The updated script (v1.2) distinguishes between links that open in the same window vs the ones that open a new/different window.

Also, due to a lot of requests from the users and friends, finally I added support for sub-domains too :)

Thanks everyone for all your feedback!
Special thanks to you Kevin :)

Thanks a lot, Kevin.

Yes, unfortunately for the first version I missed couple of the things.

1. Handle only HTTP links
2. Do not mark image links with the indicator

The above two things have been added now.

Regarding the sub-domain links, I thought about it, but not sure if I should leave it or mark it as off-site. I deliberately didn't handle that case this time.