// 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 ) {

		l_about = new Image();
		l_about.src = ImageRoot + "/nav/l_about.gif";
		lo_about = new Image();
		lo_about.src = ImageRoot + "/nav/lo_about.gif";
		
		l_practice = new Image();
		l_practice.src = ImageRoot + "/nav/l_practice.gif";
		lo_practice = new Image();
		lo_practice.src = ImageRoot + "/nav/lo_practice.gif";
		
		l_lawyers = new Image();
		l_lawyers.src = ImageRoot + "/nav/l_lawyers.gif";
		lo_lawyers = new Image();
		lo_lawyers.src = ImageRoot + "/nav/lo_lawyers.gif";
		
		l_contact = new Image();
		l_contact.src = ImageRoot + "/nav/l_contact.gif";
		lo_contact = new Image();
		lo_contact.src = ImageRoot + "/nav/lo_contact.gif";
		
		l_news = new Image();
		l_news.src = ImageRoot + "/nav/l_news.gif";
		lo_news = new Image();
		lo_news.src = ImageRoot + "/nav/lo_news.gif";
		
		l_careers = new Image();
		l_careers.src = ImageRoot + "/nav/l_careers.gif";
		lo_careers = new Image();
		lo_careers.src = ImageRoot + "/nav/lo_careers.gif";
				
	}
	

// swap images using the cached images

function changeImg(x, y) {
	if( compat ) {
		document.images[x].src=eval(y+'.src'); 
		}
	}