gistfile1.js

function () {
    DF.namespace("DF.browserInformation");
    (DF.browserInformation = function () {
        var a, b, d, g = [{
            string: navigator.vendor,
            searchStr: "Apple",
            id: "Safari",
            versionStr: "Version",
            versMin: 1.3,
            os: "mac"
        },
        {
            string: navigator.userAgent,
            searchStr: "Firefox",
            id: "Firefox",
            versMin: 1.1
        },
        {
            string: navigator.userAgent,
            searchStr: "MSIE",
            id: "Explorer",
            versionStr: "MSIE",
            versMin: 6
        },
        {
            string: navigator.userAgent,
            searchStr: "Chrome",
            id: "Chrome",
            versMin: 99
        },
        {
            string: navigator.userAgent,
            searchStr: "Opera",
            id: "Opera",
            versMin: 99
        }],
            e = function () {
                for (var i =
                0; i < g.length; i++) {
                    var f = g[i].string;
                    if (f) if (f.indexOf(g[i].searchStr) !== -1) return g[i]
                }
            },
            h = function () {
                if (!a || a.os && a.os !== $.os.name) return -1;
                b = navigator.userAgent;
                var i = b.indexOf(a.versionStr || a.id),
                    f = null;
                if (i !== -1) if (f = parseFloat(b.substring(i + (a.versionStr || a.id).length + 1))) return f;
                b = navigator.appVersion;
                i = b.indexOf(a.versionStr || a.id);
                if (i !== -1) if (f = parseFloat(b.substring(i + (a.versionStr || a.id).length + 1))) return f;
                return -1
            },
            l = function () {
                return b
            },
            j = function () {
                return a
            },
            c = function () {
                return d
            };
        return {
            init: function () {
                a = e();
                b = h(a);
                d = a && b ? a.versMin <= b : false
            },
            getBrowser: function () {
                return j()
            },
            getVersion: function () {
                return l()
            },
            isSupported: function () {
                return c()
            },
            isIE: function () {
                return a.id === "Explorer"
            }
        }
    }()).init()
})();