Ajax layer script

I have one html page that is meant to be implemented on restaurant sites. In some cases it is not possible for them to integrate it in their existing site. I need a script so that they instead can place a link "Book". And when they click on that a layer appears with my html file. It shall look like it does when I click on any image on this page: <[login to view URL]> There shall be a small "x" in top right corner so that I can close the layer. I have attached my code so taht you can make it with the real content. ## Deliverables I want one file with the code and a link "book" which I can place on any site that will bring up the layer with my current file.