var browser = null;

if (navigator.appName == "Netscape") 
{
	if (navigator.userAgent.indexOf("Netscape") != -1) {
		browser = "Netscape";
	}
	if (navigator.userAgent.indexOf("Mozilla/4.7") != -1) {
		browser = "Netscape 4.7";
	}
	if (navigator.userAgent.indexOf("Firefox") != -1) {
		browser = "Firefox";
	}
	if (navigator.userAgent.indexOf("Safari") != -1) {
		browser = "Safari";
	}
}

if (navigator.appName == "Microsoft Internet Explorer") 
{
	browser = "MSIE";
}