public Timeline(String id, IModel model) {
super(id, new CompoundPropertyModel(model));
List<BandInfoParameters> bandInfo = new ArrayList<BandInfoParameters>();
BandInfoParameters upperBand = new BandInfoParameters();
upperBand.setIntervalPixels(70);
upperBand.setHighlight(true);
bandInfo.add(upperBand);
BandInfoParameters lowerBand = new BandInfoParameters();
lowerBand.setIntervalUnit(DateTime.YEAR);
lowerBand.setIntervalPixels(200);
lowerBand.setWidth("200px");
bandInfo.add(lowerBand);
init(id, model, bandInfo);
}