#backgroundPopup {  
    display:none;  
    position:fixed;  
    _position:absolute; /* hack for internet explorer 6*/
    height:100%;  
    width:100%;  
    top:0;  
    left:0;  
    background:#000000;  
    border:1px solid #cecece;  
    z-index:1;  
}

#popupElement {  
    display:none;  
    position:fixed;  
    _position:absolute; /* hack for internet explorer 6*/
/*        height:10em;  */
    width:34em;
    top: 30%;
    left: 50%;
    margin-left: -17em; /*set to a negative number 1/2 of your width*/
    background:#FFFFFF;  
    border:2px solid #cecece;  
    z-index:2;  
    padding:12px;  
    font-size:13px;  
}

#popupElementClose {
    cursor: pointer;  
    text-decoration:none;
    font-size:14px;  
    line-height:14px;  
    right:6px;  
    top:4px;  
    position:absolute;  
    color:#000000;  
    font-weight:700;  
    display:block;  
}