How to make filter toolbar in JQGrid case insensitive and set a place holder in it?

Sometimes I was not getting some small things easily. Today my problem is I am using JQgrid in that I was using filter toolbar to search. It is working fine, but what I need is that search is only doing with case sensitive. Example:"A" If I give it is showing Result Antony. But if I give "a" its not showing anything how to I make it case in sensitive. Here is my code: ``` <script type="text/javascript"> $(document).ready(function () { var lastsel3; var cl; var a = new Date(); var QColName = a.getFullYear(); var Q4ColName = (a.getFullYear()) + 1; var json_string = document.getElementById("hdntxt").value; if (json_string.length > 0) { var search_result = $.parseJSON(json_string); } jQuery("#gvLockHistory").jqGrid({ contentType: "application/json; charset=utf-8", height: 'auto', width: '480', gridview: true, datatype: "local", data: search_result, colNames: ['Type', 'Month', 'Action'], colModel: [ { name: 'LockType', index: 'LockType', editable: false, sortable: true, align: 'center',width:158 }, { name: 'MonthYearStringValue', index: 'MonthYearStringValue', editable: false, sortable: false, align: 'center', width: 157 }, { name: 'IsActive', index: 'IsActive', editable: true, align: 'center', sortable: false, search: false, width: 150 } ], rowNum: 8, pager: '#pager', rowList: [8, 10, 20, 30], multipleSearch: true, multipleGroup: true, shrinkToFit: false, viewrecords: true, caseSensitive: false, sortorder: "desc", //editurl: "server.php", gridComplete: function () { var ids = jQuery("#gvLockHistory").jqGrid('getDataIDs'); for (var i = 0; i < ids.length; i++) { cl = ids[i]; //be = "<input class='btn btn-mini' type='button' value='Unlock' onclick=\"unlock('" + cl + "');\" />"; be = "<input class='btn btn-mini' type='button' value='Unlock' onclick=\"unlock('" + cl + "');\" />"; jQuery("#gvLockHistory").jqGrid('setRowData', ids[i], { IsActive: be }); } } }); ``` This is i was search in net to make case insensitive but its not working ``` $("#gvLockHistory").filterToolbar({ stringResult: true, searchOnEnter: false,defaultSearch:"cn"}); }); ``` Please help me thanks in advance. And please don't forget about the place holder which need to display in filter section.