#qtGallery {
    width: 1024px; 
    height: 780px;
    margin: 0 auto;
    position: fixed;
    top: 0;
    background: url(../images/qtGalleryBg.jpg) 50% 0 no-repeat;
}

#qtStage {
    width: 640px;
    height: 360px;
    margin: 0 auto;
    position: relative;
    top: 150px;
}

#playBtn {
    width: 235px;
    height: 225px;
    margin: 60px auto 0 auto;
    background: url(../images/playButton.png) 0 0 no-repeat;
}

#playBtn:hover {
    background-position: -236px 0;
}

#playBtn:active {
    background-position: -469px 0;
}