var BrowserDetector =
{
    init: function() 
    {
        this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
        this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "an unknown version";
        this.OS = this.searchString(this.dataOS) || "an unknown OS";
    },
    searchString: function(data) 
    {
        for (var i = 0; i < data.length; i++) 
        {
            var dataString = data[i].string;
            var dataProp = data[i].prop;
            this.versionSearchString = data[i].versionSearch || data[i].identity;
            if (dataString) 
            {
                if (dataString.indexOf(data[i].subString) != -1) 
                {
                    return data[i].identity;
                }
            }
            else if (dataProp) 
            {
                return data[i].identity; 
            }
        }
    },
    searchVersion: function(dataString) 
    {
        var index = dataString.indexOf(this.versionSearchString);
        if (index == -1) return;
        return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
    },
    dataBrowser: [
                    {
                        string: navigator.userAgent,
                        subString: "Chrome",
                        identity: "Chrome"
                    },
                    { string: navigator.userAgent,
                        subString: "OmniWeb",
                        versionSearch: "OmniWeb/",
                        identity: "OmniWeb"
                    },
                    {
                        string: navigator.vendor,
                        subString: "Apple",
                        identity: "Safari",
                        versionSearch: "Version"
                    },
                    {
                        prop: window.opera,
                        identity: "Opera"
                    },
                    {
                        string: navigator.vendor,
                        subString: "iCab",
                        identity: "iCab"
                    },
                    {
                        string: navigator.vendor,
                        subString: "KDE",
                        identity: "Konqueror"
                    },
                    {
                        string: navigator.userAgent,
                        subString: "Firefox",
                        identity: "Firefox"
                    },
                    {
                        string: navigator.vendor,
                        subString: "Camino",
                        identity: "Camino"
                    },
                    {		// for newer Netscapes (6+)
                        string: navigator.userAgent,
                        subString: "Netscape",
                        identity: "Netscape"
                    },
                    {
                        string: navigator.userAgent,
                        subString: "MSIE",
                        identity: "Explorer",
                        versionSearch: "MSIE"
                    },
                    {
                        string: navigator.userAgent,
                        subString: "Gecko",
                        identity: "Mozilla",
                        versionSearch: "rv"
                    },
                    { 		// for older Netscapes (4-)
                        string: navigator.userAgent,
                        subString: "Mozilla",
                        identity: "Netscape",
                        versionSearch: "Mozilla"
                    }
                ],
    dataOS: [
                {
                    string: navigator.platform,
                    subString: "Win",
                    identity: "Windows"
                },
                {
                    string: navigator.platform,
                    subString: "Mac",
                    identity: "Mac"
                },
                {
                    string: navigator.userAgent,
                    subString: "iPhone",
                    identity: "iPhone/iPod"
                },
                {
                    string: navigator.platform,
                    subString: "Linux",
                    identity: "Linux"
                }
            ]
    };
BrowserDetector.init();