function menu_over(td) {
		tag = document.getElementById(td);
		tag.style.backgroundImage="url('nats_images/template/bg-menu-over.gif')";
		tag.style.color = '#FFFFFF';
	}
	function menu_out(td) {
		tag = document.getElementById(td);
		tag.style.backgroundImage="url('')";
		tag.style.color = '#021826';
	}