Code

$(document).ready(function() {
            var count = 0;


            $("#add_btn").click(function(){
                    count += 1;
                    $().attr('class','inputtext');
                $('#container').append(
                         '<tr class="records">'
                         + '<td ><div class="uiBoxLightblue" id="'+count+'">' + count + '</div></td>'
                         + '<td><input class="inputtext" id="nim_' + count + '" name="nim_' + count + '" type="text"><br/></td>'
                         + '<td><input class="inputtext id="nama_depan_' + count + '" name="nama_depan_' + count + '" type="text"></td>'
                         + '<td><input class="inputtext id="nama_belakang_' + count + '" name="nama_belakang_' + count + '" type="text"></td>'
                         + '<td><a class="remove_item" href="#" >Delete</a>'
                         + '<input id="rows_' + count + '" name="rows[]" value="'+ count +'" type="hidden"></td></tr>'
                    );
                });
                $(".remove_item").live('click', function (ev) {
                if (ev.type == 'click') {
                $(this).parents(".records").fadeOut();
                        $(this).parents(".records").remove();
            }
            });
        });