function updatecheckboxes()
{
showhide("Unknown", plugsShown & plugtype["Unknown"]);
showhide("u230V_f1_i16A_blue_cee", plugsShown & plugtype["u230V_f1_i16A_blue_cee"]);
showhide("u380_400V_f3_i16A_red_cee", plugsShown & plugtype["u380_400V_f3_i16A_red_cee"]);
showhide("u230V_1f_i10A_ground", plugsShown & plugtype["u230V_1f_i10A_ground"]);
showhide("u230V_1f_i10A_noground", plugsShown & plugtype["u230V_1f_i10A_noground"]);
showhide("u380_400V_f3_i32A_red_cee", plugsShown & plugtype["u380_400V_f3_i32A_red_cee"]);
showhide("Marechal", plugsShown & plugtype["Marechal"]);
}