function showMenu(object)
{
    if (document.getElementById && document.getElementById(object) != null)
         node = document.getElementById(object).style.visibility='visible';
    else if (document.layers && document.layers[object] != null)
        document.layers[object].visibility = 'visible';
    else if (document.all)
        document.all[object].style.visibility = 'visible';
}

function hideMenu(object)
{
    if (document.getElementById && document.getElementById(object) != null)
         node = document.getElementById(object).style.visibility='hidden';
    else if (document.layers && document.layers[object] != null)
        document.layers[object].visibility = 'hidden';
    else if (document.all)
         document.all[object].style.visibility = 'hidden';
}


  
  
 /* 

  var visibleVar="null";
  var layerRef="null";
  var styleSwitch="null";
  var visibleVar="null";

  function initMenu()
  {
    if (navigator.appName == "Netscape")
    {
      layerRef="document.layers";
      styleSwitch="";
      visibleVar="show";
    }
    else
    {
      layerRef="document.all";
      styleSwitch=".style";
      visibleVar="visible";
    }
  }

  function showMenu(layerName)
  {
  	initMenu();
    eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
  }

  function hideMenu(layerName)
  {
  	initMenu();
    eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
  }

  */