var browser,version, platform;

browser=navigator.appName;
version=navigator.appVersion;

if (browser.indexOf("Microsoft") >= 0) {
	browser="ie";
	version=parseFloat(version.substr(version.indexOf("MSIE")+5, 3));
}
else if (browser.indexOf("Netscape") >= 0) {
	browser="ns";
	version=parseFloat(version);
} else {
	browser="unknown";
	version=0;
}
	
if (navigator.userAgent.indexOf("Win") > -1)
	platform="win";
else if(navigator.userAgent.indexOf("Mac") > -1)
	platform="mac";