$(function() {
	$('.houseNav').hover(
		function() {
			itemID = $(this).attr('id');
			$('#'+itemID).css({'background-image' : 'url(/images/' + itemID + '-on.png)'});
		},
		function() {
			itemID = $(this).attr('id');
			$('#'+itemID).css({'background-image' : 'url(/images/' + itemID + '-off.png)'});
		}
	);
});