Overlay not displaying linked page

Overlay not displaying linked page

I am trying to get an overlay working on my site, currently just running locally. I've copied the source and style sheets from,

http://www.jquerytools.org/demos/overlay/external.htm

and changed the links in all three files (as far as i can see) so they all find the appropriate files.

Everything seems to be working except that the pop-up window is empty, no content is displayed. if i remove rel="#overlay" from the href tag the link works as normal...

any ideas?

thanks :)