.fade {
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";

  /* IE 5-7 */
  filter: alpha(opacity=0);

  /* Netscape */
  -moz-opacity: 0;

  /* Safari 1.x */
  -khtml-opacity: 0;
}
.fade.in {
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";

  /* IE 5-7 */
  filter: alpha(opacity=100);

  /* Netscape */
  -moz-opacity: 1;

  /* Safari 1.x */
  -khtml-opacity: 1;
  display: block;
}