jQuery Grid Plugin - jqGrid

Hi,

I'm new to JQGrid need help with changing the save option to control enter instead of Enter. Also my other issue is regarding fetching saved row when i click on another row after edit as it always showing data prior to update (Update is working successfully). I'm attaching code here for reference. Thanks for all your valuable feedback's :-

function buildgrid() {
        var grid = jQuery("#Northwinds");
        var gridData;
        grid.jqGrid({
            url: '/sites/cats/_vti_bin/listdata.svc/TSCMaster',
            datatype: 'json',
            sortable: true,
            rownumbers: false,
            jsonReader: {
                root: "d.results",
                repeatitems: false
            },
               success: function(data){
            var $self = $(this);
                    setTimeout(function () {
                    $self.trigger("reloadGrid");
                    }, 50);
        },
        afterSubmit: function () {
                $(this).jqGrid("setGridParam", {datatype: 'json'});
                return [true];
        },
            colNames: [" ", "Script Page", "Scene #", "Item Description", "Comments/Restrictions","url","etag"],
            colModel: [
        {name: 'myac', width:80, fixed:true, sortable:false, resize:false, formatter:'actions',
            formatoptions:{keys:true}},
        {
                name: 'ScriptPage',
                editable: true,
                sortable: true,
                index: 'ScriptPage',
            search: false,
                width: 75},
            {
                name: 'SceneNumber',
                editable: true,
                sortable: true,
            search: false,
                index: 'SceneNumber',
                width: 75},
            {
                name: 'ItemDescription',
                editable: true,
                sortable: true,
                index: 'ItemDescription',
                width: 300},
        {
            name:'CommentsRestrictions',
              index:'CommentsRestrictions',
            editable:true,
            width :600,
                    edittype:'custom',
            editoptions:{custom_element:function( value , options) {
                var elm = $('<textarea rows=4 cols=100></textarea>');
                elm.val( value );
                // give the editor time to initialize
                setTimeout( function() {
                    tinymce.init({selector: "textarea#" + options.id
            });
                }, 0);
                return elm;
                  },
                  custom_value:function( element, oper, gridval) {
            var id = element[0].id;
                    if(oper === 'get') {
                    return tinymce.get(id).getContent({format: 'row'});
                    } else if( oper === 'set') {
                    if(tinymce.get(id)) {
                        tinymce.get(id).setContent( gridval );
                           }
                        }
              }
            }
              },
                {   
            name: '__metadata.uri',  
            editable: false,
            hidden: true,
            width: 400},
                {   
            name: '__metadata.etag',  
            editable: false,width: 100,
            hidden: true}],
            onSelectRow: function(id) {
 
                    var rowData = $("#Northwinds").getRowData(id);
                    var newUrl = rowData['__metadata.uri'];
                    $(this).setGridParam({
                    'editurl': newUrl
                });
                if (id && id !== lastSel) {
                    $("#Northwinds").restoreRow(lastSel);
 
                    lastSel = id;
                }
                $("#Northwinds").editRow(id, true, null, null);
        
            },
        
        serializeRowData: function(postdata) { //USED ON EDIT
                    var x = JSON.stringify(postdata);
                    return x;
            },
            ajaxRowOptions: { // USED ON EDIT
                    contentType: 'application/json; charset=utf-8',
                    datatype: 'json',
                    mtype: 'POST',
                    async: true,
                beforeSend: function(jqXHR, settings) {
                    grid = $("#Northwinds").jqGrid(); // get the selected row
                    this.selectedRow = grid.jqGrid('getGridParam', 'selrow'); // add the selected row to the ajax object so we can get at in in the callback
                    var etag = grid.jqGrid('getCell', this.selectedRow, '__metadata.etag');
                    jqXHR.setRequestHeader("X-HTTP-Method", "MERGE");
                    jqXHR.setRequestHeader("If-Match", etag);
 
                    var postdata = $.parseJSON(settings.data);
                    delete postdata['oper']; // dont send operation to the server
                    delete postdata['id']; // dont send operation to the server
                    delete postdata["__metadata.etag"];
                    delete postdata["__metadata.uri"];
 
                    settings.data = JSON.stringify(postdata);
 
                },  
        success: function(data, textStatus, jqXHR) {
                    // requery the resource to get the new etag // this is due to a bug in ie that drops all headers associated with an h204
                    var selectedRow = this.selectedRow;
                    $.ajax({
                            beforeSend: function(jqXHR, settings) { // need to pass the selectedRow to the second (nested callback)
                                this.selectedRow = selectedRow;
                        },
                        async: false,
                        contentType: 'application/json; charset=utf-8',
                        datatype: 'json',
                        url: this.url,
                        success: function(data, textStatus, jqXHR) {
                            var etag = jqXHR.getResponseHeader("ETag");
                            $("#Northwinds").jqGrid("setCell", this.selectedRow, "__metadata.etag", etag); // update the etag on the selected row
                            }
                    })
          }
                },
        loadComplete: function (data) {
               //setSearchSelect(grid, griddata, 'Category', 'eq');         
            },
        pager: "#pager",    
            rowNum: 1000,
        rowList: [10, 50, 100, 500, 'All'],
        height: 'auto',
        loadonce:true,
        reloadAfterSubmit: true,
        viewrecords: true,
        gridview: true, // insert all the data at once (speedy)
        caption: 'Theatrical Clearance List'
        });