JS获取当前操作系统与浏览器名称

var getOSAndBrowser = function(){
		var os = navigator.platform;
		var userAgent = navigator.userAgent;
		var info  = "";
		var tempArray  = "";
		if(os.indexOf("Win") > -1){
			if(userAgent.indexOf("Windows NT 5.0") > -1){
				info += "Win2000";
			}else if(userAgent.indexOf("Windows NT 5.1") > -1){
				info += "WinXP";
			}else if(userAgent.indexOf("Windows NT 5.2") > -1){
				info += "Win2003";
			}else if(userAgent.indexOf("Windows NT 6.0") > -1){
				info += "WindowsVista";
			}else if(userAgent.indexOf("Windows NT 6.1") > -1 || userAgent.indexOf("Windows 7") > -1){
				info += "Win7";
			}else if(userAgent.indexOf("Windows 8") > -1){
				info += "Win8";
			}else{
				info += "Other";
			}
		}else if(os.indexOf("Mac") > -1){
			info += "Mac";
		}else if(os.indexOf("X11") > -1){
			info += "Unix";
		}else if(os.indexOf("Linux") > -1){
			info += "Linux";
		}else{
			info += "Other";
		}
		info += "/";
		if(/[Ff]irefox(\/\d+\.\d+)/.test(userAgent)){
			tempArray = /([Ff]irefox)\/(\d+\.\d+)/.exec(userAgent);
			info += tempArray[1] + tempArray[2];
		}else if(/MSIE \d+\.\d+/.test(userAgent)){
			tempArray = /MS(IE) (\d+\.\d+)/.exec(userAgent);
			info += tempArray[1] + tempArray[2];
		}else if(/[Cc]hrome\/\d+/.test(userAgent)){
			tempArray = /([Cc]hrome)\/(\d+)/.exec(userAgent);
			info += tempArray[1] + tempArray[2];
		}else if(/[Vv]ersion\/\d+\.\d+\.\d+(\.\d)* *[Ss]afari/.test(userAgent)){
			tempArray = /[Vv]ersion\/(\d+\.\d+\.\d+)(\.\d)* *([Ss]afari)/.exec(userAgent);
			info +=  tempArray[3] + tempArray[1];
		}else if(/[Oo]pera.+[Vv]ersion\/\d+\.\d+/.test(userAgent)){
			tempArray = /([Oo]pera).+[Vv]ersion\/(\d+)\.\d+/.exec(userAgent);
			info +=  tempArray[1] + tempArray[2];
		}else{
			info += "unknown";
		}
		return info;
	};