.maindiv
{
   height:650px;
   width:970px;;
   z-index:50;
   opacity:0.6;
   MozOpacity : 0.6;
   KhtmlOpacity : 0.6;
   filter: alpha(opacity = 60);
   background-color:#FFFFFF;
   border:2px solid #004F7F;
   margin-top:50px;
   left:140px;
 }

 .themediv
 {
  border:2px solid #FFF;
  padding:10px;

  z-index:50;
  opacity:0.6;
  MozOpacity : 0.6;
  KhtmlOpacity : 0.6;
  filter: alpha(opacity = 60);
  background-color:#69C8E8;
  top:50%;
  left:50%;
  text-align:center;
  font-size:20px;
  font-weight:normal;
  color:#FFF;
 }