old_contents: from __pyjamas__ import JS
  # TODO: implement safe
  def quote(s, safe=''):
      """
      This function is equivalent to urllib.quote().
  
      Example:
  
      >>> quote("hey")
      'hey'
      >>> quote("$%&/?/+ s")
      '%24%25%26%2F%3F%2F%2B%20s'
  
      """
      from __javascript__ import encodeURIComponent
      return encodeURIComponent(s)
  
  def urlencode(d):
      """
      Equivalent of urllib.urlencode().
  
      Examples:
      >>> urlencode({"a": 34, "bbb": "ccc"})
      'a=34&bbb=ccc'
      >>> urlencode({"a": 34, "bbb": "$%&/?/+ s"})
      'a=34&bbb=%24%25%26%2F%3F%2F%2B%20s'
      >>> urlencode({"a": 34})
      'a=34'
      >>> urlencode({})
      ''
  
      """
      s = ""
      for i, v in d.iteritems():
          s += "%s=%s&" % (i, quote(str(v)))
      if s != "":
          s = s[:-1]
      return s
  
new_contents: from __pyjamas__ import JS
  # TODO: implement safe
  def quote(s, safe=''):
      """
      This function is equivalent to urllib.quote().
  
      Example:
  
      >>> quote("hey")
      'hey'
      >>> quote("$%&/?/+ s")
      '%24%25%26%2F%3F%2F%2B%20s'
  
      """
      from __javascript__ import encodeURIComponent
      return encodeURIComponent(s)
  
  def unquote_plus(s):
      """
      This function is equivalent to urllib.unquote_plus
  
      Example:
  
      >>> unquote("hey")
      'hey'
      >>> unquote('%24%25%26%2F%3F%2F%2B%20s')
      "$%&/?/+ s"
  
      """
      from __javascript__ import decodeURIComponent
      return decodeURIComponent(s)
  
  def urlencode(d):
      """
      Equivalent of urllib.urlencode().
  
      Examples:
      >>> urlencode({"a": 34, "bbb": "ccc"})
      'a=34&bbb=ccc'
      >>> urlencode({"a": 34, "bbb": "$%&/?/+ s"})
      'a=34&bbb=%24%25%26%2F%3F%2F%2B%20s'
      >>> urlencode({"a": 34})
      'a=34'
      >>> urlencode({})
      ''
  
      """
      s = ""
      for i, v in d.iteritems():
          s += "%s=%s&" % (i, quote(str(v)))
      if s != "":
          s = s[:-1]
      return s
  
subject: add urllib.unquote_plus