jquery ajax

$('#btnSearch').click(function () {
$("#list").trigger("reloadGrid");
 var customernumber = $("#txtCustomernumber").val();
 var customername = $("#txtCustomername").val();
 var usindicia = $("#txtUSIndicia").val();
 var date = $("#txtCaptureddate").datepicker('getDate');
 var captureddate = $.datepicker.formatDate("mm/dd/yy", date);
 $.ajax({
 type: 'POST',
url: '../../AJAXHandler/IndividualCustomer/IndividualCustomerInfo.ashx?method=search',
 dataType: "json",
 data: { CustomerNumber: customernumber, CustomerName: customername, UsIndicia: usindicia, CaputredDate: captureddate },
 success: function (msg) {
 debugger;
 if (msg.d == "success") {
 alert("searching");
 }

 }
});
});

//postdata in jqgrid
postData: { CustomerNumber: function () { return $("#txtCustomernumber").val(); }, CustomerName: function () { return $("#txtCustomername").val(); }, UsIndicia: function () { return $("#txtUSIndicia").val(); }, CaputredDate: function () { return $.datepicker.formatDate("mm/dd/yy", $("#txtCaptureddate").datepicker('getDate')); } },