[jQuery] Using Jquery Form and Block UI together

[wattaka]

I have this function that triggers an AJAX call to the server

$('#advert_settings_form').ajaxForm(function() {
        $.blockUI('<h1><img src="busy.gif" /> Just a moment...</h1>');
                //alert("Thank you for your comment!");
     });


Where do I put the blockUI and unblockUI functions in ajaxForm
callable?

Thanks