Getter / Setter style properties for javascript... sorta

jsproperties.js

(function(){
    var console = {
        log: function(message){
            $('body').append(message + "<br />");
        }
    };
    var __bind_prop = function(fn, me, name){ 
        return function(){ 
            var args = [name];
            for (var x=0;x<arguments.length;x++){
                args.push(arguments[x]);
            }
            return fn.apply(me, args);
        };
    };
    function Model(){
        for (var p in this){
            if (this.hasOwnProperty(p)){
                this['_' + p] = this[p];
                this[p] = __bind_prop(this.__property, this, p);
            }
        }
    }
    
    Model.prototype.__property = function(field, value){
        if (value !== undefined){
            this['_' + field] = value;
        }
        return this['_' + field];
    };
    
    function Something(firstName, lastName){
        this.firstName = firstName;
        this.lastName = lastName;
        Model.call(this);
    }
    
    Something.prototype = new Model();
    
    Something.prototype.fullName = function(){
        return this.firstName() + " " + this.lastName();      
    };

    var something = new Something('Matthew', 'Morrison');
    console.log("Original");
    console.log(something.fullName());
    something.firstName('Kyle');
    something.lastName("Carlton");
    console.log("Updated");
    console.log(something.fullName());
}());​

http://jsfiddle.net/c83L3/8/