var t;
function showSubNav(Id){ 
	var a = document.getElementById(Id)
	a.style.visibility="visible";
	a.style.display="block";
	stopCount();
}

function hideSubNav(Id){ 
	var a = document.getElementById(Id)
	a.style.display="none";
	stopCount();
}

function timedCount(){
	t = setTimeout("hideIt()", 400);
}
function stopCount(){
	clearTimeout(t);
}
function hideIt(){
	var nav1 = document.getElementById('subnav');
  if(document.getElementById('subnav1'))
  {
    var nav2 = document.getElementById('subnav1');
    nav2.style.display = "block";
    nav1.style.display = "none";
  }	
	nav1.style.visibility = "hidden"; //hide element
	//nav1.style.display = "none"; //hide element
}

function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='visible')?'block':(v=='hidden')?'none':v; }
    obj.visibility=v; }
}