.modalPopupBG
{
    position: absolute;
    z-index: 999999998;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
    bottom: 0px;
    right: 0px;
    background-color: Black;
    -moz-opacity: .65;
    filter: alpha(opacity=65);
    opacity: .65;
}
.modalBG
{
    position: absolute;
    z-index: 999999999;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
    bottom: 0px;
    right: 0px;
    text-align: center;
    vertical-align: middle;
    background-image: url("ajax-loader.gif");
    background-repeat: no-repeat;
    background-position: center center;
}
.modalBG span
{
    height: 100%;
    display: inline-block;
    vertical-align: middle;
}