I am using jQuery 1.3.2, development version.

Please check the codes:

$(function() {

$.get("t.html", function(data) {

$(data).find(":header").each(function() {

// $("body").append("<div>" + $(this).html() + "</div>");

});

});

$("<h1>1</h1><h2>1.1</h2><h3>1.1.1</h3><div><h1>2</h1><h2>2.1</h2><h3>2.1.1</h3></div>")

.find(":header").each(function() {

$("body").append("<div>" + $(this).html() + "</div>");

});

});

Below things are shown in IE:

2

2.1

2.1.1

Expect ouput:

1

1.1

1.1.1

2

2.1

2.1.1

The headers out of "<div></div>" cannot be found by ":header" selector.