function get_Material_Lists_Thm($file_name)
{
    $My_DB = new My_Database();
    $subj_ID = $My_DB->get_material_by_file_name($file_name)['result']['sub_id'];
    $Cat = $My_DB->get_material_by_file_name($file_name)['result']['category'];
    $found = "";
    if (isset($My_DB->get_material_by_subject_And_Category($subj_ID, $Cat)['result'])) {
        $Materials = $My_DB->get_material_by_subject_And_Category($subj_ID, $Cat)['result'];
        foreach ($Materials as $material) {
            $bb = '?page=tuts&file_path=' . $material['file_name'] . '&subj=' . $subj_ID;
            $found = $found . '<div class="col-sm-12 pull-left" style="border-bottom: 1px dashed #000000"><img src="images/SJS LOGO.PNG" <small><a href=' . $bb . '>' . $material['title'] . '</a></small></div>';
        }
    }
    return $found;
}