Botão Curtir nos posts

• Descrição:

Boa noite galera,

Tou com extrema dificuldade, querendo colocar um simples botão de curtir nos posts.
Tem um tutorial aqui no forum, mas tem alguns passos que não estou conseguindo fazer.
Tut: https://ajuda.forumeiros.com/t42971-tutorial-colocando-botao-curtir-nas-mensagens

Se tiver algum tutorial mais atualizado, sei lá... Se puderem, me ajudem por favor.

Agradeço desde já

• Informações:

Código:

jQuery(document).ready(function() {
jQuery('p.author').after('<iframe src="http://www.facebook.com/plugins/like.php?href=http://www.forumimportamais.net/&amp;layout=standard&amp;show_faces=true&amp;width=450&amp;action=like&amp;colorscheme=light&amp;height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:450px; height:80px;" allowTransparency="true"></iframe> ');
});

Código:

var CopyrightNotice = 'Professional like/dislike bar for forumotion phpBB3 boards. Copyright © 2011 by Dion Designs. All Rights Reserved. Use and/or modification of this script is allowed, provided this entire copyright notice remains in the original or modified script. Distribution is not allowed without written consent from Dion Designs.';
$(function() {
    $('#main-content').prepend('<style type="text/css">ul.profile-icons li.ddvote{height:20px;line-height:20px;font-size:12px;font-weight:bold}ul.profile-icons li.ddvote a{display:inline}.postbody ul.profile-icons li.ddvote img{cursor:default;vertical-align:middle}.postbody ul.profile-icons li.ddvote a img{cursor:pointer}</style>');
    var x=$('.vote').get();
    for (i=x.length-1; i>=0; i--) {
        var plus='0';

        var vplus='<img style="position:relative;top:-3px;margin-right:3px" title="Like" src="http://i39.servimg.com/u/f39/15/88/72/83/curtir11.png" />';

        var y=$(x[i]).find('.vote-button a').get();
        for (j=0; j<y.length; j++) {
            if (y[j].innerHTML=='+') {vplus='<a href="'+y[j].href+'">'+vplus+'</a>';}
            }
        var y=$(x[i]).find('.vote-bar')[0];
        if (y) {
            var z=y.title.split(' ');
            var pct=parseInt(z[3].replace(/%/,''))/100;
            var num=parseInt(z[4].replace(/\(/,''));
            plus=String(Math.round(num*pct));
        }
        if (x[i].parentNode.parentNode.parentNode.className=='module row1') {
            $(x[i].parentNode).find('.profile-icons').prepend('<li class="ddvote"> ' + vplus + plus + ' <li>');
            $(x[i].parentNode).find('.h3').css('border','none');
        }
        else {
            $(x[i].parentNode.childNodes[0]).prepend('<li class="ddvote"> ' + vplus + plus + ' <li>');
        }
        x[i].parentNode.removeChild(x[i]);
    }
});