function showPanel(HREF) {
if (document.all) {   // It's MSIE ...and Opera ... not Netscape 6 either...
    document.all['top_chunk' + chunk[HREF].link].style.visibility = "visible";
    document.all['bot_chunk' + chunk[HREF].link].style.visibility = "visible";
    }
}

function hidePanel(HREF) {
if (document.all) {   // It's MSIE ...and Opera ... not Netscape 6 either...
    document.all['top_chunk' + chunk[HREF].link].style.visibility = "hidden";
    document.all['bot_chunk' + chunk[HREF].link].style.visibility = "hidden";
            }
}

function write_toc(page_loc) {
  if (document.all) {   // It's MSIE ...and Opera ... not Netscape 6 either...
    document.writeln('<div>');
    for (i in chunk) {
      document.write ('<div class="chap_title" style="visibility:hidden;position:absolute;" id="' + page_loc + 'chunk' + chunk[i].link + '">' + chunk[i].title + '</div>');
    }
    document.writeln('<br /></div>');
  }

  document.writeln('<div class="chap_list">');
  for (i in chunk) {
    if (chunk[i].link != undefined) {
      if (document.URL.indexOf(i) > 0) {
          document.write('<font color="red"><u>'  + chunk[i].link + '</u>&nbsp;&nbsp;</font>');
      } else {
          document.write('<a class="dhtml" href="' + i + 
          '" onmouseover="javascript:showPanel(\'' + i + '\')" onmouseout="javascript:hidePanel(\'' + i + 
          '\')">');
          document.write(chunk[i].link);
          document.write('</a>&nbsp;&nbsp;');
      }
    } //end undefined
  }

  document.writeln('</div>');
}