I saw this [Javascript feature tour file][1] today, and was curious how I would go about implementing it on the homepage of a WordPress site. 

Ideally, I'd like to add it so it only shows up if and only if a user is on the homepage and have never been there before. I'm new to this though, and I'm not sure how to implement it. I found [this previous question][2] but I'm not sure how I would use it in this context. How would I use it on the homepage, and what files would I have to edit?

Thank you!


  [1]: http://usablica.github.com/intro.js/
  [2]: http://wordpress.stackexchange.com/questions/39774/how-to-load-a-css-file-in-one-page-only