.hidden {
    display: none;
  }

  /* Pop-up message and fading background */
  #opaco {
     background-color: #000000;
     left: 0;
     -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=70)";
     filter:progid:DXImageTransform.Microsoft.Alpha(opacity = 70); 
     filter: alpha(opacity=70);
     moz-opacity: 0; 
     -khtml-opacity: 0;
     opacity: 0; 
     position: absolute;
     top: 0;
     width: 100%;
     z-index: 999;
   }

  #popup {
     position: fixed;
     left:50%;
     top:50%;
     min-width: 300px;
     z-index: 999;
	 border:1px solid #5378A6;
	 
	background-image: url("/blocks/regform/img/bg.jpg");
	background-repeat:repeat-x;
	background-color:#FFFFFF;
	background-position:bottom;
  }