ขอความช่วยเหลือหน่อยครับ ผม เรื่อง JQery pop up แสดงข้อมูลแต่ละแถว

 <table  class="table table-bordered" style="font-size: small;text-align: center">
                <tr class="info">
                    <td>ที่</td><td>รายชื่อนักศึกษา</td><td>หัวข้อ</td><td>ประเภทการสอบ</td><td>ในฐานะ</td><td>วันที่สอบ</td><td>ห้อง</td><td>คะแนน</td><td>สถานะ</td><td></td>
                </tr>
                <tr >
                    <?php
                    $i = 1;
                    if (!empty($list_add_point)) {


                        foreach ($list_add_point as $list_add_point) {

                            if ($list_add_point['teacher_id'] == $user_id) {//ฐานะอาจารย์
                                $teacher = "teacher_id_point";
                                $teacher_id = "teacher_id";
                                $teacher_status = "อาจารย์ที่ปรึกษา";
                                $point = $list_add_point['teacher_id_point'];
                            }
                            if ($list_add_point['teacher_id_2'] == $user_id) {
                                $teacher = "teacher_id_2_point";
                                $teacher_id = "teacher_id_2";
                                $teacher_status = "ผู้คุมสอบ";
                                $point = $list_add_point['teacher_id_2_point'];
                            }
                            if ($list_add_point['teacher_id_3'] == $user_id) {
                                $teacher = "teacher_id_3_point";
                                $teacher_id = "teacher_id_3";
                                $teacher_status = "ผู้คุมสอบ";
                                $point = $list_add_point['teacher_id_3_point'];
                            }
                            //
                            if ($list_add_point['teacher_id'] == $user_id and $list_add_point['teacher_id_point'] == NULL) {//สถานะให้คะแนน
                                $point_status = "ยังไม่ได้ให้คะแนน";
                            } else if ($list_add_point['teacher_id_point'] == $user_id and $list_add_point['teacher_id_point'] !== NULL) {
                                $point_status = "ให้คะแนนแล้ว";
                            }
                            if ($list_add_point['teacher_id_2'] == $user_id and $list_add_point['teacher_id_2_point'] == NULL) {
                                $point_status = "ยังไม่ได้ให้คะแนน";
                            } else if ($list_add_point['teacher_id_2_point'] == $user_id and $list_add_point['teacher_id_2_point'] !== NULL) {
                                $point_status = "ให้คะแนนแล้ว";
                            }
                            if ($list_add_point['teacher_id_3'] == $user_id and $list_add_point['teacher_id_3_point'] == NULL) {
                                $point_status = "ยังไม่ได้ให้คะแนน";
                            } else if ($list_add_point['teacher_id_3_point'] == $user_id and $list_add_point['teacher_id_3_point'] !== NULL) {
                                $point_status = "ให้คะแนนแล้ว";
                            }
                            ?>

                            <td style="vertical-align:middle;"><?php echo $i; ?>
                                <input type="hidden" name="point_id[]" value="<?php echo $list_add_point['point_id']; ?>"/>
                            </td>

                            <td style="vertical-align:middle;" id="student_name_<?php echo $list_add_point['point_id']; ?>" data-id="<?php echo $list_add_point['point_id']; ?>">
                                <?php echo $list_add_point['student_prefix'] . $list_add_point['student_name'] . ' ' . $list_add_point['student_surname']; ?>
                               
                            </td>
                            <td style="vertical-align:middle;" id="thesis_name" data-id="<?php echo $list_add_point['point_id']; ?>" >
                                 <?php echo $list_add_point['thesis_name'] ?>
                            </td> 
                            <td style="vertical-align:middle;" id="point_name" data-id="<?php echo $list_add_point['point_id']; ?>" >
                                <?php echo $list_add_point['point_name'] ?></td>
                            <td><?php echo $teacher_status; ?>
                                <input type="hidden" name="teacher[]" value="<?php echo $teacher; ?>"/>
                            </td>
                            <td style="vertical-align:middle;"><?php echo $this->set_thai_date->set_date($list_add_point['schedule_test_date']); ?></td>
                            <td style="vertical-align:middle;"><?php echo $list_add_point['schedule_test_room'] ?></td>
                            <td> <?php echo $list_add_point[$teacher]; ?>
                                <input type="hidden" name="point[]" value="<?php echo $list_add_point[$teacher]; ?>"/>

                            </td>
                            <td style="vertical-align:middle;"><?php echo $point_status ?></td>
                            <td>
                                <a class="show_box btn btn-success" href="javascript:void(0);" id="update_point" data-id="<?php echo $list_add_point['point_id']; ?>" >กรอกคะแนน</a> 
                            </td>

                        </tr>
                        
                        <!-- กล่องกรอกคะแนนสอบ-->
                        <div class="msg_show">  
                            <a class="show_box" href="javascript:void(0);">Close</a>  
                            <div class="msg_data">  
                                กรอกคะแนนสอบ <?php echo $list_add_point['point_name'] ?>
                                
                            <?php echo $list_add_point['student_id'] ?>

                            </div>  
                        </div>  
                        <div id="overlay"></div>   
                        <?php
                        $i++;
                    }
                } else {
                    ?>button
                    <tr><td colspan="8">ไม่มีนักศึกษา ให้กรอกคะแนน</td></tr>
                    <?php
                }
                ?>
            </table>

//ให้คะแนนสอบ
$(function() {
   // var point_id = $(this).attr("data-id");
   // var student_name = $('#student_name_' + group_id + '[data-id=' + point_id + ']').text();
    //alert(student_name);
    $(".show_box").click(function() {
        $("#overlay").fadeToggle("", function() { // แสดงส่วนของ overlay  
            $(".msg_show").slideToggle("", function() { // แสดงส่วนของ เนื้อหา popup  
                if ($(this).css("display") == "block") {        // ถ้าเป็นกรณีแสดงข้อมูล   





                }
            });
        });
    });
});