var agent = navigator.userAgent;
var appver = navigator.appVersion;
var nav = navigator.appName;
var plf = null;
var ver = null;

if(agent.indexOf('Mac') != -1){
	plf = "Mac";
}else if(agent.indexOf('Win') != -1){
	plf = "Win";
}else{
	plf = "other";
}

	if(agent.indexOf('MSIE') == -1){
		ver = appver.charAt(0);
		if(nav == "Netscape"){
			nav = "NN";
		}
	}else{
		ver = agent.charAt(agent.indexOf('MSIE') + 5);
		nav = "MSIE";
	}