public void setWeekOfYearVisible(boolean weekOfYearVisible) {
		if (weekOfYearVisible == this.weekOfYearVisible) {
			return;
		} else if (weekOfYearVisible) {
			add(weekPanel, BorderLayout.WEST);
		} else {
			remove(weekPanel);
		}

		this.weekOfYearVisible = weekOfYearVisible;
		validate();
		dayPanel.validate();
	}