#popup_background{
    position:fixed;
    left:0px;
    top:0px;
    background-image:url(/images/popup_back.png);
    width:100%;
    height:100%;
    visibility:hidden;
}

#popup_content{
    -moz-border-radius: 5px;
    position:absolute;
    visibility:hidden;
    left:0px;
    top:0px;
    padding:15px;
    background:#fff;
    width:750px;
    min-height:230px;
}

#popup_content #close_popup{
    float:right;
    display:block;
    text-decoration:none;
    cursor:pointer;
    color:#778899;
}