判断访问站点的浏览器类型

function browserinfo() {
    var Browser_Name = navigator.appName;
    var Browser_Version = parseFloat(navigator.appVersion);
    var Browser_Agent = navigator.userAgent;
    var Actual_Version="", Actual_Name="";
    var is_IE = (Browser_Name == "Microsoft Internet Explorer");// 判读是否为ie浏览器
    var is_NN = (Browser_Name == "Netscape");// 判断是否为netscape浏览器
    //var is_op = (Browser_Name == "Opera");// 判断是否为Opera浏览器
    if (is_NN) {
        // upper 5.0 need to be process,lower 5.0 return directly
        if (Browser_Version >= 5.0) {
            if (Browser_Agent.indexOf("Netscape") != -1) {
                var Split_Sign = Browser_Agent.lastIndexOf("/");
                var Bname = Browser_Agent.substring(0, Split_Sign);
                var Split_sign2 = Bname.lastIndexOf(" ");
                Actual_Version = Browser_Agent.substring(Split_Sign + 1,
                        Browser_Agent.length);
                Actual_Name = Bname.substring(Split_sign2 + 1, Bname.length);
            }
            if (Browser_Agent.indexOf("Firefox") != -1) {
                var Split_Sign = Browser_Agent.lastIndexOf("/");
                var Version = Browser_Agent.lastIndexOf(" ");
                Actual_Version = Browser_Agent.substring(Split_Sign + 1,
                        Browser_Agent.length);
                Actual_Name = Browser_Agent.substring(Version + 1, Split_Sign);
            }
            if (Browser_Agent.indexOf("Safari") != -1) {
                if (Browser_Agent.indexOf("Chrome") != -1) {
                    var Split_Sign = Browser_Agent.lastIndexOf(" ");
                    var Version = Browser_Agent.substring(0, Split_Sign);
                    ;
                    var Split_Sign2 = Version.lastIndexOf("/");
                    var Bname = Version.lastIndexOf(" ");
                    Actual_Version = Version.substring(Split_Sign2 + 1,
                            Version.length);
                    Actual_Name = Version.substring(Bname + 1, Split_Sign2);
                } else {
                    var Split_Sign = Browser_Agent.lastIndexOf("/");
                    var Version = Browser_Agent.substring(0, Split_Sign);
                    ;
                    var Split_Sign2 = Version.lastIndexOf("/");
                    var Bname = Browser_Agent.lastIndexOf(" ");
                    Actual_Version = Browser_Agent.substring(Split_Sign2 + 1,
                            Bname);
                    Actual_Name = Browser_Agent
                            .substring(Bname + 1, Split_Sign);
                }
            }

        } else {
            Actual_Version = Browser_Version;
            Actual_Name = Browser_Name;
        }
    } else if (is_IE) {
        var Version_Start = Browser_Agent.indexOf("MSIE");
        var Version_End = Browser_Agent.indexOf(";", Version_Start);
        Actual_Version = Browser_Agent.substring(Version_Start + 5, Version_End);
        Actual_Name = Browser_Name;
        if (Browser_Agent.indexOf("Maxthon") != -1
                || Browser_Agent.indexOf("MAXTHON") != -1) {
            var mv = Browser_Agent.lastIndexOf(" ");
            var mv1 = Browser_Agent.substring(mv, Browser_Agent.length - 1);
            mv1 = "遨游版本:" + mv1;
            Actual_Name += "(Maxthon)";
            Actual_Version += mv1;
        }
    } else if (Browser_Agent.indexOf("Opera") != -1) {
        Actual_Name = "Opera";
//        var tempstart = Browser_Agent.indexOf("Opera");
//        var tempend = Browser_Agent.length;
        Actual_Version = Browser_Version;
    } else {
        Actual_Name = "Unknown Navigator";
        Actual_Version = "Unknown Version";
    }
    navigator.Actual_Name = Actual_Name;
    navigator.Actual_Version = Actual_Version;

    this.Name = Actual_Name;
    this.Version = Actual_Version;
}

function jadgeBrowser()  
{  
   if(navigator.userAgent.indexOf("MSIE")>0) {  
        return "MSIE";  
   }  
   if(isFirefox=navigator.userAgent.indexOf("Chrome")>0){  
       return "Chrome";  
   }  
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){  
        return "Firefox";  
   }  
   if(isSafari=navigator.userAgent.indexOf("Safari")>0) {  
        return "Safari";  
   }   
   if(isCamino=navigator.userAgent.indexOf("Opera")>0){  
        return "Opera";  
   }  
   if(isMozilla=navigator.userAgent.indexOf("Sogou/")>0){  
        return "Sogou";  
   }  
   return "Unknown Browser";
    
}