agent = navigator.userAgent;
browserVer = 2;
if (agent.substring(0,7) == "Mozilla") {
 if (parseInt(agent.substring(8,9)) >= 3) {
		browserVer = 1;
	}
}

if (browserVer == 1) {
	home=new Image();
	home.src="media/navbar/home.gif";
	homeActive=new Image();
	homeActive.src="media/navbar/home-active.gif"
	
	lobby=new Image();
	lobby.src="media/navbar/lobby.gif";
	lobbyActive=new Image();
	lobbyActive.src="media/navbar/lobby-active.gif"
	
	briefing=new Image();
	briefing.src="media/navbar/briefing.gif";
	briefingActive=new Image();
	briefingActive.src="media/navbar/briefing-active.gif"
	
	debriefing=new Image();
	debriefing.src="media/navbar/debriefing.gif";
	debriefingActive=new Image();
	debriefingActive.src="media/navbar/debriefing-active.gif"
	
	advanced=new Image();
	advanced.src="media/navbar/advanced.gif";
	advancedActive=new Image();
	advancedActive.src="media/navbar/advanced-active.gif"
	
	authors=new Image();
	authors.src="media/navbar/authors.gif";
	authorsActive=new Image();
	authorsActive.src="media/navbar/authors-active.gif"
	
	explore=new Image();
	explore.src="media/navbar/explore.gif";
	exploreActive=new Image();
	exploreActive.src="media/navbar/explore-active.gif"
	
	utilities=new Image();
	utilities.src="media/navbar/utilities.gif";
	utilitiesActive=new Image();
	utilitiesActive.src="media/navbar/utilities-active.gif"
}