说明：  本练习制作超链接事件的实例，执行实例后，将以只读方式显示命令行所传入的URL，本例显示在搜狐主页浏览的结果，并可点击进入链接。本实例的知识点有：显示HTML和超链接事件。
(This exercise produced a hyperlink event instance, after the implementation of an instance, will be read-only display the command line of the incoming URL, this example shows the results of Sohu Home Browse, and can click into the link. Knowledge points in this instance are: display HTML and hyperlinks events.)