.block-layered-nav,
.amshopbyamer-page-container,
.amshopbyamer-filters-top {
    position: relative;
}

.amshopbyamer-overlay {
    background-color: #FFFFFF;
    height: 100%;
    left: 0;
    opacity: 0.5;
    filter: alpha(opacity=50);
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 555;
}

.amshopbyamer-overlay img {
    top: 100px;
    left: 45%;
    display: block;
    position: absolute;
}

.amshopbyamer-overlay div {
    margin: 0 auto;
    display: block;
    width: 300px;
    height: 200px;
    background: url('../images/ajax-loader.gif') 50% 50% no-repeat;
    background-size: 50px;
}