How to delay a javascript function until after Jquery & Facebook are both loaded?

Question

Jquery provides a very convenient way to delay executing code until the DOM is fully loaded:

$(function() {
    dom_is_loaded();
});

The Facebook Javascript SDK, when loaded asynchronously, provides a similar mechanism:

window.fbAsyncInit = function() {
    fb_is_loaded();
}

What's the most elegant way to delay code from running until the DOM and Facebook's SDK have both fully initialized?

Answer 1

Is there a reason why just doing

window.fbAsyncInit = function() {
    $(function() {
        both_loaded();
    });
}

doesn't work?