// <![CDATA[
  function showMenu(id)
  {
	document.getElementById(id).style.visibility = "visible";
  }

  function hideMenu(id)
  {
	document.getElementById(id).style.visibility = "hidden";
  }

  function hideAll()
  {
	var elements = document.getElementsByTagName("div");

	for (var i = 0; i < elements.length; i++) {
	  if (elements.item(i).className == "popup") {
		hideMenu(elements.item(i).id);
	  }
	}
  }

  var timerId = null;
  var timecount = 250;  // milleseconds

  function startHideAllTimer()
  {
	if (!timerId) {
	  timerId = setTimeout("hideAll()", timecount);
	}
  }

  function stopHideAllTimer()
  {
	if (timerId) {
	  clearTimeout(timerId);
	  timerId = null;
	}
  }
// ]]>