/*
body {
     height:100%;
     margin:0;
     padding:0;
}
*/
#overlay {
     visibility: hidden;
     position: absolute;
/*      position: fixed; */
     left: 0px;
     top: 0px;
     width:100%;
     height:100%;
/*      height:0; */
     text-align:center;
     z-index: 1000;
     opacity: 0.5;
     filter: alpha(opacity=50);
     background: #9ccffb;
/*     background-image:url(background_trans.png); */
}

#overlay1 {
     visibility: hidden;
     position: absolute;
/*      position: fixed; */
     width:300px;
/*      margin: 100px auto; */
     background-color: #fff;
     border:1px solid #000;
     padding:15px;
     text-align:center;
     left: 37%;
     top: 30%;
     z-index: 1100;
}