.nivoSlider {
    position:relative;
    background:url(../../images/loading.gif) no-repeat 50% 50%;
    margin:0;
    padding:0;
    min-width:20%; 
    max-width:100%;
    overflow: hidden;
}

.nivoSlider img {
    position:absolute;
    top:0px;
    left:0px;
    display:none;
}
.nivoSlider a {
    border:0;
    display:block;
}