#certificateList{
  max-height:520px;
}

.hidden {
  display:none;
}

#loadingDiv{
  position:fixed;
  top:0px;
  right:0px;
  width:100%;
  height:100%;
  background-color:#666; 
  background-repeat:no-repeat;
  background-image: url("../img/ajax-loader.gif");
  background-position:center;
  z-index:10000000;  
  opacity: 0.4;
  filter: alpha(opacity=40); 
}