var xcol_cur_menu = null;
var xcol_cur_submenu = null;


function show(id)
	{

if (!isDOMcompliant()) 
	{
	return; 
	}
	
	var menu = document.getElementById("Menu" + id);
	var menus = document.getElementById("NavMenuList");
	var submenu = menus.getElementsByTagName("ul").item(id);

if (xcol_cur_submenu == null) 
	{
        submenu.style.visibility = "visible";    
	} 
else 
	{
	
        xcol_cur_submenu.style.visibility = "hidden";
        submenu.style.visibility = "visible";    
        
	}    
if (xcol_cur_menu == null) 
	{ 
	menu.style.backgroundColor = "#FFF";        
	menu.style.color = "#000";   
	} 

else 
	{      
	xcol_cur_menu.style.backgroundColor = "#000";       
	xcol_cur_menu.style.color = "#FFF";       
	menu.style.backgroundColor = "#FFF";       
	menu.style.color = "#000";    
	}  

	xcol_cur_menu = menu;  
	xcol_cur_submenu = submenu;
	last_id = id;
	}

function hide()
{

	xcol_cur_submenu.style.visibility = "hidden"; 
	
}

function isDOMcompliant()
{return document.getElementById && document.getElementsByTagName;}