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

	imgHome = new Image();
	imgHome.src = "/images/menu/Home.gif";
	imgHome_o = new Image();
	imgHome_o.src = "/images/menu/Home_o.gif";	
	
	imgCurrent = new Image();
	imgCurrent.src = "/images/menu/Current.gif";
	imgCurrent_o = new Image();
	imgCurrent_o.src = "/images/menu/Current_o.gif";
	
	imgFuture = new Image();
	imgFuture.src = "/images/menu/Future.gif";
	imgFuture_o = new Image();
	imgFuture_o.src = "/images/menu/Future_o.gif";	
	
	imgSponsors = new Image();
	imgSponsors.src = "/images/menu/Sponsors.gif";
	imgSponsors_o = new Image();
	imgSponsors_o.src = "/images/menu/Sponsors_o.gif";
	
	imgAbout = new Image();
	imgAbout.src = "/images/menu/About.gif";
	imgAbout_o = new Image();
	imgAbout_o.src = "/images/menu/About_o.gif";
	
}

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