});
footerStrip.addMember(okButton);
// track errors in grid - enable/disable OK button accordingly
// I tried many ways to get this to work right - this is what I came up with
memberValuesGrid.addRowEditorExitHandler(new RowEditorExitHandler() {
public void onRowEditorExit(RowEditorExitEvent event) {
memberValuesGrid.validateRow(event.getRowNum());
if (memberValuesGrid.hasErrors()) {
okButton.disable();
} else {