var browser = "unknown";
var version = 0;
var mac = (navigator.userAgent.indexOf("Mac") != -1);
var win = (navigator.userAgent.indexOf("Win") != -1);
if ((navigator.appName == "Microsoft Internet Explorer") && (navigator.userAgent.indexOf("Opera") == -1)) {
	browser = "MSIE";
	if (navigator.appVersion) {
		var i = navigator.appVersion.indexOf("MSIE");
		version = parseInt(navigator.appVersion.substring(i+5,i+8));
	}
} else if ((navigator.appName == "Netscape") && (navigator.userAgent.indexOf("Opera") == -1)) {
	browser = "Netscape";
	if (navigator.appVersion) {
		version = parseInt(navigator.appVersion.substring(0,3));
	}
} else if (navigator.userAgent.indexOf("Opera") != -1) {
	browser = "Opera";
	if (navigator.appVersion) {
		version = parseInt(navigator.appVersion.substring(0,3));
	}
}