div.hidden {
    display: none;
}

#background {
     background-image: url('/resources/images/slideshow-background.png');
     background-repeat: repeat;
     position: absolute;
     left: 0px;
     top: 0px;
     width: 100%;
     z-index: 10;
     zoom: 1;
     moz-opacity: 0; /* Mozilla */
     -khtml-opacity: 0; /* Safari */
     opacity: 0;  /* general CSS3 */
}

div.popup {
    background-color: #fff;
    position: fixed;
    min-width: 300px;
    z-index: 11;
}

div.popup div.close {
    width: 17px;
    height: 15px;
    background-image: url('/resources/images/slideshow/close.png');
}