JQuery XML parsing

<script type="text/javascript">
        $(document).ready(function () {
 
            $.each(($.browser), function (i, val) {
 
            });
 
            $("#btnlookup").click(function () { lookup(); });
 
 
        });
           if (!$.browser.msie) {
                alert('this utility is available only for IE, please try JSONP for other browsers');
                 return;
            }
            var addressURL = "http://maps.googleapis.com/maps/api/geocode/xml?address=" + $("#txtAddress").val() + "&sensor=false";
            alert(addressURL);
            $("#output").text("");
            $.ajax({
                url: addressURL,
                dataType: "xml",
                success: function (response) {
                    if (!$.isXMLDoc(response)) {
                        var outputStr = "Result is not valid XML Format";
                        $(outputStr).appendTo($("#output"));
                    }
                    $.each($(response).find('result'), function () {
                        var outputStr = "
" + "" + $(this).find('formatted_address').text() + "
lat:" + $(this).find("location").find("lat").text() + ", lng" + +$(this).find("location").find("lng").text() + "
" + "
";
                        $(outputStr).appendTo($("#output"));
 
                    });
 
                }, //sccess
                error: function (response) {
 
                    var outputStr = "" + response.status + "";
                    $(outputStr).appendTo($("#output"));
                }
 
            }//ajax options
                            );
 
        }
    script>