html{overflow-x:auto;overflow-y:hidden;width:100%;height:100%} .page_overlay{position:absolute;top:0px;left:0px;width:100%;height:100%;background-color:#666;z-index:1001;-moz-opacity:0.8;opacity:.80;filter:alpha(opacity=80);display:block} .content_overlay{position:absolute;margin-top:50px;margin-left:-225px;text-align:center;width:500px;height:310px;left:50%;border:1px solid #000;background-color:#fff;z-index:1002;overflow:auto;display:block} .content_overlay_header{background-color:#CCC;padding:5px;border-bottom:1px solid #000;display:block} .content_overlay_main{padding:5px;text-align:left;display:block}