我的 jqgrid 中有一个奇怪的行为。我突然注意到在我的最后一列之后有一个空白标题单元格，我想摆脱它。知道怎么做吗？
这是我的 jqgrid 的定义：
myGrid.jqGrid({
colNames: ['Order Id', 'a', b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
j', 'k', 'l', 'm'],
colModel: [
{ name: 'OrderId', index: 'OrderId', width: 58, editable: false, align: 'center' },
{ name: 'a', index: 'a', width: 68, editable: false, align: 'center', sortable: false },
{ name: 'b', index: 'b', width: 43, editable: false, align: 'center', sortable: false },
{ name: 'c', index: 'c', width: 48, editable: false, align: 'center', sortable: false },
{ name: 'd', index: 'd', width: 63, editable: false, align: 'center', sortable: false },
{ name: 'e', index: 'e', width: 123, editable: false, align: 'center', sortable: false },
{ name: 'f', index: 'f', width: 73, editable: false, align: 'center', sortable: false },
{ name: 'g', index: 'g', width: 123, editable: false, align: 'center', sortable: false },
{ name: 'h', index: 'h', width: 73, editable: false, align: 'center', sortable: false },
{ name: 'i', index: 'i', width: 78, editable: false, align: 'center', sortable: false },
{ name: 'j', index: 'j', width: 117, editable: false, align: 'center', sortable: false },
{ name: 'k', index: 'k', width: 53, editable: false, align: 'center', sortable: false },
{ name: 'l', index: 'l', width: 73, editable: false, align: 'center', sortable: false},
{ name: 'm', index: 'm', width: 43, editable: false, align: 'center', sortable: false} ],
pginput: false,
pgbuttons: false,
hidegrid: false,
pager: '#divPager',
gridview: true,
rownumbers: true,
rownumWidth: 20,
caption: 'Trading Positions',
loadonce: true,
viewrecords: true,
recordtext: "",
emptyrecords: "No trading positions to display",
shrinkToFit: false
});