#intr-img-bg {
    background: transparent;
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#7F000000,endColorstr=#7F000000)";
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#7F000000,endColorstr=#7F000000);
    zoom: 1;
    background: rgba(0,0,0,0.5);
}