jQuery Grid Plugin - jqGrid

Hi all,

am facing a peculiar problem.  i have a jqgrid with a date column.  am doing form edit.  the edit functionality works just fine.  but when i try to add a new row, the popup dialog appears.  the datepicker also appears, when i select the value and hit submit, the date column in the grid is showing Nan-Nan.  i tried to use the same sample given in the website  http://www.ok-soft-gmbh.com/jq.....diting.htm.

if i use the same includes given in that website, it works fine.  but i use below one

<script src="~/Scripts/jquery/jquery-1.9.1.min.js"></script>

<script src="~/Scripts/jqgrid/js/src/jquery-ui-1.9.2.custom.min.js"></script>

<script src="~/Scripts/jqgrid/js/src/i18n/grid.locale-en.js"></script>

<script src="~/Scripts/jqgrid/js/src/jquery.jqGrid.js"></script>

my colmodel is

{ name: 'SignDate', index: 'SignDate', width: '200', jsonmap: 'cell.SignDate', editable: true, sorttype: 'date',

editable: true, formatter: 'date', formatoptions: {

srcformat: 'm-d-Y H:i:s',

newformat:'d-M-Y' },

                            editoptions: { dataInit: initDateEdit },  

and initDateEdit has

initDateEdit = function(elem) {

setTimeout(function() {

$(elem).datepicker({

dateFormat: 'dd-M-yy',

what include am i missing?  kindly help.

Thanks.