function linktable() {
   output = "";
   output += "<TABLE BORDER BGCOLOR=teal WIDTH=100%>";
   for (i=1; i<11; i++) {
      output += "<TD ALIGN=CENTER ";
      if (i == lesson) output += "BGCOLOR='BBF8FB' ";
      else output += "BGCOLOR='6583E9' ";
      output += "WIDTH=10%><A HREF='Lecon"+i+"f.html' "
      output += "TARGET='_top'><B>"+i+"</B></A>";
   }
   output += "</TABLE>"
   frames[0].document.writeln(output);
}

function showtitle() {
   output = "<H2>Leçon "+lesson+": "+title+"</H2>";
   frames[0].document.writeln(output);
}