code: function(id, opt) {
      var pos = this.graph.getNode(id).pos.getc(true);
      this.move(pos, opt);
    }
docs: /*
  Method: onClick
  
  Animates the <Hypertree> to center the node specified by *id*.
  
  Parameters:
  
  id - A <Graph.Node> id.
  opt - (optional|object) An object containing some extra properties described below
  hideLabels - (boolean) Default's *true*. Hide labels when performing the animation.
  
  Example:
  
  (start code js)
  ht.onClick('someid');
  or also...
  ht.onClick('someid', {
  hideLabels: false
  });
  (end code)