.slidein_content {
  display: block;
  overflow:hidden;
  height: 0px;
  text-align: left;
}
#mask {
  left: 0;
  top: 0;
  position: absolute;
  opacity: 0;
  filter: alpha(opacity=0);
  margin: 0;
}
body {
  position: relative;
  overflow: visible;
  margin: 0;
  padding: 0;
}
html {
  overflow: auto;
  padding: 0;
}