.loading_msg {
    color: rgba(64,64,64,1);
    font-size: 30px;
    position:fixed;
    top:0;right:0;bottom:0;left:0;
    line-height: 3em;
    margin:auto;
    max-width: 100%;
    width:500px;
    height:3em;
    text-align: center;
    z-index:12000;
}
.loading_wheel{
    position:fixed;
    top:0;right:0;bottom:0;left:0;
    margin:auto;
    width:66px;
    height:66px;
    display:none;
    z-index:11000;
}

#overlay {
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(255,255,255,0.50);
    z-index:10000;
    display: none;
}

@-webkit-keyframes loading_msg {
    from{opacity:0.8;}
    to{opacity:0.5;}
}
@keyframes loading_msg {
    from{opacity:0.8;}
    to{opacity:0.5;}
}