#overlay {
     visibility: hidden;
     position: absolute;
     left: 0px;
     top: 0px;
     width:100%;
     height:2000px;
     text-align:center;
     z-index: 1000;
     background-image:url(images/overlay.png);
}

#overlaymain {
     width:700px;
     margin: 100px auto;
     text-align:center;
}
#overlay div {
     text-align:left;
}