var originalClassTag;

function navOver(navItem) {
	var hoverClass = navItem.parentNode.getAttribute('id') + "ItemHover";
	originalClassTag = navItem.className;
	var appendedClassTag = originalClassTag + " " + hoverClass;
	//alert(appendedClassTag);
	navItem.className = appendedClassTag;
}

function navOut(navItem) {
	navItem.className = originalClassTag;
}