#modalMask{display:none;position:fixed;left:0;top:0;width:100%;height:100%;z-index:999;background:#000000;background:transparent\9;background:rgba(0, 0, 0, 0.6);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#99000000', endColorstr='#99000000');zoom:1;}#modalMask:nth-child(n){filter:none;}#alertBox{display:none;width:450px;background:#ececec;padding:10px;border:2px solid #ddd;float:left;position:fixed;top:50%;left:50%;z-index:99999;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;behavior:url("/css/PIE-1.0.0.htc");-pie-track-hover:false;-pie-track-active:false;}#alertBox input.btn{width:50%;float:left;}#alertBox input.btn:hover{background-color:#BBB;}