/* NAV DISPLAY FUNCTIONS   */
  var timerID = null;
  var timerOn = false;
  var timecount = 500;     // MILLISECONDS OF DELAY
  function show(name,num,total) {
    for (var i=1;i<=total;i++) {
      if (num==i) {
        document.getElementById(name+i).style.visibility = "visible";
      } else {
        document.getElementById(name+i).style.visibility = "hidden";
  }}}
  function time_stop(name,num,total) {
    if (timerOn) {
      clearTimeout(timerID);
      timerID = null;
      timerOn = false;
  }}
  function time_start(name,num,total) {
    if (timerOn == false) {
      timerID=setTimeout( "show('"+name+"',"+num+","+total+")" , timecount);
      timerOn = true;
  }}
  function stopTimer() { time_stop('subnav',0,3); }
  function startTimer() { time_start('subnav',0,3); }