// ---------------------------------------------------------------------------------
// NAVIGATION MENU - DROP DOWN LIST
// designed and developed by Digital Valley (www.digitalvalley.co.za)
// Copyright (c) Digital Valley
// ---------------------------------------------------------------------------------

// Variables
var oNav;
var oNav_Sub;

function Nav_Init(oNavigationId)
{
	// Stores the navigation
	oNav = document.getElementById(oNavigationId);
	
	// Stores all the menus inside the nav
	oNav_Sub = oNav.getElementsByTagName("div");
	
	// Collapses / hides all the sub menus
	Nav_SetDefaults();
}

function Nav_ShowHide(oNav_Sub_Selected)
{
	// Stores the desired sub menu to show
	oNav_Sub_Selected = document.getElementById(oNav_Sub_Selected);
	
	// Toggles the visibility of the sub menus
	if (oNav_Sub_Selected.style.display == "none")
	{
		// Collapses / hides all the sub menus
		Nav_SetDefaults();
		
		// Shows the selected sub menu
		oNav_Sub_Selected.style.display = "block";
	}
	else if (oNav_Sub_Selected.style.display != "none")
	{
		oNav_Sub_Selected.style.display = "none";	
	}
}

function Nav_SetDefaults()
{
	// Collapses / hides all the sub menus
	for (var i = 0; i < oNav_Sub.length; i++)
	{
		// Makes sure the elements are sub menus (identified by class name)		
		if (oNav_Sub[i].className == "nav_sub")
		{
			oNav_Sub[i].style.display = "none";
			
			var browser=navigator.appName;
			if (browser == "Opera")
			{
				//oNav_Sub[i].style.cssFloat = "left"; // Fixes anomalies in Opera
				oNav_Sub[i].style.height = "1px"; // Fixes anomalies in Opera
			}// end if
		}
	}
}