Navigation to cover and titlepage in epub

I'm creating an 
epub with v 1.76 of the stylesheets and have included a cover image and 
titlepage. Both the cover image and all titlepage elements are specified 
within d:book/info. What I want in an epub is for the side navigation panel 
(toc.ncx) and the bottom nav buttons to navigate from cover image > 
titlepage > preface; so I need a toc link that says "cover" which will 
link to the cover image.

 

What I get instead in 
the toc is the title of the book as the first link, then preface below that. 
When I view the epub in Firefox, it opens at the cover image; then when I 
use the nav button at the bottom it goes straight to preface. Oddly, when I 
then click the back button from preface it goes to the cover image; it is 
not navigating to the titlepage. 

 

So, using the 
side toc, the navigation links go from titlepage > preface (with no link 
to the cover image). Using the nav buttons, the nav goes from cover image 
> preface (with no link to the titlepage).

How 
can I:

1. include the cover image (which is cover.html) at the 
start of the toc

2. make the nav buttons work: cover > title 
page > preface (and back again in that order)

 

I note that the titlepage is given the filename index.html - is this what's 
causing problems with nav? (ie is there confusion between "index.html" and a 
back-of-book index?

Thanks,
 

Dave Gardiner