body {background: black url(bigben-bg.jpg) 0 0 no-repeat fixed;}
div#content {background: #468 url(bigben-blue.jpg) 0 0 no-repeat fixed;}
div#links a {background: transparent url(bigben-fade.jpg) 0 0 no-repeat fixed;}
div#links a:hover {background: transparent url(bigben-wash.jpg) 0 0 no-repeat fixed;}