Displaying smaller tables

[sparklingsky]

I was wondering how people put ad buttons in smaller tables. I looked it up on a person's page source and I sort of understand how they did it. I kind of wanted to do something like this, it's hard to explain: http://i42.tinypic.com/2aj0qi1.png.

I just want to put ad buttons inside the smaller tables. This is probably much more simple than I'm making it out to be. Help? And to clarify a bit further the person's page source that I was looking at is: http://simplyunique.info/pages/site/.../advertise.php. Thanks so much if you can help!