Chyba při generování javascriptu

<?php
header("Content-Type:text/javascript");
echo "document.write('";
echo '<div id="dn_obal">';
if(!isset($_GET["pocet"])){ $pocet=5; }
else { $pocet=$_GET["pocet"]; }
$vyber_posledni=mysql_query("SELECT * FROM `archiv` WHERE `neukazuj` = 0  ORDER BY `id` DESC LIMIT $pocet "); 
while ($zaznam=MySQL_Fetch_Array($vyber_posledni)):
echo '<div id="dn_singl">';
echo '<img src="'.$zaznam["cover"].'" id="dn_cover" alt="cover">';
echo '<h6>'.$zaznam["nazev"].'</h6>';
?>

<!-- FLASH PREHRAVAC -->
<!--[if !IE]> -->
<object type="application/x-shockwave-flash" data="http://dance-news.cz/flash/prehravac.swf" width="210" height="20">
<!-- <![endif]-->
<!--[if IE]>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
  width="195" height="20">
  <param name="movie" value="http://dance-news.cz/flash/prehravac.swf">
  <param name="FlashVars" value="mp3=<?php echo $zaznam["mp3"];?>&amp;showslider=1&amp;width=195&amp;bgcolor=202020&amp;bgcolor1=5A0000&amp;bgcolor2=5A0000&amp;slidercolor1=ffffff&amp;slidercolor2=ffffff">
<!--><!--dgx-->

  <param name="loop" value="true">
  <param name="menu" value="false">
  <param name="FlashVars" value="mp3=<?php echo $zaznam["mp3"];?>&amp;showslider=1&amp;width=210&amp;bgcolor=202020&amp;bgcolor1=5A0000&amp;bgcolor2=5A0000&amp;slidercolor1=ffffff&amp;slidercolor2=ffffff">
  <p>Nainstalujte si podporu FLASH.</p>
</object>
<!-- <![endif]-->
<!-- /FLASH PREHRAVAC  -->

<?php
echo "</div>";
endwhile;
echo '</div>';
echo "');";
?>