.wrap-loading{
    position: fixed;
    left:0;
    right:0;
    top:0;
    bottom:0;
    background: rgba(0,0,0,0.2); /*not in ie */
    filter: progid:DXImageTransform.Microsoft.Gradient(startColorstr='#20000000',endColorstr='#20000000');    /* ie */
    z-index: 999;
}

.wrap-loading div{
    position: fixed;
    top:50%;
    left:50%;
    margin-left: -50px;
    margin-top: -50px;
}

.display-none{
    display:none;
}