private final LayoutContainer createSelectionButtons() {
LayoutContainer panel = new LayoutContainer();
panel.setLayout(new RowLayout(Orientation.HORIZONTAL));
panel.setSize(300, 22); //have to hard code to make it visible in FF...
RowData layoutData = new RowData();
layoutData.setMargins(new Margins(0, 5, 0, 0));
addButton(BTN_ONE, BTN_ONE, panel, layoutData, false, constants.showSelectLevel1());
addButton(BTN_TWO, BTN_TWO, panel, layoutData, false, constants.showSelectLevel2());
addButton(BTN_THREE, BTN_THREE, panel, layoutData, false, constants.showSelectLevel3());
addButton(BTN_FOUR, BTN_FOUR, panel, layoutData, false, constants.showSelectLevel4());
addButton(BTN_FIVE, BTN_FIVE, panel, layoutData, false, constants.showSelectLevel5());
RowData spaceData = new RowData();
spaceData.setMargins(new Margins(0, 2, 0, 0));
panel.add(new LabelField(), spaceData);
addButton(BTN_LEAVES, constants.shortHandForBaseElements(), panel, layoutData, false, constants.showSelectBase());
RowData spaceData2 = new RowData();
spaceData2.setMargins(new Margins(0, 5, 0, 0));
panel.add(new LabelField(), spaceData2);
addButton(BTN_ALL, constants.shortHandForAllElements(), panel, layoutData, false, constants.showSelectAll());
return panel;
}