html, body {
    _height: 100%;
    _overflow:auto;
	_padding:0;
    _margin:0;
	
}

 .mask {
  filter: 'alpha(opacity=70)';
  *filter: alpha(opacity=70);
  opacity: 0.8;
  background: #000000;
  left: 0px;
  top: 0px;
  display:none;
  }
  .loginDiv{
  filter: alpha(opacity=100);
  opacity: 1.0;
  }