#mask {  position:absolute;  left:0;  top:0;  z-index:70;  background-color:#000;  display:none;}  

#boxes .window {  position:fixed;  left:0;  top:0;  width:440px;  height:200px;  display:none;  z-index:80;  padding:20px;}

#boxes #dialog {  width:750px;   height:500px;  padding:10px;  background-color:#ffffff; overflow:auto}
#dialog-header {
    position:fixed;
    height:30px;
    width:100%;
    background:#666;
    z-index:501;
    display:none;
    border-bottom:1px solid #ccc;
}
.close_button{display:block; text-align:right;}

#sub-mask {  position:absolute;  left:0;  top:0;  z-index:70;  background-color:#000;  display:none; z-index:500;}

#sub-boxes .sub-window {  position:fixed;  left:0;  top:0;  width:440px;  height:200px;  display:none;  z-index:1580;  padding:20px;}

#sub-boxes #sub-dialog {  width:750px;   height:500px;  padding:10px;  background-color:#ffffff; overflow: auto}