diff --git a/src/main/java/cit/PureATN/MultiNote/KeyEvent_on_MultiNote.java b/src/main/java/cit/PureATN/MultiNote/KeyEvent_on_MultiNote.java
index a49e8b5..cd16287 100644
--- a/src/main/java/cit/PureATN/MultiNote/KeyEvent_on_MultiNote.java
+++ b/src/main/java/cit/PureATN/MultiNote/KeyEvent_on_MultiNote.java
@@ -23,40 +23,50 @@
     }
 
     public void keyPressed(KeyEvent e) {
-        // System.out.println("keyCode=" + e.getKeyCode() + " keyChar [" + e.getKeyChar() + "]");
+        // System.out.println("keyCode=" + e.getKeyCode() + " keyChar [" +
+        // e.getKeyChar() + "]");
         if (e.getKeyCode() == KeyEvent.VK_ENTER) {
-            MultiNote mn = (MultiNote)Note.theapp;
+            MultiNote mn = (MultiNote) Note.theapp;
             mn.toggleExpandMode();
             mn.vlayout();
-            mn.iroduke();            
+            mn.iroduke();
         }
-        if (e.getKeyCode() == KeyEvent.VK_C) { //色付け & setMoveTargetToSelf 自己移動可能
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.iroduke();      
+        if (e.getKeyCode() == KeyEvent.VK_C) { // 色付け & setMoveTargetToSelf 自己移動可能
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.iroduke();
             mn.setMoveTargetToShortStroke(true); // マウスドラッグで筆記を移動可能にする
         }
-        if (e.getKeyCode() == KeyEvent.VK_D) { //色付け戻す & setMoveTargetToSelf 自己移動可能
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.irodukeOrig();      
+        if (e.getKeyCode() == KeyEvent.VK_D) { // 色付け戻す & setMoveTargetToSelf 自己移動可能
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.irodukeOrig();
             mn.setMoveTargetToShortStroke(true); // マウスドラッグで筆記を移動可能にする
         }
-        if (e.getKeyCode() == KeyEvent.VK_V) { //Visual Layout
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.setExpandMode(true);            
+        if (e.getKeyCode() == KeyEvent.VK_V) { // Visual Layout
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.setExpandMode(true);
         }
-        if (e.getKeyCode() == KeyEvent.VK_F) { //Fold
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.setExpandMode(false);            
+        if (e.getKeyCode() == KeyEvent.VK_F) { // Fold
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.setExpandMode(false);
         }
         if (e.getKeyCode() == KeyEvent.VK_R) {
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.showStat();            
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.showStat();
             mn.rotate();
             mn.vlayout();
         }
         if (e.getKeyCode() == KeyEvent.VK_DELETE) {
-            MultiNote mn = (MultiNote)Note.theapp;
-            mn.deleteAllStrokes();            
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.deleteAllStrokes();
+        }
+        if (e.getKeyCode() == KeyEvent.VK_UP) {
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.zoomToUpper();
+        }
+        if (e.getKeyCode() == KeyEvent.VK_DOWN) {
+            MultiNote mn = (MultiNote) Note.theapp;
+            mn.zoomToLower();
+            // menutoolbar.getButton("Full Screen").doClick();
         }
 
         if (e.getKeyCode() == KeyEvent.VK_Z) {
diff --git a/src/main/java/cit/PureATN/MultiNote/MultiNote.java b/src/main/java/cit/PureATN/MultiNote/MultiNote.java
index 92645f8..eb00840 100644
--- a/src/main/java/cit/PureATN/MultiNote/MultiNote.java
+++ b/src/main/java/cit/PureATN/MultiNote/MultiNote.java
@@ -178,25 +178,25 @@
 
         // Query q5 = new Query();
         // try {
-        //     q5.parse("select * from cit.PureATN.ShortStroke group by penid");
+        // q5.parse("select * from cit.PureATN.ShortStroke group by penid");
         // } catch (QueryParseException e) {
-        //     e.printStackTrace();
+        // e.printStackTrace();
         // }
         // QueryResults qr5 = null;
         // try {
-        //     qr5 = q5.execute(ass);
-        //     Map grpBys = qr5.getGroupByResults();
-        //     Iterator iter = grpBys.keySet().iterator();
-        //     while (iter.hasNext()) {
-        //         List key = (List) iter.next();
-        //         List res = (List) grpBys.get(key);
-        //         System.out.println(key.toString() + " " + res.size());
-        //     }
-        //     // for (ShortStroke ss : (List<ShortStroke>) qr5.getResults()) {
-        //     // System.out.println(ss.penid);
-        //     // }
+        // qr5 = q5.execute(ass);
+        // Map grpBys = qr5.getGroupByResults();
+        // Iterator iter = grpBys.keySet().iterator();
+        // while (iter.hasNext()) {
+        // List key = (List) iter.next();
+        // List res = (List) grpBys.get(key);
+        // System.out.println(key.toString() + " " + res.size());
+        // }
+        // // for (ShortStroke ss : (List<ShortStroke>) qr5.getResults()) {
+        // // System.out.println(ss.penid);
+        // // }
         // } catch (QueryExecutionException e) {
-        //     e.printStackTrace();
+        // e.printStackTrace();
         // }
 
     }
@@ -325,4 +325,19 @@
         rotation = (Math.PI / 2) * muki;
         isTate = !isTate;
     }
+
+    public void zoomToUpper() {
+        PTransformActivity ta2 = getCanvas().getCamera().animateViewToCenterBounds(
+                // getCanvas().getLayer().getFullBounds(),
+                new PBounds(0, 0, width, height / 2),
+                true, 1000);
+
+    }
+
+    public void zoomToLower() {
+        PTransformActivity ta2 = getCanvas().getCamera().animateViewToCenterBounds(
+                // getCanvas().getLayer().getFullBounds(),
+                new PBounds(0, height/2, width, height ),
+                true, 1000);
+    }
 }