#overlay{ 
    background-image: url(/img/overlay.png);
    position: absolute;
    top: 0px;
    left: 0px;
    z-index: 90000000;
    width: 100%;
    height: 100%;
	overflow: hidden;
}

* html #overlay{
    background-color: #333;
    background-color: transparent;
    background-image: url(blank.gif);
    filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(
        src="/img/overlay.png", sizingMethod="scale");
}