code: protected Content getNavHideLists(DocPath link) {
          Content noFramesContent = getHyperLink(link, contents.noFramesLabel, "", "_top");
          Content li = HtmlTree.LI(noFramesContent);
          return li;
      }
docs: Get "NO FRAMES" link, to switch to the non-frame version of the output.
  
  @param link File to be linked
  @return a content tree for the link