piwik.js

/*!
 * Piwik - Web Analytics
 *
 * JavaScript tracking client
 *
 * @link http://piwik.org
 * @source http://dev.piwik.org/trac/browser/trunk/js/piwik.js
 * @license http://www.opensource.org/licenses/bsd-license.php Simplified BSD
 */

// Refer to README 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, and decodeURIComponent 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
 * @link http://www.JSON.org/json2.js
 ************************************************************/
/*jslint evil: true, regexp: false, bitwise: true */
/*global JSON2 */
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON2, "\\", apply,
    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
    lastIndex, length, parse, prototype, push, replace, 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 (!this.JSON2) {
	this.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('JSON.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('JSON.parse');
        };
    }
}());
/************************************************************
 * end JSON
 ************************************************************/

/*jslint browser:true, plusplus:true, vars:true, nomen:true, evil:true */
/*global window */
/*global unescape */
/*global ActiveXObject */
/*global _paq:true */
/*members encodeURIComponent, decodeURIComponent,
	shift, unshift,
	addEventListener, attachEvent, removeEventListener, detachEvent,
	cookie, domain, readyState, documentElement, doScroll, title,
	location, top, document, referrer, parent, links, href, protocol, GearsFactory,
	event, which, button, srcElement, type, target,
	parentNode, tagName, hostname, className,
	userAgent, cookieEnabled, platform, mimeTypes, enabledPlugin, javaEnabled,
	XDomainRequest, XMLHttpRequest, ActiveXObject, open, setRequestHeader, onreadystatechange, setRequestHeader, send, readyState, status,
	getTime, setTime, toGMTString, getHours, getMinutes, getSeconds,
	toLowerCase, charAt, indexOf, lastIndexOf, split, slice,
	onLoad, src,
	round, random,
	exec,
	res, width, height,
	pdf, qt, realp, wma, dir, fla, java, gears, ag,
	hook, getHook, getVisitorId, getVisitorInfo, setTrackerUrl, setSiteId,
	getAttributionInfo, getAttributionCampaignName, getAttributionCampaignKeyword,
	getAttributionReferrerTimestamp, getAttributionReferrerUrl,
	setCustomData, getCustomData,
	setCustomVariable, getCustomVariable, deleteCustomVariable,
	setDownloadExtensions, addDownloadExtensions,
	setDomains, setIgnoreClasses, setRequestMethod,
	setReferrerUrl, setCustomUrl, setDocumentTitle,
	setDownloadClasses, setLinkClasses,
	setCampaignNameKey, setCampaignKeywordKey,
	discardHashTag,
	setCookieNamePrefix, setCookieDomain, setCookiePath, setVisitorIdCookie,
	setVisitorCookieTimeout, setSessionCookieTimeout, setReferralCookieTimeout,
	setConversionAttributionFirstReferrer,
	doNotTrack, setDoNotTrack, msDoNotTrack,
	addListener, enableLinkTracking, setLinkTrackingTimer,
	setHeartBeatTimer, killFrame, redirectFile, setCountPreRendered,
	trackGoal, trackLink, trackPageView, setEcommerceView, addEcommerceItem, trackEcommerceOrder, trackEcommerceCartUpdate,
	addPlugin, getTracker, getAsyncTracker
*/
var
	// asynchronous tracker (or proxy)
	_paq = _paq || [],

	// Piwik singleton and namespace
	Piwik =	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,

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

			/* encode */
			encodeWrapper = windowAlias.encodeURIComponent,

			/* decode */
			decodeWrapper = windowAlias.decodeURIComponent,

			/* urldecode */
			urldecode = unescape,

			/* asynchronous tracker */
			asyncTracker,

			/* iterator */
			i;

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

		/*
		 * Is property defined?
		 */
		function isDefined(property) {
			return typeof property !== '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.getTime() < 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);
		}

		/*
		 * 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) {
			// scheme : // [username [: password] @] hostame [: port] [/ [path] [? query] [# fragment]]
			var e = new RegExp('^(?:https?|ftp)(?::/*(?:[^?]+)[?])([^#]+)'),
				matches = e.exec(url),
				f = new RegExp('(?:^|&)' + name + '=([^&]*)'),
				result = matches ? f.exec(matches[1]) : 0;

			return result ? decodeWrapper(result[1]) : '';
		}

		/*
		 * Set cookie value
		 */
		function setCookie(cookieName, value, msToExpire, path, domain, secure) {
			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) {
			var cookiePattern = new RegExp('(^|;)[ ]*' + cookieName + '=([^;]*)'),

				cookieMatch = cookiePattern.exec(documentAlias.cookie);

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

		/*
		 * 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 str = '',
						i,
						v;

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

				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;
		}

		/*
		 * 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 || '',

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

				// Document URL
				configCustomUrl,

				// Document title
				configTitle = documentAlias.title,

				// Extensions to be treated as download links
				configDownloadExtensions = '7z|aac|ar[cj]|as[fx]|avi|bin|csv|deb|dmg|doc|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|ppt|qtm?|ra[mr]?|rpm|sea|sit|tar|t?bz2?|tgz|torrent|txt|wav|wm[av]|wpd||xls|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,

				// Do Not Track
				configDoNotTrack,

				// Count sites which are pre-rendered