var facebook_load = '';
    $(document).ready(function() {
        facebook_load = setInterval('checkIframeFacebookLoad()',100);
    });

    function checkIframeFacebookLoad() {
        if($('iframe.fb_ltr').length) {
            var parent = $('iframe.fb_ltr').parent();
            var hide_counter = $('').attr('id', 'hide_count');
            parent.append(hide_counter);
            clearInterval(facebook_load);
        }
    }