seeAllClassesAnchor.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
seeAllClasses = !seeAllClasses;
remove(clsesPanel.getId());
clsesPanel.removeFromParent();
Panel clsesPanel1 = createClsesPanel();
insert(0, clsesPanel1);
doLayout();
}
});