XML parser - IE chyba

<?php
require("db.php");

function parseToXML($htmlStr) 
{ 
$xmlStr=str_replace('<','&lt;',$htmlStr); 
$xmlStr=str_replace('>','&gt;',$xmlStr); 
$xmlStr=str_replace('"','&quot;',$xmlStr); 
$xmlStr=str_replace("'",''',$xmlStr); 
$xmlStr=str_replace("&",'&amp;',$xmlStr); 
return $xmlStr; 
} 


$query = "SELECT * FROM tabule";
$result = mysql_query($query);
if (!$result) {
  die('Invalid query: ' . mysql_error());
}

header("Content-type: text/xml; charset=CP1250");

// Start XML file, echo parent node
echo '<markers>';

// Iterate through the rows, printing XML nodes for each
while ($row = @mysql_fetch_assoc($result)){
  // ADD TO XML DOCUMENT NODE
  echo '<marker ';
  echo 'name="' . parseToXML($row['nazev']) . '" ';
  echo 'lat="' . rad2deg ($row['sirka']) . '" ';
  echo 'lng="' . RAD2DEG ($row['delka']) . '" ';
  echo 'type="' . $row['id'] . '" ';
  echo '/>';
}

// End XML file

echo '</markers>';

?>