//functions for navigation
var selectedMenu = null ;
var selectedSubMenu = null;

function showSub(obj)
{	
	// hide selected subnav
	
	if (selectedSubMenu != null) document.getElementById(selectedSubMenu).className = 'subnav';
  
	var subNav = obj + 'Lvl2';		
	document.getElementById(subNav).className = 'subnavShow';
	
	var nav = obj;
	document.getElementById(nav).className = 'selected';
}

function hideSub(obj)
{
	// hide active sub nav
	var subNav = obj + 'Lvl2';		
	document.getElementById(subNav).className = 'subnav';
	
	var nav = obj;
	document.getElementById(nav).className = 'normal';
	//show selected subnav
	//var subNav = obj + 'Lvl2';		
	//if (selectedSubMenu != null) document.getElementById(selectedSubMenu).className = 'subnavShow';		
		
}

/*function setSelected(menu,subMenu)
{


}*/