To browse when you are disconnected from the Internet, change your Location document (or switch to a location that is disconnected, such as Island). Choose File, Preferences, Location Preferences from the menu to open the current Location document. Select the Internet Browser tab. From the Retrieve/open pages field, choose work offline and click OK. Then, click the Save & Close button on the Action bar.
With work offline selected, Notes will only retrieve pages from the Personal Web Navigator or Server Web Navigator databases. Notes won't retrieve pages from the Web. You will have to reconnect and change the setting in the Location document before you can retrieve new or updated pages.
If you switch to the Island (disconnected) location, you should use this setup so you can continue viewing web pages you've stored.