created a list of user agents for the user to select to mimic a connection from a specific browser. The list box gets the ua from a list. A dictionary, containing the ua definition, has been created as a separate module. The urllib2.request gets the second argument of the ua parameter dictionary from the ua_dict dictionary
module containing a dictionary of user agents and a list of user agent names to use as list box labels and as keys for the user agent dictionary within the program