var blnChangeVisibility = true;

function fn_DontChange()
{
 blnChangeVisibility = false;
}

function fn_DoChange()
{
 blnChangeVisibility = true;
}

function fn_ShowHideDetail(objLI)
{
 if(blnChangeVisibility)
 {
  var strDisplay = ((objLI.childNodes[1].style.display=="block") ? "none" : "block");
  objLI.childNodes[1].style.display = strDisplay;
  var strAClass = ((strDisplay=="none") ? "" : "Open");
  objLI.childNodes[0].className = strAClass;
 }
 blnChangeVisibility = true;
}

function setNavYear(strYear)
{
 if (strYear != "")
 {
  var objNavItem = eval(structure + "nav_" + strYear + closingb);
  fn_ShowHideDetail(objNavItem);
 }
}

var strYear;