Assuming css2 is required, the following result was found.
{ show Tab_Section_7; v_SelectedTab = 7; } else { show Tab_Section_1; v_SelectedTab = 1; } // // highlight selected tab v_Css2 = ""; v_Css2 = v_Css2 + ".zc-Tabs-group .choice-table-row:nth-child(" + v_SelectedTab + ")...