<script type="text/javascript">
$(function(){
    $("#btnComentar").live('click',function(){
        var nome = $("#namecom").val();
        var email = $("emailcom").val();
        var site = $("#sitecom").val();
        var comentario = $("#comentcom").val();

        if(nome == "" || email == "" || site == "" || comentario == ""){
            $("#erros").html('<div class="erro">Erro: Preencha todos os campos!</div>');
        }else{
            $("#form").fadeOut();
            $("#comentar").html('<div class="load"><img src="<?php echo $base;?>/images/carregando.gif" id="load" alt="carregando"/></div>');
            $.post("<?php echo $base;?>/includes/comentar.php",{
                <?php
                    if(isset($_GET['replyto'])){
                ?>
                replyto: <?php echo (int)$_GET['replyto'];?>
                <?php }?>
                acao: 'comentar',
                nome: nome,
                email: email,
                site: site,
                comentario: comentario

            },function(valor){
                $("#comentar").html(valor);
            });
        }
    });
});
</script>