#modalWindow {
    display: none;
    position: absolute;
    z-index: 301;
    color: #fff;
    text-align: center;
}

#modalOverlay {
    display: none;
    position: absolute;
    top: 0;   
    right: 0;   
    bottom: 0;   
    left: 0;   
    height: 100%;   
    width: 100%;   
    margin: 0;   
    padding: 0;   
    background: #000;   
    opacity: .75;
    filter: alpha(opacity=75);   
    -moz-opacity: 0.75;  
    z-index: 300; 
}