.ajax-mask {
  background: rgba(255,255,255,0.6);
  z-index:999999999;
}

.ajax-mask .loading {
  width: 50px;
  height: 50px;
  background: #333 url('loading_mask.gif') center center no-repeat;
  border-radius: 3px;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  position: fixed;
  left:50%;
  margin-left:-25px;
  top:50%;
  margin-top: -25px;
  opacity: 0.9;
  -moz-opacity: 0.9;
  
}
.ajax-mask .message {
    background:#333;
    font-size:14px;
    text-align:center;
    color:#fff;
    opacity:0.9;
    width:300px;
    height:30px;
    line-height:30px;
    position: fixed;
    left:50%;
    margin-left:-150px;
    top:50%;
    margin-top: 30px;
}