.ajax-loader{
  background: url('../images/ajax-loader.svg') 50% 50% transparent no-repeat;
  position: absolute;
  left:0; top:0;
  width:100%; height:100%;
  padding:0; margin:0;
  z-index: 2;
  opacity: 1;
  filter: alpha(opacity=100);
}

.ajax-loader-mask {
  background-color: #9F9F9F;
  display: block;
  position: absolute;
  left:0; top:0;
  width:100%; height:100%;
  padding:0; margin:0;
  opacity: 0.4;
  filter: alpha(opacity=40);
  z-index: 1;
}