Loading Javascript Dynamically and how to check if the script exists
<p>I am using the following technique to load up Javascript dynamically:</p>

<pre><code>var script = document.createElement("script");
script.type = "text/javascript";
script.src = "file.js";
document.body.appendChild(script);
</code></pre>

<p>It's quite a common approach. 
It's also discussed here: <a href="http://www.nczonline.net/blog/2009/06/23/loading-javascript-without-blocking/" rel="nofollow">http://www.nczonline.net/blog/2009/06/23/loading-javascript-without-blocking/</a></p>

<p>I know how to get notified once the file has been loaded and executed</p>

<p>What I don't know is that if the link to the Javascript source file is broken how can I be notified. </p>

<p>Thanks</p>
