transpose number to USD
<p>I have</p>

<pre><code>onclick="document.getElementById('field1').value = 
(Math.round((parseFloat(document.getElementById('field2').value,2)*100))/100 + 
Math.round((parseFloat(document.getElementById('field3').value,2)*100))/100).toFixed(2);" 
</code></pre>

<p>Field 2 and 3 are text input (numeric values). How can I transpose the value of field 1 to a currency value.  Example</p>

<pre><code>onclick="document.getElementById('field1').value = parseInt(document.getElementById('200.75').value) * parseInt(document.getElementById('11').value);"
</code></pre>

<p>and have field1 return $2,208.25 </p>
