public String showWeblogCalendar( boolean big, String cat ) {
if (OldWeblogPageModel.VELOCITY_NULL.equals(cat)) cat = null;
String ret = null;
try {
// setup weblog calendar model
CalendarModel model = null;
if ( big ) {
model = new BigWeblogCalendarModel(mPageRequest, cat);
} else {
model = new WeblogCalendarModel(mPageRequest, cat);
}