/files/piwik/2.1.0/piwik.js

/*!
 * Piwik - Web Analytics
 *
 * JavaScript tracking client
 *
 * @link http://piwik.org
 * @source https://github.com/piwik/piwik/blob/master/js/piwik.js
 * @license http://piwik.org/free-software/bsd/ Simplified BSD (also in js/LICENSE.txt)
 */

// Refer to README.md for build instructions when minifying this file for distribution.

/*
 * Browser [In]Compatibility
 * - minimum required ECMAScript: ECMA-262, edition 3
 *
 * Incompatible with these (and earlier) versions of:
 * - IE4 - try..catch and for..in introduced in IE5
 * - IE5 - named anonymous functions, array.push, encodeURIComponent, decodeURIComponent, and getElementsByTagName introduced in IE5.5
 * - Firefox 1.0 and Netscape 8.x - FF1.5 adds array.indexOf, among other things
 * - Mozilla 1.7 and Netscape 6.x-7.x
 * - Netscape 4.8
 * - Opera 6 - Error object (and Presto) introduced in Opera 7
 * - Opera 7
 */

/************************************************************
 * JSON - public domain reference implementation by Douglas Crockford
 * @version 2012-10-08
 * @link http://www.JSON.org/js.html
 ************************************************************/
/*jslint evil: true, regexp: false, bitwise: true*/
/*global JSON2:true */
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", "\\", apply,
    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
    lastIndex, length, parse, prototype, push, replace, sort, slice, stringify,
    test, toJSON, toString, valueOf,
    objectToJSON
*/

// Create a JSON object only if one does not already exist. We create the
// methods in a closure to avoid creating global variables.

if (typeof JSON2 !== 'object') {
    JSON2 = {};
}

(function () {
    'use strict';

    function f(n) {
        // Format integers to have at least two digits.
        return n < 10 ? '0' + n : n;
    }

    function objectToJSON(value, key) {
        var objectType = Object.prototype.toString.apply(value);

        if (objectType === '[object Date]') {
            return isFinite(value.valueOf())
                ?  value.getUTCFullYear()     + '-' +
                    f(value.getUTCMonth() + 1) + '-' +
                    f(value.getUTCDate())      + 'T' +
                    f(value.getUTCHours())     + ':' +
                    f(value.getUTCMinutes())   + ':' +
                    f(value.getUTCSeconds())   + 'Z'
                : null;
        }

        if (objectType === '[object String]' ||
                objectType === '[object Number]' ||
                objectType === '[object Boolean]') {
            return value.valueOf();
        }

        if (objectType !== '[object Array]' &&
                typeof value.toJSON === 'function') {
            return value.toJSON(key);
        }

        return value;
    }

    var cx = new RegExp('[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]', 'g'),
    // hack: workaround Snort false positive (sid 8443)
        pattern = '\\\\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]',
        escapable = new RegExp('[' + pattern, 'g'),
        gap,
        indent,
        meta = {    // table of character substitutions
            '\b': '\\b',
            '\t': '\\t',
            '\n': '\\n',
            '\f': '\\f',
            '\r': '\\r',
            '"' : '\\"',
            '\\': '\\\\'
        },
        rep;

    function quote(string) {

// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.

        escapable.lastIndex = 0;

        return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
            var c = meta[a];

            return typeof c === 'string'
                ? c
                : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        }) + '"' : '"' + string + '"';
    }

    function str(key, holder) {

// Produce a string from holder[key].

        var i,          // The loop counter.
            k,          // The member key.
            v,          // The member value.
            length,
            mind = gap,
            partial,
            value = holder[key];

// If the value has a toJSON method, call it to obtain a replacement value.

        if (value && typeof value === 'object') {
            value = objectToJSON(value, key);
        }

// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.

        if (typeof rep === 'function') {
            value = rep.call(holder, key, value);
        }

// What happens next depends on the value's type.

        switch (typeof value) {
        case 'string':
            return quote(value);

        case 'number':

// JSON numbers must be finite. Encode non-finite numbers as null.

            return isFinite(value) ? String(value) : 'null';

        case 'boolean':
        case 'null':

// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.

            return String(value);

// If the type is 'object', we might be dealing with an object or an array or
// null.

        case 'object':

// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.

            if (!value) {
                return 'null';
            }

// Make an array to hold the partial results of stringifying this object value.

            gap += indent;
            partial = [];

// Is the value an array?

            if (Object.prototype.toString.apply(value) === '[object Array]') {

// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.

                length = value.length;
                for (i = 0; i < length; i += 1) {
                    partial[i] = str(i, value) || 'null';
                }

// Join all of the elements together, separated with commas, and wrap them in
// brackets.

                v = partial.length === 0
                    ? '[]'
                    : gap
                    ?  '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
                    : '[' + partial.join(',') + ']';
                gap = mind;

                return v;
            }

// If the replacer is an array, use it to select the members to be stringified.

            if (rep && typeof rep === 'object') {
                length = rep.length;
                for (i = 0; i < length; i += 1) {
                    if (typeof rep[i] === 'string') {
                        k = rep[i];
                        v = str(k, value);

                        if (v) {
                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
                        }
                    }
                }
            } else {

// Otherwise, iterate through all of the keys in the object.

                for (k in value) {
                    if (Object.prototype.hasOwnProperty.call(value, k)) {
                        v = str(k, value);

                        if (v) {
                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
                        }
                    }
                }
            }

// Join all of the member texts together, separated with commas,
// and wrap them in braces.

            v = partial.length === 0
                ? '{}'
                : gap
                ?  '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
                : '{' + partial.join(',') + '}';
            gap = mind;

            return v;
        }
    }

// If the JSON object does not yet have a stringify method, give it one.

    if (typeof JSON2.stringify !== 'function') {
        JSON2.stringify = function (value, replacer, space) {

// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.

            var i;
            gap = '';
            indent = '';

// If the space parameter is a number, make an indent string containing that
// many spaces.

            if (typeof space === 'number') {
                for (i = 0; i < space; i += 1) {
                    indent += ' ';
                }

// If the space parameter is a string, it will be used as the indent string.

            } else if (typeof space === 'string') {
                indent = space;
            }

// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.

            rep = replacer;

            if (replacer && typeof replacer !== 'function' &&
                    (typeof replacer !== 'object' ||
                    typeof replacer.length !== 'number')) {
                throw new Error('JSON2.stringify');
            }

// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.

            return str('', {'': value});
        };
    }

// If the JSON object does not yet have a parse method, give it one.

    if (typeof JSON2.parse !== 'function') {
        JSON2.parse = function (text, reviver) {

// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.

            var j;

            function walk(holder, key) {

// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.

                var k, v, value = holder[key];

                if (value && typeof value === 'object') {
                    for (k in value) {
                        if (Object.prototype.hasOwnProperty.call(value, k)) {
                            v = walk(value, k);

                            if (v !== undefined) {
                                value[k] = v;
                            } else {
                                delete value[k];
                            }
                        }
                    }
                }

                return reviver.call(holder, key, value);
            }

// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.

            text = String(text);
            cx.lastIndex = 0;

            if (cx.test(text)) {
                text = text.replace(cx, function (a) {
                    return '\\u' +
                        ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                });
            }

// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.

// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.

            if ((new RegExp('^[\\],:{}\\s]*$'))
                    .test(text.replace(new RegExp('\\\\(?:["\\\\/bfnrt]|u[0-9a-fA-F]{4})', 'g'), '@')
                        .replace(new RegExp('"[^"\\\\\n\r]*"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?', 'g'), ']')
                        .replace(new RegExp('(?:^|:|,)(?:\\s*\\[)+', 'g'), ''))) {

// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.

                j = eval('(' + text + ')');

// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.

                return typeof reviver === 'function'
                    ?  walk({'': j}, '')
                    : j;
            }

// If the text is not JSON parseable, then a SyntaxError is thrown.

            throw new SyntaxError('JSON2.parse');
        };
    }
}());
/************************************************************
 * end JSON
 ************************************************************/

/*jslint browser:true, plusplus:true, vars:true, nomen:true, evil:true */
/*global window */
/*global unescape */
/*global ActiveXObject */
/*members encodeURIComponent, decodeURIComponent, getElementsByTagName,
    shift, unshift,
    createElement, appendChild, characterSet, charset,
    addEventListener, attachEvent, removeEventListener, detachEvent, disableCookies,
    cookie, domain, readyState, documentElement, doScroll, title, text,
    location, top, document, referrer, parent, links, href, protocol, name, GearsFactory,
    performance, mozPerformance, msPerformance, webkitPerformance, timing, requestStart,
    responseEnd, event, which, button, srcElement, type, target,
    parentNode, tagName, hostname, className,
    userAgent, cookieEnabled, platform, mimeTypes, enabledPlugin, javaEnabled,
    XMLHttpRequest, ActiveXObject, open, setRequestHeader, onreadystatechange, send, readyState, status,
    getTime, getTimeAlias, setTime, toGMTString, getHours, getMinutes, getSeconds,
    toLowerCase, toUpperCase, charAt, indexOf, lastIndexOf, split, slice,
    onload, src,
    round, random,
    exec,
    res, width, height, devicePixelRatio,
    pdf, qt, realp, wma, dir, fla, java, gears, ag,
    hook, getHook, getVisitorId, getVisitorInfo, setTrackerUrl, appendToTrackingUrl, setSiteId,
    getAttributionInfo, getAttributionCampaignName, getAttributionCampaignKeyword,
    getAttributionReferrerTimestamp, getAttributionReferrerUrl,
    setCustomData, getCustomData,
    setCustomVariable, getCustomVariable, deleteCustomVariable,
    setDownloadExtensions, addDownloadExtensions,
    setDomains, setIgnoreClasses, setRequestMethod,
    setReferrerUrl, setCustomUrl, setAPIUrl, setDocumentTitle,
    setDownloadClasses, setLinkClasses,
    setCampaignNameKey, setCampaignKeywordKey,
    discardHashTag,
    setCookieNamePrefix, setCookieDomain, setCookiePath, setVisitorIdCookie,
    setVisitorCookieTimeout, setSessionCookieTimeout, setReferralCookieTimeout,
    setConversionAttributionFirstReferrer,
    disablePerformanceTracking, setGenerationTimeMs,
    doNotTrack, setDoNotTrack, msDoNotTrack,
    addListener, enableLinkTracking, setLinkTrackingTimer,
    setHeartBeatTimer, killFrame, redirectFile, setCountPreRendered,
    trackGoal, trackLink, trackPageView, trackSiteSearch, trackEvent,
    setEcommerceView, addEcommerceItem, trackEcommerceOrder, trackEcommerceCartUpdate,
    deleteCookies
 */
/*global _paq:true */
/*members push */
/*global Piwik:true */
/*members addPlugin, getTracker, getAsyncTracker */
/*global Piwik_Overlay_Client */
/*members initialize */
/*global define */
/*members amd */

// asynchronous tracker (or proxy)
if (typeof _paq !== 'object') {
    _paq = [];
}

// Piwik singleton and namespace
if (typeof Piwik !== 'object') {
    Piwik = (function () {
        'use strict';

        /************************************************************
         * Private data
         ************************************************************/

        var expireDateTime,

            /* plugins */
            plugins = {},

            /* alias frequently used globals for added minification */
            documentAlias = document,
            navigatorAlias = navigator,
            screenAlias = screen,
            windowAlias = window,

            /* performance timing */
            performanceAlias = windowAlias.performance || windowAlias.mozPerformance || windowAlias.msPerformance || windowAlias.webkitPerformance,

            /* DOM Ready */
            hasLoaded = false,
            registeredOnLoadHandlers = [],

            /* encode */
            encodeWrapper = windowAlias.encodeURIComponent,

            /* decode */
            decodeWrapper = windowAlias.decodeURIComponent,

            /* urldecode */
            urldecode = unescape,

            /* asynchronous tracker */
            asyncTracker,

            /* iterator */
            iterator,

            /* local Piwik */
            Piwik;

        /************************************************************
         * Private methods
         ************************************************************/

        /*
         * Is property defined?
         */
        function isDefined(property) {
            // workaround https://github.com/douglascrockford/JSLint/commit/24f63ada2f9d7ad65afc90e6d949f631935c2480
            var propertyType = typeof property;

            return propertyType !== 'undefined';
        }

        /*
         * Is property a function?
         */
        function isFunction(property) {
            return typeof property === 'function';
        }

        /*
         * Is property an object?
         *
         * @return bool Returns true if property is null, an Object, or subclass of Object (i.e., an instanceof String, Date, etc.)
         */
        function isObject(property) {
            return typeof property === 'object';
        }

        /*
         * Is property a string?
         */
        function isString(property) {
            return typeof property === 'string' || property instanceof String;
        }

        /*
         * apply wrapper
         *
         * @param array parameterArray An array comprising either:
         *      [ 'methodName', optional_parameters ]
         * or:
         *      [ functionObject, optional_parameters ]
         */
        function apply() {
            var i, f, parameterArray;

            for (i = 0; i < arguments.length; i += 1) {
                parameterArray = arguments[i];
                f = parameterArray.shift();

                if (isString(f)) {
                    asyncTracker[f].apply(asyncTracker, parameterArray);
                } else {
                    f.apply(asyncTracker, parameterArray);
                }
            }
        }

        /*
         * Cross-browser helper function to add event handler
         */
        function addEventListener(element, eventType, eventHandler, useCapture) {
            if (element.addEventListener) {
                element.addEventListener(eventType, eventHandler, useCapture);

                return true;
            }

            if (element.attachEvent) {
                return element.attachEvent('on' + eventType, eventHandler);
            }

            element['on' + eventType] = eventHandler;
        }

        /*
         * Call plugin hook methods
         */
        function executePluginMethod(methodName, callback) {
            var result = '',
                i,
                pluginMethod;

            for (i in plugins) {
                if (Object.prototype.hasOwnProperty.call(plugins, i)) {
                    pluginMethod = plugins[i][methodName];

                    if (isFunction(pluginMethod)) {
                        result += pluginMethod(callback);
                    }
                }
            }

            return result;
        }

        /*
         * Handle beforeunload event
         *
         * Subject to Safari's "Runaway JavaScript Timer" and
         * Chrome V8 extension that terminates JS that exhibits
         * "slow unload", i.e., calling getTime() > 1000 times
         */
        function beforeUnloadHandler() {
            var now;

            executePluginMethod('unload');

            /*
             * Delay/pause (blocks UI)
             */
            if (expireDateTime) {
                // the things we do for backwards compatibility...
                // in ECMA-262 5th ed., we could simply use:
                //     while (Date.now() < expireDateTime) { }
                do {
                    now = new Date();
                } while (now.getTimeAlias() < expireDateTime);
            }
        }

        /*
         * Handler for onload event
         */
        function loadHandler() {
            var i;

            if (!hasLoaded) {
                hasLoaded = true;
                executePluginMethod('load');
                for (i = 0; i < registeredOnLoadHandlers.length; i++) {
                    registeredOnLoadHandlers[i]();
                }
            }

            return true;
        }

        /*
         * Add onload or DOM ready handler
         */
        function addReadyListener() {
            var _timer;

            if (documentAlias.addEventListener) {
                addEventListener(documentAlias, 'DOMContentLoaded', function ready() {
                    documentAlias.removeEventListener('DOMContentLoaded', ready, false);
                    loadHandler();
                });
            } else if (documentAlias.attachEvent) {
                documentAlias.attachEvent('onreadystatechange', function ready() {
                    if (documentAlias.readyState === 'complete') {
                        documentAlias.detachEvent('onreadystatechange', ready);
                        loadHandler();
                    }
                });

                if (documentAlias.documentElement.doScroll && windowAlias === windowAlias.top) {
                    (function ready() {
                        if (!hasLoaded) {
                            try {
                                documentAlias.documentElement.doScroll('left');
                            } catch (error) {
                                setTimeout(ready, 0);

                                return;
                            }
                            loadHandler();
                        }
                    }());
                }
            }

            // sniff for older WebKit versions
            if ((new RegExp('WebKit')).test(navigatorAlias.userAgent)) {
                _timer = setInterval(function () {
                    if (hasLoaded || /loaded|complete/.test(documentAlias.readyState)) {
                        clearInterval(_timer);
                        loadHandler();
                    }
                }, 10);
            }

            // fallback
            addEventListener(windowAlias, 'load', loadHandler, false);
        }

        /*
         * Load JavaScript file (asynchronously)
         */
        function loadScript(src, onLoad) {
            var script = documentAlias.createElement('script');

            script.type = 'text/javascript';
            script.src = src;

            if (script.readyState) {
                script.onreadystatechange = function () {
                    var state = this.readyState;

                    if (state === 'loaded' || state === 'complete') {
                        script.onreadystatechange = null;
                        onLoad();
                    }
                };
            } else {
                script.onload = onLoad;
            }

            documentAlias.getElementsByTagName('head')[0].appendChild(script);
        }

        /*
         * Get page referrer
         */
        function getReferrer() {
            var referrer = '';

            try {
                referrer = windowAlias.top.document.referrer;
            } catch (e) {
                if (windowAlias.parent) {
                    try {
                        referrer = windowAlias.parent.document.referrer;
                    } catch (e2) {
                        referrer = '';
                    }
                }
            }

            if (referrer === '') {
                referrer = documentAlias.referrer;
            }

            return referrer;
        }

        /*
         * Extract scheme/protocol from URL
         */
        function getProtocolScheme(url) {
            var e = new RegExp('^([a-z]+):'),
                matches = e.exec(url);

            return matches ? matches[1] : null;
        }

        /*
         * Extract hostname from URL
         */
        function getHostName(url) {
            // scheme : // [username [: password] @] hostame [: port] [/ [path] [? query] [# fragment]]
            var e = new RegExp('^(?:(?:https?|ftp):)/*(?:[^@]+@)?([^:/#]+)'),
                matches = e.exec(url);

            return matches ? matches[1] : url;
        }

        /*
         * Extract parameter from URL
         */
        function getParameter(url, name) {
            var regexSearch = "[\\?&#]" + name + "=([^&#]*)";
            var regex = new RegExp(regexSearch);
            var results = regex.exec(url);
            return results ? decodeWrapper(results[1]) : '';
        }

        /*
         * UTF-8 encoding
         */
        function utf8_encode(argString) {
            return urldecode(encodeWrapper(argString));
        }

        /************************************************************
         * sha1
         * - based on sha1 from http://phpjs.org/functions/sha1:512 (MIT / GPL v2)
         ************************************************************/

        function sha1(str) {
            // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
            // + namespaced by: Michael White (http://getsprink.com)
            // +      input by: Brett Zamir (http://brett-zamir.me)
            // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
            // +   jslinted by: Anthon Pang (http://piwik.org)

            var
                rotate_left = function (n, s) {
                    return (n << s) | (n >>> (32 - s));
                },

                cvt_hex = function (val) {
                    var strout = '',
                        i,
                        v;

                    for (i = 7; i >= 0; i--) {
                        v = (val >>> (i * 4)) & 0x0f;
                        strout += v.toString(16);
                    }

                    return strout;
                },

                blockstart,
                i,
                j,
                W = [],
                H0 = 0x67452301,
                H1 = 0xEFCDAB89,
                H2 = 0x98BADCFE,
                H3 = 0x10325476,
                H4 = 0xC3D2E1F0,
                A,
                B,
                C,
                D,
                E,
                temp,
                str_len,
                word_array = [];

            str = utf8_encode(str);
            str_len = str.length;

            for (i = 0; i < str_len - 3; i += 4) {
                j = str.charCodeAt(i) << 24 | str.charCodeAt(i + 1) << 16 |
                    str.charCodeAt(i + 2) << 8 | str.charCodeAt(i + 3);
                word_array.push(j);
            }

            switch (str_len & 3) {
            case 0:
                i = 0x080000000;
                break;
            case 1:
                i = str.charCodeAt(str_len - 1) << 24 | 0x0800000;
                break;
            case 2:
                i = str.charCodeAt(str_len - 2) << 24 | str.charCodeAt(str_len - 1) << 16 | 0x08000;
                break;
            case 3:
                i = str.charCodeAt(str_len - 3) << 24 | str.charCodeAt(str_len - 2) << 16 | str.charCodeAt(str_len - 1) << 8 | 0x80;
                break;
            }

            word_array.push(i);

            while ((word_array.length & 15) !== 14) {
                word_array.push(0);
            }

            word_array.push(str_len >>> 29);
            word_array.push((str_len << 3) & 0x0ffffffff);

            for (blockstart = 0; blockstart < word_array.length; blockstart += 16) {
                for (i = 0; i < 16; i++) {
                    W[i] = word_array[blockstart + i];
                }

                for (i = 16; i <= 79; i++) {
                    W[i] = rotate_left(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
                }

                A = H0;
                B = H1;
                C = H2;
                D = H3;
                E = H4;

                for (i = 0; i <= 19; i++) {
                    temp = (rotate_left(A, 5) + ((B & C) | (~B & D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
                    E = D;
                    D = C;
                    C = rotate_left(B, 30);
                    B = A;
                    A = temp;
                }

                for (i = 20; i <= 39; i++) {
                    temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
                    E = D;
                    D = C;
                    C = rotate_left(B, 30);
                    B = A;
                    A = temp;
                }

                for (i = 40; i <= 59; i++) {
                    temp = (rotate_left(A, 5) + ((B & C) | (B & D) | (C & D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
                    E = D;
                    D = C;
                    C = rotate_left(B, 30);
                    B = A;
                    A = temp;
                }

                for (i = 60; i <= 79; i++) {
                    temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
                    E = D;
                    D = C;
                    C = rotate_left(B, 30);
                    B = A;
                    A = temp;
                }

                H0 = (H0 + A) & 0x0ffffffff;
                H1 = (H1 + B) & 0x0ffffffff;
                H2 = (H2 + C) & 0x0ffffffff;
                H3 = (H3 + D) & 0x0ffffffff;
                H4 = (H4 + E) & 0x0ffffffff;
            }

            temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);

            return temp.toLowerCase();
        }

        /************************************************************
         * end sha1
         ************************************************************/

        /*
         * Fix-up URL when page rendered from search engine cache or translated page
         */
        function urlFixup(hostName, href, referrer) {
            if (hostName === 'translate.googleusercontent.com') {       // Google
                if (referrer === '') {
                    referrer = href;
                }

                href = getParameter(href, 'u');
                hostName = getHostName(href);
            } else if (hostName === 'cc.bingj.com' ||                   // Bing
                    hostName === 'webcache.googleusercontent.com' ||    // Google
                    hostName.slice(0, 5) === '74.6.') {                 // Yahoo (via Inktomi 74.6.0.0/16)
                href = documentAlias.links[0].href;
                hostName = getHostName(href);
            }

            return [hostName, href, referrer];
        }

        /*
         * Fix-up domain
         */
        function domainFixup(domain) {
            var dl = domain.length;

            // remove trailing '.'
            if (domain.charAt(--dl) === '.') {
                domain = domain.slice(0, dl);
            }

            // remove leading '*'
            if (domain.slice(0, 2) === '*.') {
                domain = domain.slice(1);
            }

            return domain;
        }

        /*
         * Title fixup
         */
        function titleFixup(title) {
            title = title && title.text ? title.text : title;

            if (!isString(title)) {
                var tmp = documentAlias.getElementsByTagName('title');

                if (tmp && isDefined(tmp[0])) {
                    title = tmp[0].text;
                }
            }

            return title;
        }

        /************************************************************
         * Page Overlay
         ************************************************************/

        function getPiwikUrlForOverlay(trackerUrl, apiUrl) {
            if (apiUrl) {
                return apiUrl;
            }

            if (trackerUrl.slice(-9) === 'piwik.php') {
                trackerUrl = trackerUrl.slice(0, trackerUrl.length - 9);
            }

            return trackerUrl;
        }

        /*
         * Check whether this is a page overlay session
         *
         * @return boolean
         *
         * {@internal side-effect: modifies window.name }}
         */
        function isOverlaySession(configTrackerSiteId) {
            var windowName = 'Piwik_Overlay';

            // check whether we were redirected from the piwik overlay plugin
            var referrerRegExp = new RegExp('index\\.php\\?module=Overlay&action=startOverlaySession'
                               + '&idsite=([0-9]+)&period=([^&]+)&date=([^&]+)$');

            var match = referrerRegExp.exec(documentAlias.referrer);

            if (match) {
                // check idsite
                var idsite = match[1];

                if (idsite !== String(configTrackerSiteId)) {
                    return false;
                }

                // store overlay session info in window name
                var period = match[2],
                    date = match[3];

                windowAlias.name = windowName + '###' + period + '###' + date;
            }

            // retrieve and check data from window name
            var windowNameParts = windowAlias.name.split('###');

            return windowNameParts.length === 3 && windowNameParts[0] === windowName;
        }

        /*
         * Inject the script needed for page overlay
         */
        function injectOverlayScripts(configTrackerUrl, configApiUrl, configTrackerSiteId) {
            var windowNameParts = windowAlias.name.split('###'),
                period = windowNameParts[1],
                date = windowNameParts[2],
                piwikUrl = getPiwikUrlForOverlay(configTrackerUrl, configApiUrl);

            loadScript(
                piwikUrl + 'plugins/Overlay/client/client.js?v=1',
                function () {
                    Piwik_Overlay_Client.initialize(piwikUrl, configTrackerSiteId, period, date);
                }
            );
        }

        /************************************************************
         * End Page Overlay
         ************************************************************/

        /*
         * Piwik Tracker class
         *
         * trackerUrl and trackerSiteId are optional arguments to the constructor
         *
         * See: Tracker.setTrackerUrl() and Tracker.setSiteId()
         */
        function Tracker(trackerUrl, siteId) {

            /************************************************************
             * Private members
             ************************************************************/

            var
/*<DEBUG>*/
                /*
                 * registered test hooks
                 */
                registeredHooks = {},
/*</DEBUG>*/

                // Current URL and Referrer URL
                locationArray = urlFixup(documentAlias.domain, windowAlias.location.href, getReferrer()),
                domainAlias = domainFixup(locationArray[0]),
                locationHrefAlias = locationArray[1],
                configReferrerUrl = locationArray[2],

                // Request method (GET or POST)
                configRequestMethod = 'GET',

                // Tracker URL
                configTrackerUrl = trackerUrl || '',

                // API URL (only set if it differs from the Tracker URL)
                configApiUrl = '',

                // This string is appended to the Tracker URL Request (eg. to send data that is not handled by the existin setters/getters)
                configAppendToTrackingUrl = '',

                // Site ID
                configTrackerSiteId = siteId || '',

                // Document URL
                configCustomUrl,

                // Document title
                configTitle = documentAlias.title,

                // Extensions to be treated as download links
                configDownloadExtensions = '7z|aac|apk|ar[cj]|as[fx]|avi|bin|csv|deb|dmg|docx?|exe|flv|gif|gz|gzip|hqx|jar|jpe?g|js|mp(2|3|4|e?g)|mov(ie)?|ms[ip]|od[bfgpst]|og[gv]|pdf|phps|png|pptx?|qtm?|ra[mr]?|rpm|sea|sit|tar|t?bz2?|tgz|torrent|txt|wav|wm[av]|wpd||xlsx?|xml|z|zip',

                // Hosts or alias(es) to not treat as outlinks
                configHostsAlias = [domainAlias],

                // HTML anchor element classes to not track
                configIgnoreClasses = [],

                // HTML anchor element classes to treat as downloads
                configDownloadClasses = [],

                // HTML anchor element classes to treat at outlinks
                configLinkClasses = [],

                // Maximum delay to wait for web bug image to be fetched (in milliseconds)
                configTrackerPause = 500,

                // Minimum visit time after initial page view (in milliseconds)
                configMinimumVisitTime,

                // Recurring heart beat after initial ping (in milliseconds)
                configHeartBeatTimer,

                // Disallow hash tags in URL
                configDiscardHashTag,

                // Custom data
                configCustomData,

                // Campaign names
                configCampaignNameParameters = [ 'pk_campaign', 'piwik_campaign', 'utm_campaign', 'utm_source', 'utm_medium' ],

                // Campaign keywords
                configCampaignKeywordParameters = [ 'pk_kwd', 'piwik_kwd', 'utm_term' ],

                // First-party cookie name prefix
                configCookieNamePrefix = '_pk_',

                // First-party cookie domain
                // User agent defaults to origin hostname
                configCookieDomain,

                // First-party cookie path
                // Default is user agent defined.
                configCookiePath,

                // Cookies are disabled
                configCookiesDisabled = false,

                // Do Not Track
                configDoNotTrack,

                // Count sites which are pre-rendered
                configCountPreRendered,

                // Do we attribute the conversion to the first referrer or the most recent referrer?
                configConversionAttributionFirstReferrer,

                // Life of the visitor cookie (in milliseconds)
                configVisitorCookieTimeout = 63072000000, // 2 years

                // Life of the session cookie (in milliseconds)
                configSessionCookieTimeout = 1800000, // 30 minutes

                // Life of the referral cookie (in milliseconds)
                configReferralCookieTimeout = 15768000000, // 6 months

                // Is performance tracking enabled
                configPerformanceTrackingEnabled = true,

                // Generation time set from the server
                configPerformanceGenerationTime = 0,

                // Custom Variables read from cookie, scope "visit"
                customVariables = false,

                // Custom Variables, scope "page"
                customVariablesPage = {},

                // Custom Variables, scope "event"
                customVariablesEvent = {},

                // Custom Variables names and values are each truncated before being sent in the request or recorded in the cookie
                customVariableMaximumLength = 200,

                // Ecommerce items
                ecommerceItems = {},

                // Browser features via client-side data collection
                browserFeatures = {},

                // Guard against installing the link tracker more than once per Tracker instance
                linkTrackingInstalled = false,

                // Guard against installing the activity tracker more than once per Tracker instance
                activityTrackingInstalled = false,

                // Last activity timestamp
                lastActivityTime,

                // Internal state of the pseudo click handler
                lastButton,
                lastTarget,

                // Hash function
                hash = sha1,

                // Domain hash value
                domainHash,

                // Visitor UUID
                visitorUUID;


            /*
             * Set cookie value
             */
            function setCookie(cookieName, value, msToExpire, path, domain, secure) {
                if (configCookiesDisabled) {
                    return;
                }

                var expiryDate;

                // relative time to expire in milliseconds
                if (msToExpire) {
                    expiryDate = new Date();
                    expiryDate.setTime(expiryDate.getTime() + msToExpire);
                }

                documentAlias.cookie = cookieName + '=' + encodeWrapper(value) +
                    (msToExpire ? ';expires=' + expiryDate.toGMTString() : '') +
                    ';path=' + (path || '/') +
                    (domain ? ';domain=' + domain : '') +
                    (secure ? ';secure' : '');
            }

            /*
             * Get cookie value
             */
            function getCookie(cookieName) {
                if (configCookiesDisabled) {
                    return 0;
                }

                var cookiePattern = new RegExp('(^|;)[ ]*' + cookieName + '=([^;]*)'),
                    cookieMatch = cookiePattern.exec(documentAlias.cookie);

                return cookieMatch ? decodeWrapper(cookieMatch[2]) : 0;
            }

            /*
             * Removes hash tag from the URL
             *
             * URLs are purified before being recorded in the cookie,
             * or before being sent as GET parameters
             */
            function purify(url) {
                var targetPattern;

                if (configDiscardHashTag) {
                    targetPattern = new RegExp('#.*');

                    return url.replace(targetPattern, '');
                }

                return url;
            }

            /*
             * Resolve relative reference
             *
             * Note: not as described in rfc3986 section 5.2
             */
            function resolveRelativeReference(baseUrl, url) {
                var protocol = getProtocolScheme(url),
                    i;

                if (protocol) {
                    return url;
                }

                if (url.slice(0, 1) === '/') {
                    return getProtocolScheme(baseUrl) + '://' + getHostName(baseUrl) + url;
                }

                baseUrl = purify(baseUrl);

                i = baseUrl.indexOf('?');
                if (i >= 0) {
                    baseUrl = baseUrl.slice(0, i);
                }

                i = baseUrl.lastIndexOf('/');
                if (i !== baseUrl.length - 1) {
                    baseUrl = baseUrl.slice(0, i + 1);
                }

                return baseUrl + url;
            }

            /*
             * Is the host local? (i.e., not an outlink)
             */
            function isSiteHostName(hostName) {
                var i,
                    alias,
                    offset;

                for (i = 0; i < configHostsAlias.length; i++) {
                    alias = domainFixup(configHostsAlias[i].toLowerCase());

                    if (hostName === alias) {
                        return true;
                    }

                    if (alias.slice(0, 1) === '.') {
                        if (hostName === alias.slice(1)) {
                            return true;
                        }

                        offset = hostName.length - alias.length;

                        if ((offset > 0) && (hostName.slice(offset) === alias)) {
                            return true;
                        }
                    }
                }

                return false;
            }

            /*
             * Send image request to Piwik server using GET.
             * The infamous web bug (or beacon) is a transparent, single pixel (1x1) image
             */
            function getImage(request) {
                var image = new Image(1, 1);

                image.onload = function () {
                    iterator = 0; // To avoid JSLint warning of empty block
                };
                image.src = configTrackerUrl + (configTrackerUrl.indexOf('?') < 0 ? '?' : '&') + request;
            }

            /*
             * POST request to Piwik server using XMLHttpRequest.
             */
            function sendXmlHttpRequest(request) {
                try {
                    // we use the progid Microsoft.XMLHTTP because
                    // IE5.5 included MSXML 2.5; the progid MSXML2.XMLHTTP
                    // is pinned to MSXML2.XMLHTTP.3.0
                    var xhr = windowAlias.XMLHttpRequest
                        ? new windowAlias.XMLHttpRequest()
                        : windowAlias.ActiveXObject
                        ? new ActiveXObject('Microsoft.XMLHTTP')
                        : null;

                    xhr.open('POST', configTrackerUrl, true);

                    // fallback on error
                    xhr.onreadystatechange = function () {
                        if (this.readyState === 4 && this.status !== 200) {
                            getImage(request);
                        }
                    };

                    // see XMLHttpRequest Level 2 spec, section 4.7.2 for invalid headers
                    // @link http://dvcs.w3.org/hg/xhr/raw-file/tip/Overview.html
                    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');

                    xhr.send(request);
                } catch (e) {
                    // fallback
                    getImage(request);
                }
            }

            /*
             * Send request
             */
            function sendRequest(request, delay) {
                var now = new Date();

                if (!configDoNotTrack) {
                    if (configRequestMethod === 'POST') {
                        sendXmlHttpRequest(request);
                    } else {
                        getImage(request);
                    }

                    expireDateTime = now.getTime() + delay;
                }
            }

            /*
             * Get cookie name with prefix and domain hash
             */
            function getCookieName(baseName) {
                // NOTE: If the cookie name is changed, we must also update the PiwikTracker.php which
                // will attempt to discover first party cookies. eg. See the PHP Client method getVisitorId()
                return configCookieNamePrefix + baseName + '.' + configTrackerSiteId + '.' + domainHash;
            }

            /*
             * Does browser have cookies enabled (for this site)?
             */
            function hasCookies() {
                if (configCookiesDisabled) {
                    return '0';
                }

                if (!isDefined(navigatorAlias.cookieEnabled)) {
                    var testCookieName = getCookieName('testcookie');
                    setCookie(testCookieName, '1');

                    return getCookie(testCookieName) === '1' ? '1' : '0';
                }

                return navigatorAlias.cookieEnabled ? '1' : '0';
            }

            /*
             * Update domain hash
             */
            function updateDomainHash() {
                domainHash = hash((configCookieDomain || domainAlias) + (configCookiePath || '/')).slice(0, 4); // 4 hexits = 16 bits
            }

            /*
             * Inits the custom variables object
             */
            function getCustomVariablesFromCookie() {
                var cookieName = getCookieName('cvar'),
                    cookie = getCookie(cookieName);

                if (cookie.length) {
                    cookie = JSON2.parse(cookie);

                    if (isObject(cookie)) {
                        return cookie;
                    }
                }

                return {};
            }

            /*
             * Lazy loads the custom variables from the cookie, only once during this page view
             */
            function loadCustomVariables() {
                if (customVariables === false) {
                    customVariables = getCustomVariablesFromCookie();
                }
            }

            /*
             * Process all "activity" events.
             * For performance, this function must have low overhead.
             */
            function activityHandler() {
                var now = new Date();

                lastActivityTime = now.getTime();
            }

            /*
             * Sets the Visitor ID cookie: either the first time loadVisitorIdCookie is called
             * or when there is a new visit or a new page view
             */
            function setVisitorIdCookie(uuid, createTs, visitCount, nowTs, lastVisitTs, lastEcommerceOrderTs) {
                setCookie(getCookieName('id'), uuid + '.' + createTs + '.' + visitCount + '.'