That was a very good article. However, I don't really use JavaScript to much because people can disable it (ex. most companies have it already disabled by a filter) so I stick with HTML.

I have a question that I hope someone can answer. Why isn't there an option for fonts in css as trasparent, as in "invisible but still clickable and of substance". I see all of these image replacement schemes, but If I could just put the image in the vincinity of a font {color: transparent;} then I could really make my page look the way I'd like it to, and the page could still be searchable and indexed and so on.

Is there any future for a transparent font in firefox

Well there are no fonts because it's trasparent. Search engines frown when they find trasparent text.