Ruby+watir高手进！！uninitialized constant Watir::NonControlElement (NameError)

[softtechnology]

我想实现页面上tree 的点击动作，可是页面看到的标签是
<FONT style="CURSOR: hand" id=id52 class=nodeSel title=外拨管理 target="_self" src="img/base.gif">外拨管理</FONT>
而<font>标签 watir不能识别，所以使用自定义标签。

但是一执行 ruby脚本，提示：
F:/Ruby/autoInspect.rb:13:in `<module:Watir>': uninitialized constant Watir::NonControlElement (NameError)
from F:/Ruby/autoInspect.rb:12:in `<main>'
[Finished in 0.7s]


代码如下:
#encoding: utf-8
#require "rubygems"
require 'watir'
require 'watir-webdriver'
#require 'watir-classic'
require "yaml"
require "rexml/document"
include REXML



module Watir
class Font < NonControlElement
TAG = 'font'
end
module Container
def font(how, what)
return Font.new(self, how, what)
end
end
end



谁能帮忙看一看？？？？？？？？？？？？是不是需要额外引入什么命名空间啊

[panghuhu250]

这儿（https://groups.google.com/forum/#!msg/watir-general/kBAGiswpeq4/kqcEfHFaLeEJ） 说，在前面加上

require 'watir/ie'

上面网页里的解释（by Bret）：The reason for this is as follows. The "watir" library (what you require 'watir' to get), used to be the Watir::IE class and supporting code. Now that library is called "watir/ie". There is now a new library called "watir" (contained in the commonwatir gem, actually) that loads the correct library. It will load 'watir/ie' if (1) you use Browser.new and your browser option is 'ie' or (2) if you make any reference to Watir::IE. Bret

[softtechnology]

不可以呢，还是要谢谢你啊 :/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- watir/ie (LoadError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' from F:/Ruby/autoInspect.rb:8:in `<main>' [Finished in 6.6s with exit code 1]