Why this event is not fired on fiddle?
<p><a href="http://jsfiddle.net/Yhj2m/1/" rel="nofollow">This</a> is the code! I really don't know why <code>addTrack</code> is not recognized :</p>

<pre><code>&lt;input type="submit" onclick="addTrack(this);return false" value=" Add "&gt;

function addTrack(param) {
    alert("ciao");
}
</code></pre>

<p>Error : Uncaught ReferenceError: addTrack is not defined</p>
