PNR.recaptcha_challenge_field.value +
                    "&D&" + PNR.recaptcha_response_field.value;
                    var url='/noteros.nsf/validacaptcha'
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
     http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, false);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters)   
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
          result = http_request.responseText;        
         } else {
            alert('There was a problem with the request.');
         }
      }
     if (result=="true\n"){
document._DominoForm.submit()
}
else
{alert("Error en Captcha");
Recaptcha.reload();
}
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
          result = http_request.responseText;
           PNR.texto.value = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }