function init()
	{
	image1 = new Image;
	image2 = new Image;
	image3 = new Image;
	
	image1.src = "img/navitem1.gif";
	image2.src = "img/navitem2.gif";
	image3.src = "img/navitem4.gif";
	}

function showNav(objectID)
	{
	document.getElementById(objectID).style.visibility = "visible"
	}
			
function hideNav(objectID1, objectID2)
	{
	document.getElementById(objectID1).style.visibility = "hidden"
	document.getElementById(objectID2).style.visibility = "hidden"
	}
	
function showCorrectNav(objectID)
	{
	document.getElementById(objectID).style.visibility = "visible"
	}
	
function showSubNavItem(objectID)
	{
	hideSubNavItem();
	document.getElementById(objectID).style.visibility = "visible";
	}
	
function hideSubNavItem()
	{
	document.getElementById('productnavitem1').style.visibility = "hidden";
	document.getElementById('productnavitem2').style.visibility = "hidden";
	document.getElementById('productnavitem3').style.visibility = "hidden";
	document.getElementById('productnavitem4').style.visibility = "hidden";
	document.getElementById('productnavitem5').style.visibility = "hidden";
	document.getElementById('productnavitem6').style.visibility = "hidden";
	document.getElementById('productnavitem7').style.visibility = "hidden";
	}