#note_tree_area {
  float: right;
  margin-left: -6em;
}

#note_tree_area_holder {
  overflow: auto;
  height: expression( eval( documentElement.offsetHeight - 100 ) );
}

#center_area {
  float: right;
  max-width: 59%;
}

#this_notebook_area_title {
  margin-top: 1.5em;
}