overlay

overlay.css

	left: 0px; 
	top: 0px; 
	position: absolute;
	display : block;

background: #ffffff; /* Old browsers */
background: -moz-radial-gradient(center, ellipse cover,  #ffffff 0%, #4c4c4c 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#ffffff), color-stop(100%,#4c4c4c)); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  #ffffff 0%,#4c4c4c 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  #ffffff 0%,#4c4c4c 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  #ffffff 0%,#4c4c4c 100%); /* IE10+ */
background: radial-gradient(ellipse at center,  #ffffff 0%,#4c4c4c 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#4c4c4c',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */

	width : 100%;
	height : 100%;