html, body {
    margin:0;
    padding:0;
    width:100%;
    height:100%;
    overflow:hidden;
    }
    #background {
    position:absolute;
    z-index:0;
    width:100%;
    height:100%;
    }
    #scroller {
    position:absolute; 
    width:100%;
    height:100%;
    top:0;
    left:0;
    overflow:auto;
    z-index:1;
    }
    div.bgimage
    {
    display: inline;
    visibility: visible;
    }
<!-- do not search -->