When I arrow over your links, I don't see the url that I will be directed to. I do not go to sites when I can't see the url that I will be directed to. Maybe it's just me, but I would allow people to see the url that is being linked.
When I right clicked and looked at the script, I see that all the links are pages on your site, so you really don't have any reason to hide the links. I mean, it would be different if you were directing them to
http://www.onehundredpopups.com (made up that link - I suppose it's not real).