#mask {
    position:fixed;
    left:0;
    top:0;
    z-index:9000;
    background-color:#000;
    display:none;
    }
  
#box .window {
    position:fixed;
    left:0;
    top:0;
    display:none;
    z-index:9999;
    padding:20px;
    }  
#box .dialog {
    width:700px; 
    padding:10px;
    background-color:#ffffff;
    }
#box .close {
    margin-top:-4px;
    color:#999;
    text-decoration:none;
    }
#box .close:hover {
    color:#666;
    border:1px solid #666;
    background:#e5e5e5;
    text-decoration:none;
    }