public void clear() {
			if (ava != null)
				ui.destroy(ava);
			ava = null;
			if (rmb != null)
				ui.destroy(rmb);
			if (invb != null)
				ui.destroy(invb);
			if (chatb != null)
				ui.destroy(chatb);
			if (name != null)
				ui.destroy(name);
			if (grp != null)
				ui.destroy(grp);
			name = null;
			grp = null;
			rmb = invb = chatb = null;
			id = -1;
			atime = null;
		}