//Javascript Document Start
var refer_game = true;
function menu_game()
{
	if(refer_game)
	{
		document.getElementById('menu_game').style.display='block';
		document.getElementById('direction_game').src='image/up.gif';
		refer_game = false;
	}
	else
	{
		document.getElementById('menu_game').style.display='none';
		document.getElementById('direction_game').src='image/down.gif';
		refer_game = true;
	}
}
var refer_app = true;
function menu_app()
{
	if(refer_app)
	{
		document.getElementById('menu_app').style.display='block';
		document.getElementById('direction_app').src='image/up.gif';
		refer_app = false;
	}
	else
	{
		document.getElementById('menu_app').style.display='none';
		document.getElementById('direction_app').src='image/down.gif';
		refer_app = true;
	}
}
var refer_manyou =true;
function menu_manyou()
{
	if(refer_manyou)
	{
		document.getElementById('menu_manyou').style.display='block';
		document.getElementById('direction_manyou').src='image/up.gif';
		refer_manyou = false;
	}
	else
	{
		document.getElementById('menu_manyou').style.display='none';
		document.getElementById('direction_manyou').src='image/down.gif';
		refer_manyou = true;
	}
}