title: javascript creating multi-dimensional array syntax
body: <p>Today I've heard that it's possible to create a multi - dimensional array in js using this syntax:</p>
  
  <pre><code>var a = new Array(3,3);
  a[2][2] = 2;
  alert(a[2][2])
  </code></pre>
  
  <p>However this doesn't work in opera. Am I wrong somewhere?</p>