var isMac		 	= navigator.appVersion.indexOf("Mac")!=-1 		? true : false;		// detect Mac OS
var isFireFox		= navigator.userAgent.indexOf("Firefox")!=-1 	? true : false;		// detect FireFox
var isFF 			= isFireFox;
var isSafari		= navigator.userAgent.indexOf("Safari")!=-1 	? true : false;		// detect Safari
var isNetscape		= navigator.appName == "Netscape"				? true : false;		// detect Netscape
var isOpera			= navigator.userAgent.indexOf("Opera")!=-1 		? true : false;		// detect Opera
var isIE			= document.all && !isOpera						? true : false;		// detect IE
var isMoz			= isFF || (isNetscape && !isSafari)				? true : false;		// this is set for any mozilla based browser