An interesting aspect of frames is revealed if you attempt to use the View Source option of Netscape Navigator. Only the code for the frameset appears-the code for the frames contained in it does not. This is one approach to provide some simple protection for your source code.
However, it only keeps novice users from seeing your code; experienced users can defeat this by loading the URLs referenced by the individual frames into a single browser window, and then using View, Source on that window.
Ananova 