code: function() {
  			var i,
  				l,
  				parents = this.getParentList(false, false);
  
  			for (i = 0, l = parents.length; i < l; i++) {
  				if (!parents[i].expanded) {
  					return false;
  				}
  			}
  			return true;
  		}
docs: Return true if all parent nodes are expanded. Note: this does not check
  whether the node is scrolled into the visible part of the screen.
  @returns {boolean}