Forum:Any way to make link caption invisible?

I found an interesting topic about CSS tooltip here, and installed the codes by Sovq on my wiki. It's perfectly working as I wished, but when I wrap an internal link: Forum:Support Requests Tooltip text  it displays an another tooltip(link caption) beside the CSS one. (here's a Screenshot.) So this time, I tried ajax tooltip code but it didn't even work.

For now, I'm using a simple trick to not have this doubled caption:  Forum:Support Request Tooltip text But this seems not to be the proper way to solve the problem and I wouldn't like to make templates out of this. Please point me the right way.
 * I'm not really sure about this, but to shorten the code, you could replace it with:

 [/wiki/Forum:Support_Requests Forum:Support Request] Tooltip text
 * Sam Wang (talk) 04:57, May 3, 2012 (UTC)


 * Post a link to a page of where the tooltip works as intended, please! Maybe we can take it from there... --


 * Hmm.. good question. I'm not sure you can remove the link title (that is what I understand the issue is) from internal links. You could remove the "plainlink" class though - formatting the links as external ones should remove the alt text, but since they're still links to internal content, the won't have the little arrow icon. Also, I think it was "plainlinks", not "plainlink". I'm curious if anyone can come up with a proper solution for removing the alt text though. — Sovq 07:52, May 3, 2012 (UTC)