// Copyright Andrei Barborica, 2001

var NS=false;
var IE=false;
var GK=false;
var activeMenu='';

if (document.layers)
 NS=true;
else if (document.all)
 IE=true;
else if (document.getElementById)
 GK=true;

function HoverMenu(menu)
{
 if (activeMenu!='')
  if (menu!='BACK')
   RestoreMenu(activeMenu);
 activeMenu=menu;
 if (NS)
 {
  if (eval("document.menu"+menu))
   eval("document.menu"+menu+".visibility =  \'hidden\'");
  if (eval("document.mainWindow"+menu))
   eval("document.mainWindow"+menu+".visibility = \'visible\'");
  if (eval("document.topWindow"+menu))
   eval("document.topWindow"+menu+".visibility = \'visible\'");
  if (eval("document.bottomWindow"+menu))
   eval("document.bottomWindow"+menu+".visibility = \'visible\'");
// Last is the menu, to sit atop of all other layers...
  if (eval("document.menu"+menu+"Hover"))
   eval("document.menu"+menu+"Hover.visibility = \'visible\'");
 }
 else if (IE)
 {
  if (document.all('menu'+menu))
   document.all('menu'+menu).style.visibility='hidden';
  if (document.all('mainWindow'+menu))
   document.all('mainWindow'+menu).style.visibility='visible';
  if (document.all('topWindow'+menu))
   document.all('topWindow'+menu).style.visibility='visible';
  if (document.all('bottomWindow'+menu))
   document.all('bottomWindow'+menu).style.visibility='visible';
// Last is the menu, to sit atop of all other layers...
  if (document.all('menu'+menu+'Hover'))
   document.all('menu'+menu+"Hover").style.visibility='visible';
 }
 else if (GK)
 {
//   alert('Over '+menu+' !');
  if (document.getElementById('menu'+menu))
   document.getElementById('menu'+menu).style.visibility = 'hidden';
  if (document.getElementById('mainWindow'+menu))
   document.getElementById('mainWindow'+menu).style.visibility = 'visible';
  if (document.getElementById('topWindow'+menu))
   document.getElementById('topWindow'+menu).style.visibility = 'visible';
  if (document.getElementById('bottomWindow'+menu))
   document.getElementById('bottomWindow'+menu).style.visibility = 'visible';
// Last is the menu, to sit atop of all other layers...
  if (document.getElementById('menu'+menu+'Hover'))
   document.getElementById('menu'+menu+'Hover').style.visibility = 'visible';
 }
}

function RestoreMenu(menu)
{
 if (NS)
 {
  if (eval("document.menu"+menu))
   eval("document.menu"+menu+".visibility = \'visible\'");
  if (eval("document.menu"+menu+"Hover"))
   eval("document.menu"+menu+"Hover.visibility = \'hidden\'");
  if (eval("document.mainWindow"+menu))
   eval("document.mainWindow"+menu+".visibility = \'hidden\'");
  if (eval("document.topWindow"+menu))
   eval("document.topWindow"+menu+".visibility = \'hidden\'");
  if (eval("document.bottomWindow"+menu))
   eval("document.bottomWindow"+menu+".visibility = \'hidden\'");
 }
 else if (IE)
 {
  if (document.all('menu'+menu+'Hover'))
   document.all('menu'+menu).style.visibility='visible';
  if (document.all('menu'+menu+'Hover'))
   document.all('menu'+menu+"Hover").style.visibility='hidden';
  if (document.all('mainWindow'+menu))
   document.all('mainWindow'+menu).style.visibility='hidden';
  if (document.all('topWindow'+menu))
   document.all('topWindow'+menu).style.visibility='hidden';
  if (document.all('bottomWindow'+menu))
   document.all('bottomWindow'+menu).style.visibility='hidden';
 }
 else if (GK)
 {
  if (document.getElementById('menu'+menu))
   document.getElementById('menu'+menu).style.visibility = 'visible';
  if (document.getElementById('menu'+menu+'Hover'))
   document.getElementById('menu'+menu+'Hover').style.visibility = 'hidden';
  if (document.getElementById('mainWindow'+menu))
   document.getElementById('mainWindow'+menu).style.visibility = 'hidden';
  if (document.getElementById('topWindow'+menu))
   document.getElementById('topWindow'+menu).style.visibility = 'hidden';
  if (document.getElementById('bottomWindow'+menu))
   document.getElementById('bottomWindow'+menu).style.visibility = 'hidden';
 }
}

function HideMenu(menu)
{
 if (NS)
  eval("document.menu"+menu+".visibility = \'hidden\'");
 else if (IE)
  document.all.item('menu'+menu).style.visibility='hidden';
 else if (GK)
  document.getElementById('menu'+menu).style.visibility='hidden';
}