function mj_on(id) {
	var name;
	var div;
	if ((id > 0) && (id<=3)) {
		name='mj_'+id;
		div=document.getElementById(name);
		div.style.backgroundImage='url(./images/layout/mj_08.png)';
	}
}
function mj_out(id) {
	var name;
	var div;
	if ((id > 0) && (id<=3)) {
		name='mj_'+id;
		div=document.getElementById(name);
		div.style.backgroundImage='url(./images/layout/mj_06.png)';
	}
}