wat gaat er fout $end

 
<?

 $data1 = mysql_query("SELECT * FROM product_detail where parent_id = ".$_GET['id']." ORDER BY plaats") or die (mysql_error());
		while ($obj1 = mysql_fetch_object($data1)) 
		{
				
				list($y, $m, $d) = explode('-', $obj1->datum);
                $datum_db = $d.'/'.$m.'/'.$y;
				
				$kinder = str_replace(".", ",", $obj1->kinder);
				$reskost = str_replace(".", ",", $obj1->reskost);
				$prijs = str_replace(".", ",", $obj1->prijs);
				
				if(isset($_GET['editid']) && ($obj1->id == $_GET['editid']))
				{
				
				?>
				<form name="form2" action="" method="post">
				
			
				<tr>
						<td><input type="text" name="datum" value="<?= $datum_db;?>"></td>
						<td><input type="text" name="tijd" value="<?= $obj1->tijd;?>"></td>
						<td><input type="text" name="plaats" value="<?= $obj1->plaats;?>"></td>
						<td style="display:<?= $zichtbaar;?>;"><input type="text" name="kinder" value="<?= $kinder;?>" ></td>
						<td><input type="text" name="prijs" value="<?= $prijs;?>" ></td>
						<td><input type="text" name="reskost" value="<?= $reskost;?>"></td>
						<td><input type="button" name="Button" value="Annuleer" onClick="toggleLayer(\'uit\');"> 
						<input name="save_prod" type="submit" id="save_prod" value="Opslaan">	</td>
				</tr>	
				</form>
				
				<?
`				}
				else
				{
				?>
		  			<tr>
						<td><?= $datum_db;?></td>
						<td><?= $obj1->tijd;?></td>
						<td><?= $obj1->plaats;?></td>
						<td id="kinderen" style="display:<?= $zichtbaar;?>;"><?= $kinder;?></td>
						<td id="volwassenen"><?= $prijs;?></td>
						<td><?= $reskost;?></td>
					</tr>
				<?
				}
				
		}
				 
				
				
	  ?>