gistfile1.txt

<script src="LAB.js"></script>
<script>

// put whatever here, for your page's other scripts that you load with <script> tags.
$LAB.script("my_script1.js").script("my_script2.js").wait().script("my_script3.js");

window.fbAsyncInit = function() {
    FB.init({appId: 'your app id', status: true, cookie: true,
             xfbml: true});
  };

// NOTE: separate chain, doesn't wait on the above
$LAB.script("//connect.facebook.net/en_US/all.js");
</script>