#gallery_container{
    z-index:10;
    background-color:white;
    position:absolute;
    width:100px;
    height:100px;
    left:50%;
}

#gallery_overlay{
    opacity:0;
    alpha(opacity=0);
    display:none;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 90;
    width: 100%;
    height: 500px;
}

#gallery_preview{
    position: relative;
    width:auto;
    height:auto;
}

#gallery_btn_close{
    position:absolute;
    right:0;
}