super call within Backbone.js - adding multiple levels of inheritance.

backbone.$super.js

    var $super = function(funcName){
        funcName = funcName || 'initialize';
        // _.bindAll messes upp constructor
        // TODO: Add more tests with multiple inheritance
        var _super = this.constructor.__super__ || this.__proto__.constructor.__super__;
        return _super[funcName].apply(this, _.rest(arguments));
    },

    _$super = function(funcName){
        funcName = funcName || 'initialize';
        // _.bindAll messes upp constructor
        // TODO: Add more tests with multiple inheritance
        var _super = this.constructor.__super__ || this.__proto__.constructor.__super__;
        return _super[funcName];
    };


    // Create a superclass method
    Backbone.Model.prototype.$super =
        Backbone.Collection.prototype.$super =
        Backbone.NestedModel.prototype.$super =
        Backbone.View.prototype.$super = $super;


    Backbone.Model.prototype._$super =
        Backbone.Collection.prototype._$super =
        Backbone.NestedModel.prototype._$super =
        Backbone.View.prototype._$super = _$super;

backbone.super.js

    var $super = function($that, funcName){
        funcName = funcName || 'initialize';

        // _.bindAll messes upp constructor
        // Will now handle multiple inheritance, and extend the events and defaults.

        _.extend({}, $that.attributes, this.constructor.__super__.defaults);
	_.extend({}, $that.events, this.constructor.__super__.events)

        var _super = this.constructor.__super__ || this.__proto__.constructor.__super__;
        return _super[funcName].apply($that, _.rest(arguments));
    },

    _$super = function($that, funcName){
        funcName = funcName || 'initialize';
        // _.bindAll messes upp constructor
        // TODO: Add more tests with multiple inheritance
        var _super = this.constructor.__super__ || this.__proto__.constructor.__super__;
        return _super[funcName];
    };


    // Create a superclass method
    Backbone.Model.prototype.$super =
        Backbone.Collection.prototype.$super =
        Backbone.NestedModel.prototype.$super =
        Backbone.View.prototype.$super = $super;


    Backbone.Model.prototype._$super =
        Backbone.Collection.prototype._$super =
        Backbone.NestedModel.prototype._$super =
        Backbone.View.prototype._$super = _$super;


usage: 

var Parent = Backbone.model.extend({
     
})

var Child = Parent.extend({
     initialize:function(attributes) {
           Child.prototype.$super(this);
     }
})

var SubChild = Child.extend({
     initialize:function(attributes) {
           SubChild.prototype.$super(this);
     }    
})