private void checkAsXML(InputSource is) throws IOException, SAXException {
        xmlParser.setCharacterHandler(sourceCode);
        sourceCode.initialize(is);
        try {
            xmlReader.parse(is);
        } catch (SAXParseException e) {
        } catch (FatalSAXException e) {
        }
    }
@param allowCss
           The allowCss to set.
src/nu/validator/validation/SimpleDocumentValidator.java