function nav()
{
  document.write("<p")
  document.write("><a href=\"/index.php\">Site Root</a")
  document.write("> - <a href=\"../index.htm\">Home</a")
  document.write("> - <a href=\"../01hello/01hello.htm\">Hello</a")
  document.write("> - <a href=\"../02textIO/02textIO.htm\">Text IO</a")
  document.write("> - <a href=\"../03maths/03maths.htm\">Arithmetic</a")
  document.write("> - <a href=\"../04if/04if.htm\">IF</a")
  document.write("> - <a href=\"../05graphics/05graphics.htm\">Graphics</a")
  document.write("> - <a href=\"../06ForLoop/06ForLoop.htm\">For</a")
  document.write("> - <a href=\"../07WhileLoop/07WhileLoop.htm\">While</a")
  document.write("> - <a href=\"../08MouseTracking/08MouseTracking.htm\">Mouse</a")
  document.write("> - <a href=\"../09RunningTotal/09RunningTotal.htm\">Total</a")
  document.write("> - <a href=\"../10KeyPress/10KeyPress.htm\">Key Press</a")
  document.write("> - <a href=\"../11Submit/11submit.htm\">Database</a")
  document.write("></p>")
}