Here is what I am trying to accomplish:

I have a gallery of thumbnails; each thumbnail links to a single post.

When a user clicks on a thumbnail, the permalink'd post opens in a Fancy Box iframe.

The content for that iframe is whatever the single post template contains because it is only using the simple, WP-generated permalink. So, at the moment the template contains no header, sidebar, footer - it just contains enough markup that it could be styled nicely in the Fancy Box iframe.

This was a nice solution until trying to implement the Add-to-Any widget. When this button is clicked from within the iframe, it takes the single post's URL.

This is a problem because if the user goes directly to the template as linked from Add-to-Any, they are taken to a page without the header, footer, and sidebar - which if you are visiting a post directly, you would want to have!

My solution, I think, is one of the following:

1) Somehow modify the Add-to-Any URL so that the user is redirected to the gallery page but in a way that force-opens the iframe on load (with a 'faked' click event using jQuery?) - essentially, then the person who received the link will see exactly what the user linking them saw,

or

2) Somehow modify the Add-to-Any URL or permalink to a slightly different file path, so that I can use template hints and have a special template for when the post is accessed directly.

Which of these sounds like the most painless option? Right now I'm a little unsure as to how to go about implementing either of them. I think that option #1 is ideal, but I'm not sure - and that's why I'm here, I need some feedback to make sure I'm going about this in a relatively sane way. How would I go about #1 at all?

I'm sorry, but for this one I am unable to provide a working demo and so I hope that this description is adequate. Please, ask questions if I am unclear. I will see about giving an example if I can; mostly I just need to confirm with who the demo is hosted with.