Php Guestbook simple error( i think)

My mission is to create a database-less guestbook

I have an infernal error loop could someone help me spot the blunder

the html runs but when you submit.. it goes crazy 

<TABLE cellSpacing=3 cellPadding=2 width="65%" border=9 align=center>
	<tr>
		<td><center><u>Guestbook</u></center></td>
	</tr>
	<tr>
		<td>
			<TABLE cellSpacing=1 cellPadding=0  border=0 align=center style="WIDTH: 95%; HEIGHT: 54px">
				<tr>
					<td><form action="guestbook.php" method=post>Name: <input type=text width="90%" name="name"><br><textarea cols=60 rows=10 name="message"></textarea><br><Br><input type=submit value="Post"></form></td>
				</tr>
			</table>
			<TABLE cellSpacing=3 cellPadding=2 width="65%" border=9 align=center> <?php include("guestbook.html");?>
			</TABLE>
		</td>
	</tr>
</TABLE>
</html>

<?php
if(isset($_POST['name']) && isset($_POST['message'])) 
{ 
	if($_POST['name'] != "" && $_POST['message'] != "")
	{
		$F_D = getdate();
		$FT = $F_D['mon']."/".$F_D['mday']."/".$F_D['year'];

		$FP = Fopen('guestbook.html',"a");
		fwrite($FP,"<tr><td>Date: ");
		fwrite($FP, $FT);
		fwrite($FP, "</tD></tr><tr><td>Name: ");
		fwrite($FP, $_POST['name']);
		fwrite($FP, "</td></tr><tr><td>");
		fwrite($FP, strip_tags($_POST['message']));
		fwrite($FP,"</td></tr><tr><td></td></tr>");
		fclose($FP);
		
	}
}
?> 
<TABLE cellSpacing=3 cellPadding=2 width="65%" border=9 align=center>
	<tr>
		<td><center><u>Guestbook</u></center></td>
	</tr>
	<tr>
		<td>
			<TABLE cellSpacing=1 cellPadding=0  border=0 align=center style="WIDTH: 95%; HEIGHT: 54px">
				<tr>
					<td><form action="guestbook.php" method=post>Name: <input type=text width="90%" name="name"><br><textarea cols=60 rows=10 name="message"></textarea><br><Br><input type=submit value="Post"></form></td>
				</tr>
			</table>
			<TABLE cellSpacing=3 cellPadding=2 width="65%" border=9 align=center> 
				<?php include("guestbook.html"); ?>
			</TABLE>
		</td>
	</tr>
</TABLE>