});
IButton btnRemoveRow = new IButton();
btnRemoveRow.setWidth(26);
btnRemoveRow.setIcon("[ISOMORPHIC]/geomajas/silk/remove.png");
HandlerRegistration removeReg = btnRemoveRow.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
IButton sourceBtn = (IButton) event.getSource();
for (int i = 0; i < buttonPanes.size(); i++) {
IButton button = (IButton) buttonPanes.get(i).getMember(1);
if (sourceBtn.equals(button)) {