Opera Mouse Gesture help

How does this Next/Previous gesture work?

[Slade]

I'm using Opera 7.11(2887).

When I look at the recent posts page here, I can hold down the left(primary) mouse button, and click the right(alternate) mouse button to open the next sequential page in recent posts. How does it do that?

I've view source'd but there's not a <link> tag with a Next identifier. There's also nothing peculiar that I can see about the "Next" link.

So, how does this work?

Brett, did you pay Opera for that to work on your page? ;)

[BlobFisk]

Hmmm good find! I noticed that this same gesture works to go forward and back through Google results pages....

Not sure how it does this...

[BlobFisk]

OK, I can see one way of doing this, and that is using the next and previous rel links:

<link rel="previous" href="previousPage.html"/>
<link rel="next" href="nextPage.html"/>

Can't see these in Google or WebmasterWorld though...