Button downbutton = new Button("", "/common/img/ico_subir1.png");
downbutton.setHoverImage("/common/img/ico_subir.png");
downbutton.setParent(hbox);
downbutton.setSclass("icono");
downbutton.addEventListener(Events.ON_CLICK, new EventListener() {
@Override
public void onEvent(Event event) {
boolean intoHeading = intoHeading(row.getGrid());
workReportTypeModel.upFieldOrLabel(row.getValue(), intoHeading);
Util.reloadBindings(row.getGrid());