diff --git a/src/ecmascript/mujs.cpp b/src/ecmascript/mujs.cpp
index b3405e2e0..801cdbf86 100644
--- a/src/ecmascript/mujs.cpp
+++ b/src/ecmascript/mujs.cpp
@@ -330,6 +330,28 @@ mujs_eval_boolback(struct ecmascript_interpreter *interpreter,
 #endif
 }
 
+void
+addmethod(js_State *J, const char *name, js_CFunction fun, int n)
+{
+	const char *realname = strchr(name, '.');
+	realname = realname ? realname + 1 : name;
+	js_newcfunction(J, fun, name, n);
+	js_defproperty(J, -2, realname, JS_READONLY | JS_DONTENUM | JS_DONTCONF);
+}
+
+void addproperty(js_State *J, const char *name, js_CFunction getfun, js_CFunction setfun)
+{
+	const char *realname = strchr(name, '.');
+	realname = realname ? realname + 1 : name;
+	js_newcfunction(J, getfun, name, 0);
+	if (setfun) {
+		js_newcfunction(J, setfun, name, 1);
+	} else {
+		js_pushnull(J);
+	}
+	js_defaccessor(J, -3, realname, JS_READONLY | JS_DONTENUM | JS_DONTCONF);
+}
+
 struct module mujs_module = struct_module(
 	/* name: */		N_("mujs"),
 	/* options: */		NULL,
diff --git a/src/ecmascript/mujs.h b/src/ecmascript/mujs.h
index 8a3407c14..1d0b5f7a4 100644
--- a/src/ecmascript/mujs.h
+++ b/src/ecmascript/mujs.h
@@ -41,5 +41,8 @@ int mujs_eval_boolback(struct ecmascript_interpreter *interpreter, struct string
 
 //void mujs_call_function(struct ecmascript_interpreter *interpreter, JSValueConst fun, struct string *ret);
 
+void addmethod(js_State *J, const char *name, js_CFunction fun, int n);
+void addproperty(js_State *J, const char *name, js_CFunction getfun, js_CFunction setfun);
+
 extern struct module mujs_module;
 #endif
diff --git a/src/ecmascript/mujs/console.cpp b/src/ecmascript/mujs/console.cpp
index 5c58691cd..27516ab20 100644
--- a/src/ecmascript/mujs/console.cpp
+++ b/src/ecmascript/mujs/console.cpp
@@ -91,14 +91,9 @@ mjs_console_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_console_log, "console.log", 1);
-		js_defproperty(J, -2, "log", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_console_error, "console.error", 1);
-		js_defproperty(J, -2, "error", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_console_toString, "console.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "console.log", mjs_console_log, 1);
+		addmethod(J, "console.error", mjs_console_error, 1);
+		addmethod(J, "console.toString", mjs_console_toString, 0);
 	}
 	js_defglobal(J, "console", JS_DONTENUM);
 
diff --git a/src/ecmascript/mujs/history.cpp b/src/ecmascript/mujs/history.cpp
index a5a6d303b..c93a742c8 100644
--- a/src/ecmascript/mujs/history.cpp
+++ b/src/ecmascript/mujs/history.cpp
@@ -124,17 +124,10 @@ mjs_history_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_history_back, "history.back", 0);
-		js_defproperty(J, -2, "back", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_history_forward, "history.forward", 0);
-		js_defproperty(J, -2, "forward", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_history_go, "history.go", 1);
-		js_defproperty(J, -2, "go", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_history_toString, "history.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "history.back", mjs_history_back, 0);
+		addmethod(J, "history.forward", mjs_history_forward, 0);
+		addmethod(J, "history.go", mjs_history_go, 1);
+		addmethod(J, "history.toString", mjs_history_toString, 0);
 	}
 	js_defglobal(J, "history", JS_DONTENUM);
 
diff --git a/src/ecmascript/mujs/localstorage.cpp b/src/ecmascript/mujs/localstorage.cpp
index 90413a91c..c3c64d474 100644
--- a/src/ecmascript/mujs/localstorage.cpp
+++ b/src/ecmascript/mujs/localstorage.cpp
@@ -174,17 +174,10 @@ mjs_localstorage_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_localstorage_getitem, "localStorage.getItem", 1);
-		js_defproperty(J, -2, "getItem", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_localstorage_removeitem, "localStorage.removeItem", 1);
-		js_defproperty(J, -2, "removeItem", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_localstorage_setitem, "localStorage.setItem", 2);
-		js_defproperty(J, -2, "setItem", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_localstorage_toString, "localStorage.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "localStorage.getItem", mjs_localstorage_getitem, 1);
+		addmethod(J, "localStorage.removeItem", mjs_localstorage_removeitem, 1);
+		addmethod(J, "localStorage.setItem", mjs_localstorage_setitem, 2);
+		addmethod(J, "localStorage.toString", mjs_localstorage_toString, 0);
 	}
 	js_defglobal(J, "localStorage", JS_DONTENUM);
 
diff --git a/src/ecmascript/mujs/navigator.cpp b/src/ecmascript/mujs/navigator.cpp
index 6a6de2efc..3744afea2 100644
--- a/src/ecmascript/mujs/navigator.cpp
+++ b/src/ecmascript/mujs/navigator.cpp
@@ -145,8 +145,7 @@ mjs_navigator_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_navigator_toString, "navigator.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "navigator.toString", mjs_navigator_toString, 0);
 
 		js_newcfunction(J, mjs_navigator_get_property_appCodeName, "navigator.appCodeName", 0);
 		js_pushnull(J);
diff --git a/src/ecmascript/mujs/screen.cpp b/src/ecmascript/mujs/screen.cpp
index 2a7484a22..b7ba15c57 100644
--- a/src/ecmascript/mujs/screen.cpp
+++ b/src/ecmascript/mujs/screen.cpp
@@ -149,8 +149,7 @@ mjs_screen_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_screen_toString, "screen.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "screen.toString", mjs_screen_toString, 0);
 
 		js_newcfunction(J, mjs_screen_get_property_availHeight, "screen.availHeight", 0);
 		js_pushnull(J);
diff --git a/src/ecmascript/mujs/unibar.cpp b/src/ecmascript/mujs/unibar.cpp
index 8bb0c2ca4..ffaee8cc5 100644
--- a/src/ecmascript/mujs/unibar.cpp
+++ b/src/ecmascript/mujs/unibar.cpp
@@ -151,8 +151,7 @@ mjs_menubar_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_menubar_toString, "menubar.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "menubar.toString", mjs_menubar_toString, 0);
 
 		js_newcfunction(J, mjs_menubar_get_property_visible, "menubar.visible", 0);
 		js_newcfunction(J, mjs_menubar_set_property_visible, "menubar.visible", 1);
@@ -166,8 +165,7 @@ mjs_statusbar_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_statusbar_toString, "statusbar.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "statusbar.toString", mjs_statusbar_toString, 0);
 
 		js_newcfunction(J, mjs_statusbar_get_property_visible, "statusbar.visible", 0);
 		js_newcfunction(J, mjs_statusbar_set_property_visible, "statusbar.visible", 1);
diff --git a/src/ecmascript/mujs/window.cpp b/src/ecmascript/mujs/window.cpp
index 0249b0b80..c3cc9d009 100644
--- a/src/ecmascript/mujs/window.cpp
+++ b/src/ecmascript/mujs/window.cpp
@@ -460,11 +460,8 @@ mjs_window_init(js_State *J)
 {
 	js_newobject(J);
 	{
-		js_newcfunction(J, mjs_window_alert, "window.alert", 1);
-		js_defproperty(J, -2, "alert", JS_DONTENUM);
-
-		js_newcfunction(J, mjs_window_toString, "window.toString", 0);
-		js_defproperty(J, -2, "toString", JS_DONTENUM);
+		addmethod(J, "window.alert", mjs_window_alert, 1);
+		addmethod(J, "window.toString", mjs_window_toString, 0);
 	}
 	js_defglobal(J, "window", JS_DONTENUM);