function selectMenuItem(imgID) {
	new Effect.Appear(imgID, {duration: 0.2});
	Element.addClassName(imgID + '_item', 'focusedItem');
}

function deselectMenuItem(imgID) {
	new Effect.Fade(imgID, {duration: 0.3});
	Element.removeClassName(imgID + '_item', 'focusedItem');
}