adding namespaces to the prototype chain in js.

ClassHelpers.js

var Class = {};
Class.namespace = function(ns,value)
{
    var nsArr = ns.split(".");
    var obj = window;
    var prop;
    for(var n=0; n < nsArr.length-1; n++)
    {
        prop = nsArr[n];
        if(!obj[prop])
        {
            obj[prop] = {};
        }
        obj = obj[prop];
    }
    obj[nsArr[nsArr.length-1]] = value; 
    return obj;
}                   

Class.extend = function(_super, proto) 
{
     this.prototype = new _super();
     if (proto) 
     {
        Class.mixin(this.prototype,proto);
     }
     return this.prototype;
};

Class.mixin = function(obj,proto)
{
    for (var i in proto)
    {
        obj[i] = proto[i];
    }
};

// Sample Use

var DuckObj = function(){};
DuckObj.prototype.quack = function()
{
    console.log("I am a duck!");
}

Class.namespace("some.sort.of.hybrid",
                Class.extend( DuckObj,
{ 
    bark:function()
    {
        console.log("I am a dog");
    } 
}));
                                
some.sort.of.hybrid.bark();
some.sort.of.hybrid.quack();