[jQuery] possible bug when parsing xml on IE7?

[jQuery] possible bug when parsing xml on IE7?


Hello,
First, I use the latest version of JQuery : 1.2.6
I try to get elements from xml returned by an ajax call.
It's works fine with FF2 but not with IE7.
here is my simple code :
$.ajax({ type: "POST",
            url: "myURL.do",
            data: "&hidden=getValue,
            dataType:"text/xml",
            success: function(xml)
            {
                alert($(xml).find("el").size());
            },
            error: function(error){alert("error");}
     });
and my xml returned from the server is :
<?xml version="1.0" encoding="utf-8"?> <node><leaf><field>ST_ID</
field><patterns><el>TO</el><el>DA</el></patterns></leaf></node>
size = 2 in FF2 and 0 in IE7
Don't know where the problem comes from, I try also with "//el", $
("el",xml).each...but no success.
Can someone help me with that?
Thanks for your help in advance