[jQuery] JQuery 1.2.6 vs 1.3.2

[TRaymond]

I was trying out some sample script while trying to learn JQuery and
it appears that my script works fine under JQuery 1.2.6.  It does NOT
however work on 1.3.2.  Can anyone identify what the problem is?

<script type="text/javascript"  language="javascript">
    $(document).ready(function() {
        $("#ddlStates").change(function() {
            $("#ddlCities").html("");
            var StateID = $("#ddlStates > option[selected]").attr
("value");
            if (StateID != 0) {
                $.getJSON('/_httpHandlers/LoadCities.ashx?StateID=' +
StateID, function(cities) {
                    $.each(cities, function() {
                        $("#ddlCities").append($("<option></
option>").val(this['ID']).html(this['City']));
                    });
                });
            }
        });

    });
    </script>


Thanks,

Todd