function preload()
{
	MenuNum = 14;	//メニュー数変更はここ
	MenuImgArray = new Array(MenuNum);
	for (i = 0; i < MenuNum; i++) {
		MenuImgArray[i] = new Image();
		MenuImgArray[i].src = "botanimage/s_menu"+((i+1<10)?'0':'')+(i+1)+".gif";
	}
}

function swap_menu(name, number)
{
	document.images[name].src = MenuImgArray[number].src;
}