More keyboard handling
======================

Surf

  # http://www.extjs.com/blog/2008/09/23/keyboard-handling/
  # http://www.extjs.com/forum/showthread.php?t=60709
  # http://www.extjs.com/deploy/dev/docs/?class=Ext.Window&member=defaultButton
  # http://www.extjs.com/deploy/dev/docs/?class=Ext.Window&member=focus