Extending existing singleton
<p>I like the idea of using Singleton mentioned here <a href="http://www.adobe.com/devnet/html5/articles/javascript-design-patterns-pt1-singleton-composite-facade.html" rel="nofollow">http://www.adobe.com/devnet/html5/articles/javascript-design-patterns-pt1-singleton-composite-facade.html</a>:</p>

<pre><code>    var Namespace = {
    Util: {
        util_method1: function() {…},
        util_method2: function() {…}
    },
    Ajax: {
        ajax_method: function() {…}
    },
    some_method: function() {…}
};
</code></pre>

<p>Let's say I have to add some methods and new namespace too (Namespace.Util2) later, how can I add methods without modifying the above code</p>
