protected void onSelect(Object obj) {
final Linkcheck linkcheck = (Linkcheck) obj;
final Content content = (Content) Nodes.getByPath(linkcheck.getPath());
if (content != null) {
NodeEditor editor = Registry.getEditor(content);
editor.addChangeListener(new ActionListener() {
public void actionPerformed(Event event) {
Linkchecker.clear(linkcheck.getPath());
Linkchecker.check(content);
refresh();
}