.overlay {
         position: fixed;
         z-index: 99;
         top: 0px;
         left: 0px;
         background-color: #FFFFFF;
         width: 100%;
         height: 100%;
         filter: Alpha(Opacity=70);
         opacity: 0.70;
         -moz-opacity: 0.70;
     }
     * html .overlay {
         position: absolute;
         height: expression(document.body.scrollHeight > document.body.offsetHeight ? document.body.scrollHeight : document.body.offsetHeight + 'px');
         width: expression(document.body.scrollWidth > document.body.offsetWidth ? document.body.scrollWidth : document.body.offsetWidth + 'px');
     }
     .loader {
         z-index: 100;
         position: fixed;
         width: 120px;
         margin-left: -60px;
         top: 50%;
         left: 50%;
     }
     * html .loader {
         position: absolute;
         margin-top: expression((document.body.scrollHeight / 4) + (0 - parseInt(this.offsetParent.clientHeight / 2) + (document.documentElement && document.documentElement.scrollTop || document.body.scrollTop)) + 'px');
     }