# File lib/scrubyt/core/navigation/fetch_action.rb, line 140
    def self.store_host_name(doc_url)
      @@host_name = 'http://' + @@mechanize_doc.uri.to_s.scan(/http:\/\/(.+\/)+/).flatten[0] if @@current_doc_protocol == 'http'
      @@host_name = 'https://' + @@mechanize_doc.uri.to_s.scan(/https:\/\/(.+\/)+/).flatten[0] if @@current_doc_protocol == 'https'
      @@host_name = doc_url if @@host_name == nil
      @@host_name = @@host_name[0..-2] if @@host_name[-1].chr == '/'
      @@original_host_name ||= @@host_name
    end