grid新增行，删除行

function menuClick2(id) {
					if (id == "audit.book.receiptDetailEdit.add2") {
						addEnter();
					} else if (id == "audit.book.receiptDetailEdit.delete2") {
						var id = grid.getSelectedId();
						if (id == null || id == "") {
							skysz.msg.info("请选择要删除的行.");
							return;
						}
						grid.deleteSelectedItemByIndex();
					}

				}

var addCount = 0;
				function addEnter() {
					grid.addRowByIndex("K" + addCount, '');
					addCount++;
				}