function overItem( itemNum, heartType ) {
	document.getElementById( itemNum ).src = 'pics/menu_button_on.GIF';
	document.getElementById( 'indexHeart' ).src = heartType;
}

function offItem( itemNum, heartType ) {
	document.getElementById( itemNum ).src = 'pics/menu_button_off.GIF';
	document.getElementById( 'indexHeart' ).src = 'pics/normal_heart.gif';
}