if (document.images) 
		{
		img1on = new Image();
		img1on.src = "images/nav/home-over.gif";
		
		img2on = new Image();
		img2on.src = "images/nav/gallery-over.gif";
		
		img3on = new Image();
		img3on.src = "images/nav/packages-over.gif";
		
		img4on = new Image();
		img4on.src = "images/nav/biography-over.gif";
		
		img5on = new Image();
		img5on.src = "images/nav/contact-over.gif";
		
		img1off = new Image();
		img1off.src = "images/nav/home.gif";
		
		img2off = new Image();
		img2off.src = "images/nav/gallery.gif";
		
		img3off = new Image();
		img3off.src = "images/nav/packages.gif";
		
		img4off = new Image();
		img4off.src = "images/nav/biography.gif";
		
		img5off = new Image();
		img5off.src = "images/nav/contact.gif";
		
		}
	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");
		}