if (sc != null) {
if (currentComponent != null) {
remove (currentComponent.asComponent());
}
mc = sc.mc;
QTComponent qtc = QTFactory.makeQTComponent(mc);
currentComponent = qtc;
mc.goToTime(new TimeRecord (mc.getTimeScale(), startTime));
add (currentComponent.asComponent(),
BorderLayout.CENTER);
//mc.validate();