var BrowserDetect = {
    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"
		        }
	        ]
};
BrowserDetect.init();