post with jquery 1.5.1 and IE6

post with jquery 1.5.1 and IE6

Hello,

I got a problem with the jquery post method.
I have these two scripts:

The main site
  1. <?php
    echo "<div style='border:solid 1px black;' id='in'>test</div>";
    echo "<div style='border:solid 1px black; background-color:red' id='out'></div>";
    ?>
    <script type="text/javascript" src="../intern/jquery/jquery-1.5.1.js"></script>
    <script type="text/javascript">
    $("#in").click(function(){
    $("#out").html("lade...");
    $.post("post.php", function(data){
    $("#out").html($(data).find("text").text());
    }, "xml");
    });
    </script>












And the post script

  1. <?php
    header("Content-type:text/xml; charset='iso-8859-1'");
    echo "<?xml version='1.0' encoding='latin1'?>";
    echo "<return>";
    echo "<text>1</text>";
    echo "<art>2</art>";
    echo "<thema>3</thema>";
    echo "</return>";
    ?>









Please dont mess about the php :).
Now when I click on div "in" the text of div "out" change to "loading", but nothing more happens. 
And this only appears in IE6! And thats the problem with all my post functions when I use jquery 1.5.1 :(

Do you have a suggestion?