int height1 = getHeight();
int height2 = getPreferredHeight(-1, true);
expandTransition = new ExpansionTransition(height1, height2,
false, EXPANSION_DURATION, EXPANSION_RATE);
expandTransition.start(new TransitionListener() {
public void transitionCompleted(Transition transition) {
ApplicationContext.queueCallback(new Runnable() {
public void run() {
rollup.scrollAreaToVisible(0, 0, rollup.getWidth(), rollup.getHeight());
}