aaoff = new Image();
	aaoff.src = "images/nav/n1_n.jpg";
	aaon = new Image();
	aaon.src = "images/nav/n1_o.jpg";
	
	baoff = new Image();
	baoff.src = "images/nav/n2_n.jpg";
	baon = new Image();
	baon.src = "images/nav/n2_o.jpg";
	
      	caoff = new Image();
	caoff.src = "images/nav/n3_n.jpg";
	caon = new Image();
	caon.src = "images/nav/n3_o.jpg";
	
	daoff = new Image();
	daoff.src = "images/nav/n4_n.jpg";
	daon = new Image();
	daon.src = "images/nav/n4_o.jpg";
	
	eaoff = new Image();
	eaoff.src = "images/nav/n5_n.jpg";
	eaon = new Image();
	eaon.src = "images/nav/n5_o.jpg";

	faoff = new Image();
	faoff.src = "images/nav/n6_n.jpg";
	faon = new Image();
	faon.src = "images/nav/n6_o.jpg";

	
function imgOn(imgName)
	{if (document.images){document[imgName].src = eval(imgName + "on.src");}}

function imgOff(imgName) 
	{if (document.images){document[imgName].src = eval(imgName + "off.src");}}