case Event.ONMOUSEOUT: {
Element e = DOM.eventGetFromElement(event);
if (e != null) {
Cell cell = cellMap.get(e);
if (cell != null) {
cell.removeStyleName(Styles.HIGHLIGHTED_CELL);
Element target = DOM.eventGetToElement(event);
if (target != null && cellMap.get(target) == null) {
updateHighlightedDate(null);
}
}