not
part of HTML 3.2 standard and some browsers do not handle them properly, rendering them inaccessible. Search engines also have problems indexing frame sets properly. Thus, it is only appropriate that this set of "bad web pages" is presented in frames. However, if your browser doesn't support frames, then follow
this link
and use your
Back
button (or equivalent) to return to the menu page. Unfortunately, frames-based pages rarely provide alternate navigation links for non-frames browsers and this set is no exception.