OPI: <center><font size=4><b>trang phan hoi</b></font> 
<br><br><font size=3>chao ban!<br> Hoan nghênh b?n liên h? v?i chúng tôi.<br>cam on</font> 
<form method="post" action="phanhoi.php"> 
<p><strong>ten ban:</strong><br> 
<input type="text" name="sender_name" value="" size=30></p> 
<p><strong>email:</strong><br> 
<input type="text" name="sender_email" value="" size=30></p> 
<p><strong>loi gop y:</strong><br> 
<textarea name="message" cols=50 rows=12 wrap=virtual></textarea></p> 
<input type="hidden" name="opi" value="ds"> 
<p><input type="submit" name="submit" value="gui"></p> 
</form></center>