#slider {
    position:relative;
    width:500px; /* Change this to your images width */
    height:220px; /* Change this to your images height */
    background:url(http://zenit-team.ru/slider/demo/images/loading.gif) no-repeat 50% 50%;


}
#slider img {
    position:absolute;
width:500px; /* Change this to your images width */
height:220px; /* Change this to your images height */
    top:0px;
    left:0px;
    display:none;
}
#slider a {
    border:0;
    display:block;
}