Change the format of a number to readable in currency format?
<p>In my application, i want to be able to:</p>

<p>make this number <strong>300000</strong> appear like this <strong>300,000 USD</strong> ?
I don't want it to be necessarily "<strong>USD</strong>" , </p>

<p>I want to be able to choose my <strong>own</strong> currency too.</p>
