print HTML_FILE "\<TR\> \<TD width\=\"100\"\>\n" ;
          print HTML_FILE " \<A clasa=\"yellow\" style\=\"font\-size\=30px\; font\:normal Monotype Corsiva\" HREF\=\"..\/html\/${class}_decade_${prev_decade}_group_$previous_grp_num.html \"target\=\"_top\"\>Previous\<\/A\>\n";
          print HTML_FILE " \<TD align\=\"center\" width\=\"100\"\>\n";
	  # FIND NEXT PAGE NUMBER 
#          print "\n\nTOTAL DECADE NUM = $total_decade_number -- DECADE NUM $decade_number\n\n";

	  if ($decade_number == "$total_decade_number") {
#             print "\n\nTOTAL DECADE NUM = $total_decade_number -- ";
#             print "\n\nDECADE NUM = $decade_number\n\n";

	     $next_decade = "1" ;
	     $next_grp_num = "1"  ;
	  } else {
             $next_decade = $decade_number + 1 ;
	     $next_grp_num = ( $decade_number * 10 ) + 1 ;
          }

          print HTML_FILE " \<A class\=\"yellow\" style\=\"font\-size\=30px\; font\:normal Monotype Corsiva\" HREF\=\"..\/html\/${class}_decade_${next_decade}_group_$next_grp_num.html\" target\=\"_top\"\>Next\<\/A\>\n";
          print HTML_FILE "\<TR\>\n";