// Netscape 3.0 compatibility test (for javascript image swapping)
			compat = false;
			if( parseInt( navigator.appVersion ) >= 3 ) { compat = true; }

			// cache images for quick swapping
			if( compat )
			{

			addon = new Image;(120,49)
			addon.src = "/images/ncfb1b.gif";
			addoff = new Image;(120,49)
			addoff.src = "/images/ncfb1.gif";
		
			homeon = new Image;(120,57)
			homeon.src = "/images/ncfb2b.gif";
			homeoff = new Image;(120,57)
			homeoff.src = "/images/ncfb2.gif";
	
			texton = new Image;(120,69)
			texton.src = "/images/ncfb4b.gif";
			textoff = new Image;(120,69)
			textoff.src = "/images/ncfb4.gif";

			tryon = new Image;(120,69)
			tryon.src = "/images/ncfb3b.gif";
			tryoff = new Image;(120,69)
			tryoff.src = "/images/ncfb3.gif";

			intron = new Image;(120,69)
			intron.src = "/images/ncfb5b.gif";	
			introff = new Image;(120,69)
			introff.src = "/images/ncfb5.gif";

			}

			// swap images using the cached images
			function glow(x, y)
			{
			if( compat ) { document.images[x].src=eval(y+'.src'); }

			}