nsIDomDocument traversal help

Hi,
I am trying to use the MozillaBrowser from eclipse/atf. The following
code works but the dom traversal doesnt seem to work. Is there
something I am missing? Whats the best way to convert from the w3c dom
to the svg dom to get the coordinates?

Thanks.
Irfan

The output is always ...

=====

File grePath = /home/irfan/downloads/xulrunner/1.8.1.3/xulrunner
grePath.getPath = /home/irfan/downloads/xulrunner/1.8.1.3/xulrunner
org.mozilla.interfaces.nsIDOMDocument@18e3e60
HTML
null
HEAD
null
META
null
content
text/html; charset=UTF-8

=====

import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.MozillaBrowser;
import org.eclipse.swt.browser.ProgressEvent;
import org.eclipse.swt.browser.ProgressListener;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.mozilla.interfaces.nsIDOMDocument;
import org.mozilla.interfaces.nsIDOMElement;
import org.mozilla.interfaces.nsIDOMNamedNodeMap;
import org.mozilla.interfaces.nsIDOMNode;
import org.mozilla.interfaces.nsIDOMNodeList;

public class TestSwtBrowser {
    public static void main(String[] args) throws Exception {
        Display display = new Display();
        final Shell shell = new Shell(display);

        final MozillaBrowser browser = new MozillaBrowser(shell,
SWT.BORDER);
        if (browser.setUrl("http://www.google.com/")) {
            browser.addProgressListener(new ProgressListener() {
                public void changed(ProgressEvent event) {
                }

                public void completed(ProgressEvent event) {
                    nsIDOMDocument document = browser.getDocument();

                    System.out.println(document);

                    nsIDOMElement rootElement =
document.getDocumentElement();
                    printElement(rootElement);
                }
            });
        }

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
    }

    private static void printElement(nsIDOMNode node) {
        System.out.println(node.getNodeName());
        System.out.println(node.getNodeValue());

        nsIDOMNamedNodeMap attributes = node.getAttributes();

        for (long i = 0, n1 = attributes.getLength(); n1 > 0; i++,
n1--) {
            nsIDOMNode child = attributes.item(i);
            printElement(child);
        }

        nsIDOMNodeList children = node.getChildNodes();

        for (long i = 0, n1 = children.getLength(); n1 > 0; i++, n1--)
{
            nsIDOMNode child = children.item(i);
            printElement(child);
        }
    }
}