Need an else statement

function OnClientItemClickingCollapse(sender, args) {
            var item = args.get_item();
            var grdAFS = $find("<%=grdAvailableForSale.ClientID %>");
            var MasterTable = grdAFS.get_masterTableView();
            var selectedRows = MasterTable.get_selectedItems();
            if (item.get_text() == "Collapse") {
                if (selectedRows.length == 1) {
                    alert("Only 1 Row Selected!");
                }
                else {
                    args.set_cancel(!confirm("Are you sure you want to collapse these items?"));
                    selectedRows.clear;
                }
            }
            else if (item.get_text() == "SplitTaxes") {
                vdataItemIndex = $find("<%=grdAvailableForSale.MasterTableView.ClientID%>").get_selectedItems()[0];
                var afsid = vdataItemIndex.get_cell("afsid").innerHTML;
                var afsSource = vdataItemIndex.get_cell("afsSource").innerHTML;
                var afsSourceDetail = vdataItemIndex.get_cell("afsSourceDetail").innerHTML;
                var mymessage = afsSource.substring(0, 2)
                //arrValues = ["ALL", "P01", "P02", "P03", "P04", "P05"]
//                if (mymessage == "LT") {
//                    args.set_cancel(!confirm("Are you sure you want to split taxes? afsSource: " + afsSource + " afsid: " + afsid));
//                }
                arrValues = ["ALL", "P01", "P02", "P03", "P04", "P05"]
                if (mymessage == "LT" && (arrValues.contains(afsSourceDetail))) {
                    args.set_cancel(!confirm("Are you sure you want to split taxes? afsSource: " + afsSource + " afsid: " + afsid));
                selectedRows.clear;
                }
            }
        }
                              

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