multi dimensional object
<p>how can you make a multi dimensional object??</p>

<pre><code>function tst(){
    this.a = function(){
        alert(this.b.abc.c());
    };

    this.b = function(){

    };
}
var obj = new tst();
obj.b.abc = function(){
    this.c = function(){
        return 'hello world';
    };
};

obj.a();
</code></pre>
