Its Question and Four Options and check any one. **Problem** When Checked button to Next Question then previous check was unchecked.

Code as bellow:

```
    <form method="post" id="submitme">
    <table class="ques_list" border=1 style="width:100%">
    <?php 
        $result=mysql_query("SELECT * FROM questions ORDER BY RAND() LIMIT 20");
        while ($row = mysql_fetch_array($result)) { ?>
            <tr>
                <td colspan="2"><?php echo $row['ques_title']."<br />"; ?></td>
            </tr>
            <tr>
                <td><input type="radio" name="opt_value" value="1" /><?php echo $row['ques_opt_1']."<br />"; ?></td>
                <td><input type="radio" name="opt_value" value="2" /><?php echo $row['ques_opt_2']."<br />"; ?></td>
            </tr>
            <tr>
                <td><input type="radio" name="opt_value" value="3" /><?php echo $row['ques_opt_3']."<br />"; ?></td>
                <td><input type="radio" name="opt_value" value="4" /><?php echo $row['ques_opt_4']."<br />"; ?></td>
            </tr>
        <?php } ?>
        <tr><td colspan="2"><button type="submit" name="btn-submit" class="btn-submit">Submit</button></td></tr>
    </table>
</form> 

```

And How can i get his value ?
Suggest me.
Thanks.