body {
text-align: center;
background-color: #666666;
}

#splash {
margin: 0px auto;
width: 550px;
}

#art a {
width: 550px;
height: 390px;
float: left;
background: url("images/splash.gif") no-repeat top left;
}

#art a:hover {
background-position: right;
}