public void addButton() {
XPanel panel = (XPanel)findComponent( obj, "panel" );
XButton button = new XButton( "New Button", "button" );
panel.add( button.getHTMLElement() );
button.addEvent( button.getHTMLElement().getId(), "alert", "click" );
}
public void alert() {
XMessageBox alert = new XMessageBox( "Event added dynamically to this component." );
}