.ui-button {
    position:absolute;
    top:10px;
    right:10px;
    z-index:1000;
}

#snapshot {
    position:absolute;
    top:0;bottom:0;right:0;
    width:50%;
}

#cover {
    display: none;
    text-align: center;
    padding-top: 200px;
    background: #000000;
    opacity: 0.5;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

#cover.active{
    display: block;
}