need help with lightbox

I am working on a lightbox and for some reason when I preview it in dreamweaver it works where the image pops up over top of the webpage but when I look at it live in firefox when I click on the image it just takes you to a page with only that image instead of making the lightbox appear over the page. The page is [url]http://www.themastersinn.com/home_test4.html[/url] and it is the three images about halfway down the page any thoughts would be great.

Also in #JavaScript _↴