// JavaScript Document
function menu_show() {
	document.getElementById('menu_oshinagaki').style.visibility='visible';
	document.getElementById('menu_2').style.backgroundPosition='-99px -36px';
}
function menu_hide() {
	document.getElementById('menu_oshinagaki').style.visibility='hidden';
	document.getElementById('menu_2').style.backgroundPosition='-99px 0';
}