#side1 a { background-image: url(images/listings/20070417155216_15_1_side1.jpg); }
#side1 a:hover { background-image: url(images/listings/20070417155216_15_1_side1over.jpg); }
#side2 a { background-image: url(images/listings/20070417155228_15_2_side2.jpg); }
#side2 a:hover { background-image: url(images/listings/20070417155228_15_2_side2over.jpg); }