jQuery Grid Plugin - jqGrid

Hello, great grid!

With IE8 and jqGrid 3.6.5, the second filter received by the server is "op":"undefined". With Firefox, the second filter is correct.

Here are the IE8 filters received by the server:

[filters] => {"groupOp":"AND","rules":[{"field":"date_time","op":"eq","data":"05/07/2010"},{"field":"source","op":"undefined","data":"B"}]

Here is the grid definition:

<script type="text/javascript">
  jQuery(document).ready(function($) {
  url_id = 'query.php?_name=prices&_type=jqGrid_XML&ins_no='+ins_no.value;
  price_codes = $.ajax({url: 'query.php?_name=prices_codes&_type=jqGrid_Value',
             async: false}).responseText;
  function defaultPriceCode() { return 'C'; /* Close */ }
  function defaultSource() { return 'M'; /* Manual */ }
  $("#prices_grid").jqGrid({
   caption: 'Prices',
   url: url_id,
   editurl: url_id,
   colNames:['Date','Price Code','Source','Price'],
   colModel :[
    {name:'date_time', index:'date_time', width:110, editable:true,
     editrules:{required:true}, edittype:'text',
     editoptions:{maxlength:10, dataInit: datePick},
     stype:'text', searchoptions:{dataInit: datePick}},
    {name:'price_cd', index:'price_cd', width:150, formatter:'select',
     sortable:false, editable:true, editrules:{required:true},
     edittype:'select', editoptions:{value:price_codes},
     stype:'select', searchoptions:{value:price_codes,
     dataInit: function(elem) { $(elem).val(defaultPriceCode()); }}},
    {name:'source', index:'source', width:200, formatter:'select',
     sortable:false, editable:true, editrules:{required:true},
     edittype:'select', editoptions:{value:sources},
     stype:'select', searchoptions:{value:sources,
     dataInit: function(elem) { $(elem).val(defaultSource()); }}},
    {name:'price', index:'price', width:110, editable:true,
     editrules:{required:true, number:true}, edittype:'text'}],
   pager: 'prices_pager'
  });
  if(ins_no.value.length > 0) {
   $("#prices_grid").navGrid('#prices_pager',
    {refresh: true, edit: true, add: true, del: true, search: true},
    { // edit options
     beforeShowForm: function(formid) {
      // disable keys
      for(var key in {'#date_time':1, '#price_cd':1, '#source':1})
       $(key,formid).attr('disabled',true);
     },
     afterSubmit: afterSubmit,
     closeAfterEdit: true
    },
    { // add options
     beforeShowForm: function(formid) {
      // enable keys
      for(var key in {'#date_time':1, '#price_cd':1, '#source':1})
       $(key,formid).removeAttr('disabled');
      // default values
      $('#price_cd',formid).val(defaultPriceCode());
      $('#source',formid).val(defaultSource());
     },
     afterSubmit: afterSubmit,
     closeAfterAdd: true
    },
    { // delete options
     onclickSubmit: function(eparams) {
      var rowId = $('#prices_grid').getGridParam('selrow');
      var row = $('#prices_grid').getRowData(rowId);
      return {date_time: row.date_time, price_cd: row.price_cd, source: row.source};
     },
     afterSubmit: afterSubmit
    },
    { // search options
     closeAfterSearch: true
    }
   );
  }   
  });
</script>
<table id="prices_grid"></table>
<div id="prices_pager"></div>

Thanks!

Brian