#divProcessando {
    background: url(../Img/loader.gif) no-repeat center;
    background-color: #D9D9D9;
    opacity: 0.6;
    filter: alpha(opacity=60);
    position: fixed;
    z-index: 10000;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}