function hover(id) {
	var myElm = document.getElementById(id);

	if (myElm.className == "menu_span_unhovered") {
		myElm.style.background = "#999";
	}
}


function unHover(id) {
	var myElm = document.getElementById(id);
		
	if (myElm.className == "menu_span_unhovered") 
		myElm.style.background = "transparent";
}