Link title: source versus Firebug inspection

Link title example from The Pirate Bay.

Video > Movies - TPB
http://thepiratebay.org/browse/201/

I was surprised to see that link title in the source code and title via firebug are different.

source code
title="Details for Speed Racer 2008 Cam - .avi"

Firebug, etc code
title="Details for Speed Racer 2008 Cam - .avi (/tor/4183436/Speed__Racer_2008_Cam_-_.avi)"

Adblock plus shows the same appended title as firebug - the title plus (/tor/blahblah...)

This test code...

links = document.getElementById("content").getElementsByTagName("A");
for (var i=0; i < links.length; i++) {
	links[i].title = "test";
}

... doesn't stop (/tor/blahblah...) from being appended onto the title.

title="test (/tor/4183436/Speed__Racer_2008_Cam_-_.avi)"

1
I don't understand what's going on. I'm mystified. Why are the titles different?

2
Can I stop (/tor/blahblah...) from being appended onto the title?