var mainNavIndex = 0;

function setMainNav(index)
{
	mainNavIndex = index;
	
	for (var i=0;i<=4;i++)
	{
		if (i==mainNavIndex)
		{
			document.getElementById(('mainnav'+i)).className = "mainnav selected";
		}
		else
		{
			document.getElementById(('mainnav'+i)).className = "mainnav";
		}
	}

}

function showSecondaryNav(index)
{
	for (var i=0;i<=4;i++)
	{
		if (i!=mainNavIndex)
		{
			document.getElementById(('mainnav'+i)).className = "mainnav";
		}
		
		if (i==index)
		{
			document.getElementById(('secondarynav'+i)).style.display = "block";
			
			// ensure that the "unique benefits sub-menu is aligned with the main menu item
			if (index==2)
			{
				document.getElementById('secondarynavarea').style.paddingLeft = '100px';
			}
			else
			{
				document.getElementById('secondarynavarea').style.paddingLeft = '10px';
			}
			
			if (i!=mainNavIndex)
			{
				document.getElementById(('mainnav'+i)).className = "mainnav selected";
			}
		}
		else
		{
			document.getElementById(('secondarynav'+i)).style.display = "none";
		}

	}
}