function openPicture(url)
{
    leftVal = (screen.width - 900) / 2;
    topVal = (screen.height - 700) / 2;

    remote = window.open("", "", "resizable=yes,status=no, scrollbars=1,width=900,height=700,left="+leftVal+",top="+topVal);
    remote.location.href = url;;
    if (!remote.opener)
        remote.opener = self;
    if (remote.opener == null)
        remote.opener = window;

    remote.opener.name = "opener";
}