var treeConfig =
   {
      homeIcon        : './pix/home.png',
      homeLocation    : './intro.html',
      homeIconVisible : true,
      animateTwisty   : false,      // this causes untold havoc wrt spacing in most browsers on all 3 platforms; use at your own peril
      easedToggle     : true,
//    easedToggle     : false,
      toggleSpeed     : 500
   };