Bir diger alternatif:
<?php
// Once veritabanina baglan.
$sql = "SELECT * FROM duyurular";
$que = mysql_query($sql);
while($row=mysql_fetch_assoc($que)) :
echo "<marquee direction='up'>";
echo "<a href='duyurular.php?id=".$row['id']."'>".$row['baslik']."</a><br>";
echo "</marquee>";
endwhile;
?>