radial-overly

.map-radial-overlay {
display: block;
position: absolute;
top: 0;
bottom: 0;
left: 0;
width: 100%;
opacity: .7;
background-color: transparent;
background-image: -o-radial-gradient(center,circle,transparent 5%,#000 50%);
background-image: -ms-radial-gradient(center,circle,transparent 5%,#000 50%);
background-image: -moz-radial-gradient(center,circle,transparent 5%,#000 50%);
background-image: -webkit-radial-gradient(center,circle,transparent 5%,#000 50%);
background-image: radial-gradient(center,circle,transparent 5%,#000 50%);
padding-left: 516px;
z-index: 1000;
background-color: #000\9;
filter: alpha(opacity=15);
opacity: .15 \9;
}