function toggleMenu(menuId) {
	var selectedMenu = document.getElementById(menuId);
	var selectedMenuBlock = document.getElementById("sub_" + menuId);
	
	if (selectedMenuBlock.className == "showSubMenu") {
		selectedMenu.className = "tertMenu_Arrow";
		selectedMenuBlock.className = "hideSubMenu";
	} else {
		selectedMenuBlock.className = "showSubMenu";
		selectedMenu.className = "tertMenu_Arrow_on";
	}
}