Function get_viewport_height

doc/static/sidebar.js:48–53

()

  var light_color = '#CCCCCC';

  function get_viewport_height() {
    if (window.innerHeight)
      return window.innerHeight;
    else
      return jwindow.height();
  }

  function sidebar_is_collapsed() {
    return sidebarwrapper.is(':not(:visible)');