private void _okButton_Click(object sender, EventArgs e)
{
GeckoDocument doc = _browser.WebBrowser.Document;
var body = doc.GetElementsByTagName("body").First();
GeckoHtmlElement div = doc.CreateElement("div") as GeckoHtmlElement;
div.Id = "output";
body.AppendChild(div);
_browser.RunJavaScript("gatherSettings()");
FormData = div.InnerHtml;
DialogResult = DialogResult.OK;
Close();
}