code: function(ctx){
  		var tree = ctx.tree;
  
  		// Bind init-handler to apply cookie state
  		tree.$div.bind("fancytreeinit", function(event){
  			tree.debug("COOKIE " + document.cookie);
  		});
  		// Init the tree
  		this._super(ctx);
  	}
docs: Overide virtual methods for this extension. `this`       : is this Fancytree object `this._super`: the virtual function that was overridden (member of prev. extension or Fancytree)