<td><select name="regno" id="select" class="style3">
  	<option>SELECT</option>
<?php 
    //get lecturer id's in the database
    $get_lectId = "SELECT id FROM user WHERE type = 'lect'";
    $get_lectId_res = mysql_query($get_lectId);
    while ($row = mysql_fetch_array($get_lectId_res)) {
        echo "<option>{$row['id']}</option>";
    }
    echo "</select>";
    if (isset($_POST['btnadd']) && $_POST['dept'] != "SELECT DEPARTMENT") {
        $add = new Lecturer();
        $add->addDetails();
    } elseif (isset($_POST['btnupdate'])) {
        $update = new Lecturer();
        $update->updateDetails();
    } elseif (isset($_POST['btnupdatepass'])) {
        $update = new Lecturer();
        $update->updatePass();
    } elseif (isset($_POST['btnget']) && $_POST['regno'] != "SELECT") {
        //get lecturer details in database
        $getid = $_POST['regno'];
        $get_details = "SELECT name,pass,lectEmail,department FROM lecturer,user \n\t\t\t\t\t\tWHERE lectId='{$getid}' AND id='{$getid}'";
        $get_details_res = mysql_query($get_details);
        $getname = mysql_result($get_details_res, 0, 'name');
        $getpass = mysql_result($get_details_res, 0, 'pass');
        $getemail = mysql_result($get_details_res, 0, 'lectEmail');
        $getdept = mysql_result($get_details_res, 0, 'department');
    } elseif (isset($_POST['btndeldata']) && $_POST['regno'] != "SELECT") {
        $delete = new Lecturer();
        $delete->deleteDetails();