Nested arrays - how to add a row of elements to nested JavaScript array : <p>I want to add the row</p>

<pre><code>    ['2008',777,333]
</code></pre>

<p>to var fun and maintain the structure:</p>

<pre><code>var fun = [
    ['Year', 'Sales', 'Expenses'],
    ['2004',  1000,      400],
    ['2005',  1170,      460],
    ['2006',  660,       1120],
    ['2007',  1030,      540]
         ];
</code></pre>

<p>Using push or concat seems to destroy the structure.  Can this be done?</p>
