Asynchronous code enhancement for Outbound Link Tracking Google Analytics

You all are aware of “Update to Brian Clifton’s Outbound Link Tracking Code” post

I would like to update that script for Asynchronous Google Analytics Implementation, which is available here

It will serve four purposes:

1. External Link Tracking: To track all links on your webpage which are external links i.e. sub-domain or 3rd party domain links.
2. Email Link Tracking: To track all links which are “mailto” links.
3. Document Download Tracking: Track all documents which ending with .jpg, .doc, .docx, .xls, .zip, .pdf etc. (you can change according to your need in the code).
4. Time Tracking: It will also track how much time later user clicked on the link.

All you have to include the code just before the </head> tag in your website.

<script language="javascript" type="text/javascript" src="/external_link_tracking.js" ></script>

Note: This script requires JQuery library to work. Please comment if you need such library for any other JavaScript framework like Mootools or Prototype.