jQuery Grid Plugin - jqGrid

When invoking the search form from clicking on the icon in the navigator the search form appears but is disabled. The rest of the grid is disabled as expected however the search form is also disabled. My grid does not use paging. I am wondering if this has something to do with it. I am using version 3.5 of the grid.

<script type="text/javascript">
    jQuery(document).ready(function() {
        jQuery("#equipgrid").jqGrid({
            url: '/EquipTrack/GridData/',
            editurl: '/EquipTrack/Edit/',
            datatype: 'json',
            mtype: 'GET',
            height: 255,
            width: 755,
            rowNum: 5000,
            colNames: ['ID', 'Type', 'Make', 'Model', 'Year', 'Location', 'Insp Due', 'Serv Due', 'Miles/Hrs', 'Milage Dt', 'Reg By', 'Mngd By', 'Mngd By Dt', 'Tag Exp', '', '', '', '', 'Vin Num', 'Title Num', 'GVW', 'Unlaiden Wt', 'Tag Num', 'Tag State', 'Fuel', 'Cost', 'Inspect Rmndr(wks)', 'Tag Rmndr(wks)', 'Stolen', 'Sold', 'Lojack', 'In Repair', 'Totaled', 'Hut Sticker', 'Apportioned', 'IFTA Sticker', 'Comment'],
            colModel: [
                   { name: 'equip_id', index: 'equip_id', width: 65, editable: true, search: true },
                  { name: 'type_desc', index: 'type_desc', width: 130, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetTypes'} },
                   { name: 'make_descr', index: 'make_descr', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetMakes'} },
                   { name: 'model_descr', index: 'model_descr', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetModels'} },
                   { name: 'equip_year', index: 'equip_year', width: 60, editable: true },
                   { name: 'work_loc', index: 'work_loc', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetLocations'} },
                { name: 'insp_due_dt', index: 'insp_due_dt', width: 100, editable: true,
                    editoptions: { size: 12, dataInit: function(el) {
                        $(el).datepicker({ dateFormat: 'mm/dd/yy' });
                    }
                    }
                },
                   { name: 'service_due_num', index: 'service_due_num', width: 80, editable: true },
                   { name: 'miles_hours', index: 'miles_hours', width: 80, editable: true },
                { name: 'miles_dt', index: 'miles_dt', width: 100, editable: true,
                    editoptions: { size: 12, dataInit: function(el) {
                        $(el).datepicker({ dateFormat: 'mm/dd/yy' });
                    }
                    }
                },
                   { name: 'registered_by', index: 'registered_by', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetDivisions'} },
                   { name: 'managed_by', index: 'managed_by', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetDivisions'} },
                   { name: 'managed_by_dt', hidden: true, editable: true, editrules: { edithidden: true },
                       editoptions: { size: 12, dataInit: function(el) {
                           $(el).datepicker({ dateFormat: 'mm/dd/yy' });
                       }
                       }
                   },
                   { name: 'tag_expire_dt', index: 'tag_expire_dt', width: 100, editable: true,
                       editoptions: { size: 12, dataInit: function(el) {
                           $(el).datepicker({ dateFormat: 'mm/dd/yy' });
                       }
                       }
                   },
                   { name: 'inspection_warn', hidden: true },
                   { name: 'service_warn', hidden: true },
                   { name: 'tag_warn', hidden: true },
                   { name: 'equip_color', hidden: true },
                   { name: 'vin_num', hidden: true, editable: true, editrules: { edithidden: true} },
                   { name: 'title_num', hidden: true, editable: true, editrules: { edithidden: true} },
                { name: 'gross_v_wt', hidden: true, editable: true, editrules: { edithidden: true} },
            { name: 'unlaiden_wt', hidden: true, editable: true, editrules: { edithidden: true} },
            { name: 'tag_num', hidden: true, editable: true, editrules: { edithidden: true} },
            { name: 'tag_state', hidden: true, editable: true, editrules: { edithidden: true} },
            { name: 'fuel_descr', index: 'fuel_descr', width: 80, editable: true, edittype: "select", editoptions: { dataUrl: '/EquipTrack/GetFuels'} },
            { name: 'cost', hidden: true, editable: true, editrules: { edithidden: true} },
               { name: 'insp_rmdr_wks', hidden: true, editable: true, edittype: "select", editoptions: { value: ":;1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:9;10:10;11:11;12:12;13:13;14:14;15:15;16:16;17:17;18:18;19:19;20:20;21:21;22:22;23:23;24:24" }, editrules: { edithidden: true} },
            { name: 'tag_expire_rmdr_wks', editable: true, hidden: true, edittype: "select", editoptions: { value: ":;1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:9;10:10;11:11;12:12;13:13;14:14;15:15;16:16;17:17;18:18;19:19;20:20;21:21;22:22;23:23;24:24" }, editrules: { edithidden: true} },
            { name: 'stolen', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'sold', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'lojack', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'in_repair', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'totaled', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'hut_sticker', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'apportioned', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'ifta_sticker', hidden: true, editable: true, edittype: "checkbox", editoptions: { value: "True:False" }, editrules: { edithidden: true} },
            { name: 'comment', hidden: true, editable: true, editoptions: { value: "True:False" }, editrules: { edithidden: true }, edittype: "textarea", editoptions: { rows: "2", cols: "27"} }
            ],
            sortname: 'equip_id',
            sortorder: "asc",
            afterInsertRow: function(rowid, rowdata, rowelem) {
                if (rowelem[14] == 'SET_RED') {
                    jQuery("#equipgrid").setCell(rowid, 'insp_due_dt', '', { color: 'red' })
                }
                if (rowelem[15] == 'SET_RED') {
                    jQuery("#equipgrid").setCell(rowid, 'service_due_num', '', { color: 'red' })
                }
                if (rowelem[16] == 'SET_RED') {
                    jQuery("#equipgrid").setCell(rowid, 'tag_expire_dt', '', { color: 'red' })
                }
                if (rowelem[17] == 'SET_GREEN') {
                    jQuery("#equipgrid").setCell(rowid, 'equip_id', '', { color: 'green' })
                }
                if (rowelem[17] == 'SET_PURPLE') {
                    jQuery("#equipgrid").setCell(rowid, 'equip_id', '', { color: 'purple' })
                }
                if (rowelem[17] == 'SET_BLUE') {
                    jQuery("#equipgrid").setCell(rowid, 'equip_id', '', { color: 'blue' })
                }
                //                if (rowelem[12] == '01/01/3000') {
                //                    jQuery("#equipgrid").setCell(rowid, 'tag_expire_dt','', '')
                //                }
            },
            viewrecords: true,
            pager: jQuery('#equipgridp'),
            caption: 'Inventory for <%= ViewData["division"] %>',
            ondblClickRow: function(rowid) { $("#equipgrid").editGridRow(rowid, editprm); },
            onSelectRow: function(ids) {
                if (ids != null) {
                    var data = $("#equipgrid").getRowData(ids);
                    jQuery("#equip_svc").setGridParam({ url: "/EquipTrack/GetServiceGridData/" + data.equip_id, page: 1 })
                .trigger('reloadGrid');
                    jQuery("#equip_asgn").setGridParam({ url: "/EquipTrack/GetAssignGridData/" + data.equip_id, page: 1 })
                .trigger('reloadGrid');
                }
            }
        }).navGrid('#equipgridp', {edit:true, add:true, del:true, search:true}, //options
         {reloadAfterSubmit: false, jqModal: false, closeOnEscape: true, closeAfterEdit: true,
         afterSubmit: function(response, postdata) {

             if (response.responseText == "Success") {
                 jQuery("#success").show();
                 jQuery("#success").html("Equipment successfully updated");
                 jQuery("#success").fadeOut(6000);

                 return [true, response.responseText]
             }
             else {
                 return [false, response.responseText]
             }
         }
     }, // edit options
         {reloadAfterSubmit: false,
         afterSubmit: function(response, postdata) {

             if (response.responseText == "Success") {
                 jQuery("#success").show();
                 jQuery("#success").html("Equipment successfully added");
                 jQuery("#success").fadeOut(6000);

                 return [true, response.responseText]
             }
             else {
                 return [false, response.responseText]
             }
         }
     }, // add options
         {reloadAfterSubmit: false, closeOnEscape: true, closeAfterAdd: true,
         afterSubmit: function(response, postdata) {

             if (response.responseText == "Success") {
                 jQuery("#success").show();
                 jQuery("#success").html("Equipment successfully deleted");
                 jQuery("#success").fadeOut(6000);

                 return [true, response.responseText]
             }
             else {
                 return [false, response.responseText]
             }
         }
     }, // del options
         {}, // search options
         {} // view options
          );
        $('#equipgridp_center').remove();
        $('#equipgridp_right').remove();