#loading-img {
  background: url(/img/ajax-loader.gif) center center no-repeat;
  height: 100%;
  z-index: 11000;
}

.overlay {
  background: #e9e9e9;
  display: none;
  position: absolute;
  z-index: 11000;
  height:100%;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  opacity: 0.5;
}