Thanks to this answer, I have a way of launching a fancybox iframe on page-load: http://www.casedasole.it/fancybox/A.html
This answer shows how to open a fancybox iframe whose content is encoded in javascript in the page that launches the iframe: http://www.casedasole.it/fancybox/B.html
Is there some way of having B do what A does - i.e. launch itself on page-load?
NB: The hidden div approach (see here) won't work because I need to be able to navigate within the iframe once opened.