How to determine the functionality of this javascript
<p>I'm investigating a potentially large incident of advertising fraud and in following the bread crumbs have come across a page that calls a javascript aptly named "Google_Analytics.js", which it clearly is not.</p>

<p>I've put the raw code to the file here: <a href="http://pastebin.com/5YqzCVbB" rel="nofollow">http://pastebin.com/5YqzCVbB</a></p>

<p>I am not skilled enough with javascript to have seen something like this before or to know what it is designed to do.</p>

<p>Is there anyone here who can help?</p>

<p>Thanks in advance for any assistance!</p>

<p>D</p>
