Update the Symfony2 Web Debug Toolbar at the bottom of the page (if in debug mode). Updated from another gist which appended the contents of the wdt page. This one only updates the toolbar for the request.

Symfony Toolbar Ajax Update

    $(document).ajaxComplete(function (event, xhr, ajaxOption) {
        if (xhr.getResponseHeader('x-debug-token')) {
            $.get(window.location.protocol + '//' + window.location.hostname + '/app_dev.php/_profiler/' + xhr.getResponseHeader('x-debug-token'), function (data, status, innerXhr) {
                var toolbar = $(data).filter('.sf-toolbarreset');

                $('.sf-toolbarreset').remove();
                $('.sf-toolbar').append(toolbar);
            });
        }
    });

I've updated this gist at https://gist.github.com/akcoder/6454966. My change updates the toolbar at the bottom of the page on each AJAX request instead of appending the contents to the page.