.overlay {
	position: fixed;
	left: 0;
	top: 0;
	margin: auto;
	height: 100%;
	width: 100%;
	z-index: 9990;
	background: url("ajax-loader.gif") no-repeat scroll center white;
	background-color: #ffffff;
	/* for IE */
	filter: alpha(opacity=60);
	/* CSS3 standard */
	opacity: 0.6;
}