Index: /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java	(revision 6437)
+++ /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java	(revision 6438)
@@ -49,5 +49,4 @@
     private Point iEndSelectionPoint;
 
-    // the SlippyMapChooserComponent
     private final SlippyMapBBoxChooser iSlippyMapChooser;
 
@@ -58,8 +57,8 @@
 
     /**
-     * Create a new OsmMapControl
+     * Constructs a new {@code SlippyMapControler}.
      */
     public SlippyMapControler(SlippyMapBBoxChooser navComp, JPanel contentPane, SizeButton sizeButton, SourceButton sourceButton) {
-        this.iSlippyMapChooser = navComp;
+        iSlippyMapChooser = navComp;
         iSlippyMapChooser.addMouseListener(this);
         iSlippyMapChooser.addMouseMotionListener(this);
@@ -99,8 +98,11 @@
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, InputEvent.ALT_DOWN_MASK, false), "ZOOM_IN");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_ADD, 0, false), "ZOOM_IN");
+        inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_PLUS, 0, false), "ZOOM_IN");
+        inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_EQUALS, InputEvent.SHIFT_DOWN_MASK, false), "ZOOM_IN");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, InputEvent.CTRL_DOWN_MASK, false), "ZOOM_OUT");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, InputEvent.META_DOWN_MASK, false), "ZOOM_OUT");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, InputEvent.ALT_DOWN_MASK, false), "ZOOM_OUT");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_SUBTRACT, 0, false), "ZOOM_OUT");
+        inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_MINUS, 0, false), "ZOOM_OUT");
 
         // action mapping