codeigniter，如何显示悬停文本的详细信息

i need to fetch and display data using a table (shown on view below) from database when mouse-over and disappear when mouse is off.

here is the model

public function teacher_with_subject(){
    $this->db->select('*')
    ->from('teacher AS t')
    ->join('teacher_subject ts','t.computer_number=ts.computer_number', 'left')
    ->where('t.date_of_termination','0000-00-00')
    ->where('ts.date_of_end','0000-00-00');
    $query = $this->db->get();  return $query->result_array();
}

controller

$located=$this->select_model->teacher_with_subject();

view:-

if (count($located) > 0) {
    echo '<table>';

    foreach($located as $locate){
        echo "<tr><td>".$locate['computer_number']."</td><td>".$locate['name']."</td><"</td><td><img src=". base_url()."inc/images/confirm.png width='45' height='30' border='0' class='computer_number' data-id='".$locate['computer_number']."'/></td></tr>";
    }
    echo '</table>';
}

i want to display postal address and email address when mouse is over name