if ($_GET['aksi'] == "") {
        $hasil = $koneksi_db->sql_query("SELECT * FROM kursus_setting  order by guru asc");
        $admin .= '<div class="panel-heading"><b>Daftar Kursus</b></div>';
        $admin .= '<table id="example" class="table table-striped table-hover">
<thead><tr>
<th>No</th>
<th>Guru</th>
<th>Mata Pelajaran</th>
<th>Tahun Ajaran</th>
<th>Nama Kursus</th>
<th>Aksi</th>
</tr></thead><tbody>';
        $no = 1;
        while ($data = $koneksi_db->sql_fetchrow($hasil)) {
            $idkursus = $data['id'];
            $cekjmlmateri = cekjmlmateri2($idkursus);
            $getkelasid_ks = getkelasid_ks($data['id']);
            if ($getkelasid_ks != '') {
                $tambah = '<a href="?pilih=materi&amp;mod=yes&amp;aksi=upload&amp;id=' . $data['id'] . '"><span class="btn btn-warning">Tambah Materi (' . $cekjmlmateri . ')</span></a>&nbsp;';
            } else {
                $tambah = '';
            }
            $admin .= '<tr>
<td><b>' . $no . '</b></td>
<td>' . getnamaguru($data['guru']) . '</td>
<td>' . getmapel($data['mapel']) . '</td>
<td>' . $data['tahun'] . '</td>
<td>' . $data['judul'] . '</td>
<td>' . $tambah . '</td>
</tr>';
            $no++;
<thead><tr>
<th>No</th>
<th>Guru</th>
<th>Mata Pelajaran</th>
<th>Tahun Ajaran</th>
<th>Aksi</th>
</tr></thead><tbody>';
            $no = 1;
            while ($data = $koneksi_db->sql_fetchrow($hasil)) {
                $admin .= '<tr>
<td><b>' . $no . '</b></td>
<td>' . getnamaguru($data['guru']) . '</td>
<td>' . getmapel($data['mapel']) . '</td>
<td>' . $data['tahun'] . '</td>
<td>&nbsp;';
                $cekjmlmateri = cekjmlmateri2($data['guru']);
                if ($cekjmlmateri > 0) {
                    $admin .= '<a href="?pilih=materi&amp;mod=yes&amp;aksi=lihat&amp;id=' . $data['id'] . '"><span class="btn btn-primary">Daftar Materi (' . $cekjmlmateri . ')</span></a>';
                } else {
                    $admin .= '<a href="#"><span class="btn btn-danger">No Lessons</span></a>';
                }
                $admin .= '</td>
</tr>';
                $no++;
            }
            $admin .= '</tbody></table>';
        }
    }
    /**************************************************************/
    if ($_GET['aksi'] == "lihat") {
        $id = int_filter($_GET['id']);