#overlay {
    background-color:#ffffff;
	filter:alpha(opacity=90);
	-moz-opacity:0.9;
	-khtml-opacity: 0.9;
	opacity: 0.9;
    left:0;
    top:0;
    position:absolute;
    width:100%;
    height: 300px;
    z-index:90;
}

#overlay_content {
    position:absolute;
    left:0;
    top:0;
    text-align: center;
    width:100%;
    z-index:100;
}