[jQuery] click a button returned by ajax

[Carlos Santos]

I have a button that do appear on my page through a post with jquery:

$.post(
                'more_item.php',{
                                        NumItem: NumeroItem,
                                        Str : $("#form-itens").serialize()
                                        },
                function(data){
                        NumeroItem = new Number(NumeroItem + 1);
                        $('#NumItem').val(NumeroItem);
                        var htmlStr = $('#resut_itens').html();
                        $('#resut_itens').html(data);
                }
);

it returns me a clickable link:

        <a href="javascript:void(0);" id="BtMoreDefeito"> Default </ a>

I want to create a JQUERY that clicking this BtMoreDefeito execute a
POST:

$('#BtMoreDefeito').click(function(){
                $.post(
                        'more_defeito.php',{
                                                NumDef: NumDef,
                                                Str : 
$("#form-defeitos").serialize()
                                                },
                        function(data){
                                NumDef = new Number(NumDef + 1);
                                $('#NumItem').val(NumDef);
                                var htmlStr = $('#result_defeitos').html();
                                $('#result_defeitos').html(data);
                        }
                );
});

but this has not worked. the latter showed that jquery is inserted in
the index.
the main page that calls the button.
jquery in a home can act on an ID loaded from another file with ajax?