var resumes;
jQuery.ajax({
    type: "GET",
    url: "http://resumemanagerrestserver.juanwolf.cloudbees.net/?callback=?",
    contentType: "text/plain; charset=utf-8 ",
    dataType: "xml",
    success: function (data, status, jqXHR) {
        resumes = data;
    },
    error: function (jqXHR, status) {
        // error handler
    }
});

function getResumes() {
    var resumes;
    var url = 'http://resumemanagerrestserver.juanwolf.cloudbees.net/?callback=?';

    var xhr = createCORSRequest('GET', url);
    xhr.onreadystatechange = function() {if (xhr.readyState==4) alert("It worked!");};
    xhr.setRequestHeader("Content-type", "application/xml");
    xhr.setRequestHeader("Connection", "close");
    if (!xhr) {
      alert('CORS not supported');
      return;
    }

    // Response handlers.
    xhr.onload = function() {
      resumes = xhr.responseText;
      alert('Response from CORS request to ' + url + ': ' + resumes);
    };

    xhr.onerror = function() {
      $('#errorPopupLink').get(0).click();
    };

    xhr.send();
    return resumes;

}

XML Parsing Error: no element found Location: moz-nullprincipal:{d9ee4013-542d-4f65-a310-e1719d99bcae} Line Number 1, Column 1