/* the overlayed element */
.simple_overlay {

    /* must be initially hidden */
    display:none;

    /* place overlay on top of other elements */
    z-index:10000;

    /* styling */
    background-color:#fff;
    top: 50%;
    left: 50%;
    width:700px;
    min-height:500px;
    overflow-y:auto; 
    overflow-x:hidden;    
    border:2px solid #666;
    margin-top:150px; /* negative half the size of height */ 
    margin-left:-50px; /* negative half the size of width */     

    /* CSS3 styling for latest browsers */
    -moz-box-shadow:0 0 90px 5px #000;
    -webkit-box-shadow: 0 0 90px #000;
}

/* close button positioned on upper right corner */
.simple_overlay .close {
    background-image:url(/css/close.png);
    position:absolute;
    right:-2px;
    top:-5px;
    cursor:pointer;
    height:35px;
    width:35px;
}