While debugging jquery code on their site ( via chrome developer toolbar)
I noticed that their examples are given under Iframe :
Iframe
Here - for ex
Yes, it is possible to load an empty (with no src specified) and later apply content to it using script.
src
See: http://api.jquery.com/jquery-wp-content/themes/jquery/js/main.js (line 54 and below).
Or simply try: