drop-down list Problem in Asp.net MVC 3

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MVC

I have passed value from one drop down list to another but from another drop down list i can not pass value to the Text Boxes.
My first first drop down JQuery which pass value to the second

<script type="text/javascript">

    $('#DeptID').change(function () {
            $.ajaxSetup({ cache: false });
            var selectedItem = $(this).val();
            if (selectedItem == "" || selectedItem == 0) {
                var items = "<option value=''></option>";
            } else {
                $.post('<%: ResolveUrl("~/Inventory/EmployeeList?ClassID=")%>' + $("#DeptID > option:selected").attr("value"), function (data) {
                    var items = "";
                    var items1 = "";
                    var isSeleted = '';
                    if (data.Selected) {
                        isSeleted = " selected='selected'";
                    }
                    $.each(data, function (i, data) {
                        items += "<option value='" + data.Value + isSeleted + "'>" + data.Text + "</option>";
                    });
                    $("#EMPID").html(items);
                    $("#EMPID").removeAttr('disabled');
                });
            }
        });
                   
</script>
The second Drop Down List JQuery like:
<script type="text/javascript">

     $('#EMPID').change(function () {
       $.post('<%: ResolveUrl("~/Inventory/GetEmployeeInfo?UserID=")%>' + $("#EMPID > option:selected").attr("value"), function (data) {
             $('input:text[id$=MonitorID]').val(data.MonitorID);
             $('input:text[id$=UPSID]').val(data.UPSID);

         });

     }); 
</script>

But when I pass value to the controller using the second Drop Down list it take the first Drop Down value like 'DeptID '... I want to EMPID value and want to show all information of a employee in the Text Boxes....

How can I solve my problem