Calling iFrame Broken

[dovahkiin]

Hi,

I've spent a few hours trying but can't seem to call an iFrame Fancybox mid-script in 2.0.

The following call works perfectly with 1.3.4 but breaks in 2.0:
$.fancybox( {href : 'blah.php', type : 'iframe'} );

I've tried rejigging the syntax based on the new documentation but nothing seems to work for me.
It works fine when I trigger a fancybox from a link, but I need to call one in a script.

Any ideas?

Thanks.