.box_window{
  width:500px;
  display: none; 
  position:fixed;
  top:20%;
  left:50%;
  margin-left:-250px;
  z-index:11;
  background: #fff;
  display:none;
  padding:10px;
  border-radius: 4px;
}
.box_window_in {
  position: relative;
  overflow-y:auto;
}
.box_title {
  position: absolute;
  left: 0px;
  top: -30px;
  color: #fff;
}
.bw_close{
  position:absolute;
  background: url('img/popup_close.png') left bottom no-repeat;
  width: 16px;
  height: 16px;
  right:10px;
  cursor: pointer;
  
  z-index: 2;
}
.bw_close:hover {
  background-position:left top; 
}
.mask{
  position:fixed;
  top: 0;
  background:rgba(0, 0, 0, 0.38);
  display:none;
  height:100%;
  width: 100%;
  z-index:10;
}
.to_blur.blur {
 -webkit-filter: blur(5px);
 -moz-filter: blur(5px);
 -o-filter: blur(5px);
 -ms-filter: blur(5px);
 filter: blur(5px);
}