.LEFT        { background-color: FFFFFF; background-repeat: no-repeat; 
               background-attachment: fixed; background-image: 
               url('left.jpg'); 
               background-position: bottom 100% }
.RIGHT       { background-color: FFFFFF; background-repeat: no-repeat; 
               background-attachment: fixed; background-image: 
               url('right.jpg'); 
               background-position: bottom 0% }