TYPEMAP
PJS_Runtime *           T_PTRREF
PJS_Context *           T_PTRREF
PJS_Script *            T_PTRREF
JSFunction *            T_PTROBJ
PJS_TrapHandler *  T_PTRREF
jsval                   jsval

OUTPUT
jsval
    {
        SV *orz = sv_newmortal();
        /* Convert js value to perl */
        JSVALToSV(PJS_GetJSContext(cx), NULL, $var, &orz);
        sv_setsv($arg, orz);
        JS_GC(PJS_GetJSContext(cx));
    }