var objSubMenuShown;

function hideSubMenu()
{
  var oSubMenuSpacer = document.getElementById('subMenuSpacer');
  
  if (objSubMenuShown)
  {
    objSubMenuShown.style.display = "none";
    
    if (oSubMenuSpacer)
    {
      oSubMenuSpacer.style.display = "";
    }
  }
}

function toggleSubMenu(sSubMenuNumber)
{
var oSubMenu = document.getElementById('subMenu' + sSubMenuNumber);
var oSubMenuSpacer = document.getElementById('subMenuSpacer');

if (objSubMenuShown)
{
  objSubMenuShown.style.display = "none";
}

if (oSubMenu)
	{
	  if (oSubMenu.style.display == "none")
	  {
	    oSubMenu.style.display = "";
	    objSubMenuShown = oSubMenu;
            
            if (oSubMenuSpacer)
            {
              oSubMenuSpacer.style.display = "none";
            }

	  }
	}
}