[jQuery] Problem with AJAX parsing

[jQuery] Problem with AJAX parsing


Hello, I'm stuck with a big problem: when I make an AJAX call I
receive a response object which I parse with jQuery:
$.ajax({
    url: 'myUrl.html',
    complete: function(m){
                var txt = $(m.responseText);
                alert($(m.responseText).find('#myDiv').html());
            }
    });
In Firefox, Safari and latest IEs (7 & 8) I get the correct content.
In IE6 instead I don't get anything and the browser crashes.
Any hint on this? How can I parse my response (is a HTML page)?
Thank you,
Mitch.