function initDataGrid(gridName, addEventBtn, delEventBtn, controller) {
    var fullGridName = gridName + "-datagrid";
    var gridSelector = "[name='" + fullGridName + "']";
    var setting = window[gridName];
    var datagrid = $(gridSelector).removeAttr('width').DataTable({
        pageLength: 25,
        dom: getDom(setting),
        buttons: createButtons(gridName),
        "sAjaxSource": urlPrefix + controller + "/DataGridAjaxHandler",
        "fnServerData": function (sSource, aoData, fnCallback) {
            datagridOverlayOn(gridName);

            aoData.push({ "name": "gridFilters", "value": JSON.stringify($("[name='" + fullGridName + "-filter-form']").serializeArray()) });
            aoData.push({ "name": "gridName", "value": gridName });
            aoData.push({ "name": "db", "value": setting.db });

            $.ajax({
                "dataType": 'json',
                "type": "POST",
                "url": urlPrefix + controller + "/DataGridAjaxHandler",
                "data": aoData,
                "success": function (data) {
                    if (data.success === false) {
                        datagridOverlayOff(gridName);
                        $('.datagrid-error-content').text(data.message);
                        $('.datagrid-error-modal').appendTo("body").modal('show');
                    } else {
                        datagridOverlayOff(gridName);
                        fnCallback(data); //<-- WHEN data HAS lenght == 13 THEN MY PROBLEM OCCURS RIGHT AFTER THIS LINE IS CALLED
                    }
                },
                "error": function (error) {
                    datagridOverlayOff(gridName);
                    $('.datagrid-error-content').text(error.responseText);
                    $('.datagrid-error-modal').appendTo("body").modal('show');
                }
            });
        },
        "columnDefs": createColumnDefs(gridName, addEventBtn, delEventBtn),
        "bProcessing": true,
        "aaSorting": [],
        "bAutoWidth": true,
        "autoWidth": true,
        "responsive": true,
        "bPaginate": setting.pagination,
        "ordering": setting.ordering,
        "colReorder": false,
        "lengthMenu": [15, 25, 50, 75, 100],
        "language": {
            url: urlPrefix + 'Localization/DataGrid/' + currentLanguage + '.json'
        },
        "scrollY": "440px",
        "scrollX": true,
        "fnInitComplete": function (oSettings, json) {
            if (gridName === 'grid_fds_web_dealer_list') {
                $('.dataTables_scrollHeadInner').css("box-sizing", "");
                $('.dataTables_scrollHeadInner').css("min-width", "100%");
            }
        },
        "createdRow": function (row, data, dataIndex) {
            var sysGridColumns = window[gridName].sysGridColumns;
            var rowColorIndex = _.findLastIndex(sysGridColumns, { Nazov: 'row_color' });

            //row_color musi byt v procke ako posledny !!!
            if (rowColorIndex > 0) {
                row.style.color = data[data.length - 1];
            }
        }
    });