diff --git a/honoka/src/anthyconversion.cpp b/honoka/src/anthyconversion.cpp
index 3651530..4c6f0b5 100644
--- a/honoka/src/anthyconversion.cpp
+++ b/honoka/src/anthyconversion.cpp
@@ -167,5 +167,10 @@
     return(String("Anthy"));
 }
 
+String AnthyConversion::getPropertyName()
+{
+    return(String("Anthy"));
+}
+
 #endif
 
diff --git a/honoka/src/anthyconversion.h b/honoka/src/anthyconversion.h
index 5cdc83d..9660501 100644
--- a/honoka/src/anthyconversion.h
+++ b/honoka/src/anthyconversion.h
@@ -65,6 +65,8 @@
     virtual void disconnect();
     virtual int getCaretPos();
     virtual String getName();
+    virtual String getPropertyName();
+
 
 protected:
     void buildResult();
diff --git a/honoka/src/convertor.cpp b/honoka/src/convertor.cpp
index ccc4d1b..965d0b9 100644
--- a/honoka/src/convertor.cpp
+++ b/honoka/src/convertor.cpp
@@ -99,3 +99,8 @@
 {
     return(String("Convertor"));
 }
+
+String Convertor::getPropertyName()
+{
+    return(getName());
+}
diff --git a/honoka/src/convertor.h b/honoka/src/convertor.h
index bc23d47..48af48c 100644
--- a/honoka/src/convertor.h
+++ b/honoka/src/convertor.h
@@ -66,6 +66,7 @@
     virtual void disconnect();
     virtual int getCaretPos();
     virtual String getName();
+    virtual String getPropertyName();
 
 protected:
     ConfigPointer config;
diff --git a/honoka/src/honoka_def.h b/honoka/src/honoka_def.h
index 7aee6a9..dff816f 100644
--- a/honoka/src/honoka_def.h
+++ b/honoka/src/honoka_def.h
@@ -65,6 +65,10 @@
 #define HONOKA_DEFAULT_KEY_CONVERT_HALF            "F6"
 #define HONOKA_CONFIG_KEY_CONVERT_WIDE             "/IMEngine/Honoka/Key/ConvertWide"
 #define HONOKA_DEFAULT_KEY_CONVERT_WIDE            "F5"
+#define HONOKA_CONFIG_KEY_NEXT_CONVERTOR           "/IMEngine/Honoka/Key/NextConvertor"
+#define HONOKA_DEFAULT_KEY_NEXT_CONVERTOR          "Control+Page_Down"
+#define HONOKA_CONFIG_KEY_PREV_CONVERTOR           "/IMEngine/Honoka/Key/PrevConvertor"
+#define HONOKA_DEFAULT_KEY_PREV_CONVERTOR          "Control+Page_Up"
 
 #define HONOKA_CONFIG_KEY_CONVERSION_IKEIJI        "/IMEngine/Honoka/Key/ConversionIkeiji"
 #define HONOKA_DEFAULT_KEY_CONVERSION_IKEIJI       "Shift+F8"
@@ -104,9 +108,10 @@
   #define HONOKA_DEFAULT_YOSOKU                      false
 #endif
 
-#define SCIM_PROP_WNN_MODESTATUS                     "/IMEngine/Honoka/Property/ModeStatus"
-#define SCIM_PROP_WNN_INPUTMODE                      "/IMEngine/Honoka/InputMode"
-#define SCIM_PROP_WNN_CONVERSIONMODE                 "/IMEngine/Honoka/ConversionMode"
+#define HONOKA_PROP_MODESTATUS                     "/IMEngine/Honoka/Property/ModeStatus"
+#define HONOKA_PROP_INPUTMODE                      "/IMEngine/Honoka/InputMode"
+#define HONOKA_PROP_CONVERSIONMODE                 "/IMEngine/Honoka/ConversionMode"
+#define HONOKA_PROP_CONVERTOR                      "/IMEngine/Honoka/Convertor"
 
 
 // Romkan
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index b8baa35..c381652 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -183,7 +183,14 @@
     preeditors.push_back(new Romkan(_scim_config));
     preeditors.push_back(new KanaInput(_scim_config));
     m_preeditor = preeditors.at(0);
-    m_convertor = 0;
+    
+    convertors.push_back(new WnnConversion(_scim_config));
+    #ifdef HAVE_LIBANTHY
+    convertors.push_back(new AnthyConversion(_scim_config));
+    #endif
+    m_convertor = convertors.at(0);
+
+
     init();
 }
 
@@ -213,14 +220,6 @@
     yosoku = _scim_config->read(String(HONOKA_CONFIG_YOSOKU),HONOKA_DEFAULT_YOSOKU);
     sType = _scim_config->read(String(HONOKA_CONFIG_SERVERTYPE),String(HONOKA_DEFAULT_SERVERTYPE));
     
-    if (m_convertor) delete(m_convertor);
-    #ifdef HAVE_LIBANTHY
-    if (sType == "Anthy")
-        m_convertor = new AnthyConversion(_scim_config);
-    else 
-    #endif
-        m_convertor = new WnnConversion(_scim_config);
-
     
     defaultPreEditor = _scim_config->read(String(HONOKA_CONFIG_DEFAULT_PREEDITOR),String(HONOKA_DEFAULT_DEFAULT_PREEDITOR));
     auto_conversion = _scim_config->read(String(HONOKA_CONFIG_AUTO_CONVERSION),HONOKA_DEFAULT_AUTO_CONVERSION);;
@@ -305,6 +304,12 @@
     scim_string_to_key_list(k_auto_conversion,
         _scim_config->read(String(HONOKA_CONFIG_KEY_AUTO_CONVERSION),
             String(HONOKA_DEFAULT_KEY_AUTO_CONVERSION)));
+    scim_string_to_key_list(k_next_convertor,
+        _scim_config->read(String(HONOKA_CONFIG_KEY_NEXT_CONVERTOR),
+            String(HONOKA_DEFAULT_KEY_NEXT_CONVERTOR)));
+    scim_string_to_key_list(k_prev_convertor,
+        _scim_config->read(String(HONOKA_CONFIG_KEY_PREV_CONVERTOR),
+            String(HONOKA_DEFAULT_KEY_PREV_CONVERTOR)));
 
     changePreEditor(defaultPreEditor);
 
@@ -329,6 +334,22 @@
 }
 
 
+
+/*!
+    \fn HonokaInstance::changeConvertor(const String &name)
+ */
+void HonokaInstance::changeConvertor(const String &name)
+{
+    for(unsigned int i = 0;i < convertors.size();i ++) {
+        if (convertors[i]->getPropertyName() == name) {
+            m_convertor = convertors[i];
+            return;
+        }
+    }
+    return;
+}
+
+
 /*!
     \fn HonokaInstance::updateProperty()
  */
@@ -336,32 +357,44 @@
 {
     if (m_proplist.empty()) {
         Property p;
-        p = Property(SCIM_PROP_WNN_INPUTMODE,"",String(""),_("input mode"));
+        p = Property(HONOKA_PROP_INPUTMODE,"",String(""),_("input mode"));
         m_proplist.push_back(p);
         for(unsigned int i = 0;i < preeditors.size();i ++) {
-            p = Property(String(SCIM_PROP_WNN_INPUTMODE) + String("/") + preeditors[i]->getPropertyName(),
+            p = Property(String(HONOKA_PROP_INPUTMODE) + String("/") + preeditors[i]->getPropertyName(),
                 preeditors[i]->getName(),String(""),_("mode status"));
             m_proplist.push_back(p);
         }
-        p = Property(SCIM_PROP_WNN_MODESTATUS,"",String(""),_("mode status"));
+        p = Property(HONOKA_PROP_CONVERTOR,"",String(""),_("convertor"));
         m_proplist.push_back(p);
-        p = Property(SCIM_PROP_WNN_CONVERSIONMODE,"",String(""),_("conversion mode"));
+        for(unsigned int i = 0;i < convertors.size();i ++) {
+            p = Property(String(HONOKA_PROP_CONVERTOR) + String("/") + convertors[i]->getPropertyName(),
+                convertors[i]->getName(),String(""),_("mode status"));
+            m_proplist.push_back(p);
+        }
+        p = Property(HONOKA_PROP_MODESTATUS,"",String(""),_("mode status"));
+        m_proplist.push_back(p);
+        p = Property(HONOKA_PROP_CONVERSIONMODE,"",String(""),_("conversion mode"));
         m_proplist.push_back(p);
     }
     PropertyList::iterator it;
-    it = find(m_proplist.begin(),m_proplist.end(),SCIM_PROP_WNN_INPUTMODE);
+    it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_INPUTMODE);
     if (it != m_proplist.end()) {
         it->set_label(m_preeditor->getName());
     }
     update_property(*it);
-    it = find(m_proplist.begin(),m_proplist.end(),SCIM_PROP_WNN_MODESTATUS);
+    it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_CONVERTOR);
+    if (it != m_proplist.end()) {
+        it->set_label(m_convertor->getName());
+    }
+    update_property(*it);
+    it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_MODESTATUS);
     if (it != m_proplist.end()) {
         if (m_conversion) it->set_label(_("Kanji"));
         else if (m_yosoku) it->set_label(_("Yosoku"));
         else it->set_label(m_preeditor->getModeName());
     }
     update_property(*it);
-    it = find(m_proplist.begin(),m_proplist.end(),SCIM_PROP_WNN_CONVERSIONMODE);
+    it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_CONVERSIONMODE);
     if (it != m_proplist.end()) {
         if (auto_conversion) it->set_label(_("AUTO"));
         else  it->set_label(_("REN"));
@@ -384,7 +417,8 @@
             update_preedit_string(m_preeditor->getText(),m_preeditor->getAttributeList());
             update_preedit_caret(m_preeditor->getPos());
         }
-        if ((!m_conversion) && yosoku && m_convertor->isConnected() && (sType == "Wnn7") && (!auto_conversion)) {
+        if ((!m_conversion) && yosoku && m_convertor->isConnected() && (sType == "Wnn7") && 
+            (!auto_conversion) && (m_convertor->getName() == "Wnn")) {
             m_convList = m_convertor->getYosokuList(m_preeditor->getText());
             if (m_convList.count) {
                 m_lookup_table.clear();
@@ -524,6 +558,23 @@
         return(true);
     }
 
+    if (k_next_convertor.comp(key) || k_prev_convertor.comp(key)) {
+        for(unsigned int i = 0;i < convertors.size();i ++) {
+            if (convertors[i]->getPropertyName() == m_convertor->getPropertyName()) {
+                if (k_next_convertor.comp(key)) {
+                    if (i == (convertors.size() - 1)) i = 0;
+                    else i ++;
+                } else {
+                    if (i == 0) i = convertors.size() - 1;
+                    else i --;
+                }
+                changeConvertor(convertors[i]->getPropertyName());
+                updatePreEditor();
+                return(true);
+            }
+        }
+    }
+    
     if (k_auto_conversion.comp(key)) {
         auto_conversion ? auto_conversion = false : auto_conversion = true;
         updatePreEditor();
@@ -875,12 +926,17 @@
 
 void HonokaInstance::trigger_property (const String &property)
 {
-    String s = SCIM_PROP_WNN_INPUTMODE;
+    String s = HONOKA_PROP_INPUTMODE;
     if ((property.length() > s.length()) && (property.substr(0,s.length()) == s)) {
         changePreEditor(property.substr(s.length() + 1));
         updateProperty();
     }
-    s = SCIM_PROP_WNN_CONVERSIONMODE;
+    s = HONOKA_PROP_CONVERTOR;
+    if ((property.length() > s.length()) && (property.substr(0,s.length()) == s)) {
+        changeConvertor(property.substr(s.length() + 1));
+        updateProperty();
+    }
+    s = HONOKA_PROP_CONVERSIONMODE;
     if (property == s) {
         auto_conversion ? auto_conversion = false : auto_conversion = true;
         updatePreEditor();
diff --git a/honoka/src/honoka_imengine.h b/honoka/src/honoka_imengine.h
index 8c740be..10a78bb 100644
--- a/honoka/src/honoka_imengine.h
+++ b/honoka/src/honoka_imengine.h
@@ -117,6 +117,7 @@
     void updateProperty();
     void updateConversion();
     void changePreEditor(const String &name);
+    void changeConvertor(const String &name);
     void autoConversion();
 
 private:
@@ -144,6 +145,8 @@
         k_convert_half,         // Ⱦ���Ѵ�
         k_convert_wide,         // �����Ѵ�
         k_auto_conversion,      // �Ѵ��⡼�ɥȥ���
+        k_next_convertor,       // �����Ѵ����󥸥��
+        k_prev_convertor,       // �����Ѵ����󥸥��
 
         // for Wnn7
         k_conversion_ikeiji,    // �۷����Ѵ�
diff --git a/honoka/src/wnnconversion.cpp b/honoka/src/wnnconversion.cpp
index 21632a6..48d40a7 100644
--- a/honoka/src/wnnconversion.cpp
+++ b/honoka/src/wnnconversion.cpp
@@ -497,4 +497,10 @@
     return(String("Wnn"));
 }
 
+String WnnConversion::getPropertyName()
+{
+    return(String("Wnn"));
+}
+
+
 
diff --git a/honoka/src/wnnconversion.h b/honoka/src/wnnconversion.h
index cd12211..39114b2 100644
--- a/honoka/src/wnnconversion.h
+++ b/honoka/src/wnnconversion.h
@@ -74,6 +74,7 @@
     virtual void disconnect();
     virtual int getCaretPos();
     virtual String getName();
+    virtual String getPropertyName();
 
 
 protected: