function menu(oMenuitem) {
	oMenuitem.style.background = "url(" + m_bg03.src + ") no-repeat top right";
	oMenuitem.style.color = "#fff";
	oMenuitem.parentNode.style.background = "#aaa url(" + m_bg02.src + ") no-repeat";
}

function erase(oMenuitem) {
	oMenuitem.style.background = "none";
	oMenuitem.style.color = "#555";
	oMenuitem.parentNode.style.background = "url(img/m_bg_04.gif) no-repeat";
}