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{\n        return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();\n    };\n\n    var s4 = function() {\n        return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);\n    };\n\n\treturn {\n\t\tloadPixel: function(url, onloadCallback) {\n\t\t\tvar protocol = document.location.protocol;\n            if (protocol.indexOf(\"http\") !== 0) {\n                protocol = \"https:\";\n            }\n\t\t\tvar img = new Image(1,1);\n\t\t\timg.onload = onloadCallback;\n\t\t\timg.src = protocol + \"//\" + url;\n            return img;\n\t\t},\n\n\t\tgetParameter: function(name, url) {\n\t\t\tif (!url) {\n\t\t\t\turl = window.location.href;\n\t\t\t}\n\t\t\tvar index = url.indexOf('?');\n\t\t\tif (index == -1) {\n\t\t\t\treturn null;\n\t\t\t}\t\t\t\n\t\t\tvar params = url.substring(index+1).split(\"&\");\t  \t  \n\n\t\t\tfor (var i=0; i < params.length; i++) {\n\t\t\t\tvar val = params[i].split(\"=\");\n\t\t\t\tif (val[0] === name) {\n\t\t\t\t\treturn val[1];\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn null;\n\t\t},\n\n        generateUUID: function() {\n            return createUUID();\n        },\n\n\t\tgetCookie: function(callback) {\n\t\t\tvar fromParam = this.getParameter(\"k_user_id\");\n\t\t\tif (fromParam) {\n\t\t\t\treturn callback(fromParam);\n\t\t\t}\n\n            var fromDomain = this.getDomainCookie();\n            if (fromDomain) {\n                return callback(fromDomain);\n            }\n\n            var xhr = createCORSRequest(\"https://services.xg4ken.com/kid\");\n            if (xhr){\n                xhr.onload = function(){\n                    if (xhr.status == 200) {\n                        var remoteCookie = xhr.responseText;\n                        setKenshooDomainCookie(remoteCookie);\n                        callback(remoteCookie);\n                    }\n                    else if (xhr.status == 404) {\n                        setKenshooDomainCookie();\n                        callback(null);\n                    }\n                };\n                xhr.onerror = function() {\n                    setKenshooDomainCookie();\n                    callback(null);\n                };\n                xhr.send();\n            }\n\t\t},\n\n        getDomainCookie: function(name) {\n            if (!name) {\n                name = \"k_user_id\";\n            }\n            var nameEQ = name + \"=\";\n            var ca = document.cookie.split(';');\n            for(var i=0; i < ca.length; i++) {\n                var c = ca[i];\n                while (c.charAt(0)==' ') c = c.substring(1,c.length);\n                if (c.indexOf(nameEQ) === 0) return c.substring(nameEQ.length,c.length);\n            }\n            return null;\n        },\n\n        createDomainCookie: function (name, value, expiryInMillis) {\n            if (!name) {\n                return;\n            }\n            if (!value) {\n                value = createUUID();\n            }\n            if (!expiryInMillis) {\n                expiryInMillis = 31536000000; //Default is 1 year\n            }\n            var date = new Date();\n            date.setTime(date.getTime() + (expiryInMillis));\n            var expires = \"; expires=\" + date.toGMTString();\n            document.cookie = name + \"=\" + value + expires + \"; path=/\";\n            return value;\n        },\n\n        createRandomDomainCookie: function (name, expiryInMillis) {\n            return this.createDomainCookie(name, \"\", expiryInMillis);\n        },\n\n        paramsToString: function(params, pathSeparator, keyPrefix) {\n            var prefix = (!keyPrefix) ? '' : keyPrefix;\n            var res = \"\";\n            if (params !== null) {\n                for (var key in params) {\n                    if (res !== \"\") {\n                        res += '&';\n                    }\n                    res += prefix + key + '=' + params[key];\n                }\n                if (res !== \"\") {\n                    res = pathSeparator + res;\n                }\n            }\n            return res;\n        },\n\n        isEmptyString: function(param) {\n            if (param === undefined || param === null) {\n                return true;\n            }\n            if (Kenshoo_Helpers.isString(param)) {\n                return Kenshoo_Helpers.trim(param) === \"\";\n            }\n            if (Kenshoo_Helpers.isNumber(param)) {\n                return false;\n            }\n            return true;\n        },\n\n        isNumber: function(param) {\n            return typeof(param) === \"number\";\n        },\n\n        isString: function(param) {\n            return typeof(param) === \"string\";\n        },\n\n        trim: function(str) {\n        return str.replace(/^\\s+|\\s+$/g,\"\");\n        },\n\n        findGroupForCookie:  function(ratio, experiment) {\n            if (!experiment) {\n                experiment = \"\";\n            }\n            var uid = this.getDomainCookie(\"k_rlsa\");\n            if (!uid) {\n                uid = setDomainCookie(\"k_rlsa\");\n            }\n            uid += \"_\"+experiment;\n\n            //convert the cookie id string into a string by summing up its cahracter values\n            var val = 0;\n            for (var i = 0 ; i < uid.length ; i++) {\n                val += uid.charCodeAt(i);\n            }\n            val = Math.abs(val);\n\n            //calculate which group the cookie should fall into\n            if (!ratio) {\n                ratio = [1, 1];\n            }\n            var sum = 0;\n            for (i = 0; i < ratio.length; i++) {\n        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'.xg4ken.com/pixel/v1?track=1&token=' + token ;\n\n        url += helper.paramsToString(params, \"&\");\n        helper.loadPixel(url);\n    };\n\n    var downloadRLSAPixel = function (conversionId, params) {\n        var url = \"googleads.g.doubleclick.net/pagead/viewthroughconversion/\" + conversionId + \"/?value=0&guid=ON&script=0\";\n        url += helper.paramsToString(params, \"&\", \"data.\");\n        url += \"&random=\" + new Date().getTime();\n        helper.loadPixel(url);\n    };\n\n\n    var downloadOCPMPixelWithConvTypeMapping = function (typeMappings, type, value, currency) {\n        var id = typeMappings[type];\n        downloadOCPMPixel(id, value, currency);\n    };\n\n    var downloadOCPMPixel = function (id, value, currency) {\n        if (id) {\n            var url = \"www.facebook.com/tr/?ev=\" + id;\n            if (value) {\n                url += \"&cd[value]=\" + value;\n            }\n            if (currency) {\n                url += \"&cd[currency]=\" + currency;\n            }\n            url += \"&noscript=1\";\n            helper.loadPixel(url);\n        }\n    };\n\n    var trackClickIfManagedByKenshoo = function () {\n        helper.getCookie(function (uid) {\n            var subdomain = helper.getParameter('ken_ks');\n            var profile = helper.getParameter('ken_prf');\n            var affcode = helper.getParameter('ken_cid');\n            if (uid && subdomain && profile && affcode) {\n                downloadKenshooPixel(subdomain, {\n                    k_user_id: uid,\n                    prof: profile,\n                    affcode: affcode,\n                    url: 'http://' + subdomain + '.xg4ken.com' //empty redirect url\n                });\n            }\n        });\n    };\n\n    return {\n        /**\n         * Tracks a conversion in Kenshoo\n         * @param subdomain - the proxy subdomain to use for this request\n         * @param token - the profile token for this request\n         * @param params - a map of parameters to send with this conversion, e.g. {revenue: 1, currency: 'USD'}\n         */\n        trackConversion: function (subdomain, token, params) {\n            downloadPixel(subdomain, token, params);\n        },\n\n        /**\n         * Tracks a click in Kenshoo.\n         * Click will be tracked only if the following parameters are in the URL:\n         * ken_ks - the xg4ken subdomain to be used for tracking\n         * ken_prf - the profile id\n         * ken_cid - the affcode\n         *\n         * Click will tracked even if there was another click that was tracked via a redirect through xg4ken.\n         */\n        trackClick: function () {\n            trackClickIfManagedByKenshoo();\n        },\n\n        /**\n         * Fire a Google RLSA pixel with optional parameters\n         * @param conversionId - The RLSA conversion id\n         * @param params - an optional map of parameters to send with this conversion, e.g. {flight_destid: \"SFO\", flight_pagetype: \"search\", flight_totalvalue: 200 }\n         * @see https://support.google.com/adwords/answer/3103357\n         */\n        trackRLSA: function (conversionId, params) {\n            downloadRLSAPixel(conversionId, params);\n        },\n\n        /**\n         * Fire a Google RLSA pixel with a custom parameter that identifies a user as beloging to a group that can in turned be used for A/B testing\n         * @param conversionId - The RLSA conversion id\n         * @param experimentId - The experiment id will be traslated into a custom parameter for RLSA which you'd be able to segment by in AdWords\n         * @param ratio - An optional array of integers that set the number of groups and their sizes. For instance ratio=[1, 1] will create two groups of equal size.\n         *                ratio=[1, 3] will create two groups, one with 25% of the population and the other with 75%\n         *                ratio=[1, 2, 3, 4] will create 4 groups, one with 10% of the population, one with 20%, one with 30% and one with 40%\n         *                More formaly, ratio=[n1, ..., nm] will create m groups, each containing nx/sum(n1..nm) of the population\n         */\n        trackRLSAExperiment: function (conversionId, experimentId, ratio) {\n            var group = helper.findGroupForCookie(ratio, experimentId);\n            if (conversionId && experimentId && group !== null) {\n                downloadRLSAPixel(conversionId, {kenshoo_experiment: experimentId, kenshoo_group: group});\n            }\n        },\n\n        /**\n         * Fire a Facebook oCPM pixel\n         * @param id - the Facebook conversion pixel id\n         * @param value - The conversion value\n         * @param currency - The conversion currency\n         * @see https://developers.facebook.com/docs/reference/ads-api/offsite-pixels/v2.2\n         */\n        trackOCPM: function (id, value, currency) {\n            downloadOCPMPixel(id, value, currency);\n        },\n\n        /**\n         * Fire a Facebook oCPM pixel while allowing to map between Kenshoo conversion types to Facebook conversion ids\n         * @param typeMappings - a mapping of Kenshoo conversion types to Facebook conversion ids, e.g. { 'sale': 1234567890, 'booking': 987654321 }\n         * @param type - The Kenshoo conversion type\n         * @param value - The conversion value\n         * @param currency - The conversion currency\n         * @see https://developers.facebook.com/docs/reference/ads-api/offsite-pixels/v2.2\n         */\n        trackOCPMWithConversionTypeMapping: function (typeMappings, type, value, currency) {\n            downloadOCPMPixelWithConvTypeMapping(typeMappings, type, value, currency);\n        },\n\n        /**\n         * Fire a user for match and sync\n         * @param uid a unique identifier representing the user.\n         */\n        match: function (uid) {\n            Uds_Pixel.matchAndSync(uid);\n        }\n\n    };\n\n}();\n\n;var Uds_Pixel = function () {\n    var helper = Kenshoo_Helpers;\n    var KID_RESOURCE_URL = 'https://web.archive.org./web/20170201043354/https://services.xg4ken.com/kid?client_domain='.concat(helper.getDomain());\n\n    var matchAndSync = function (uid) {\n        if (User_Match.shouldPerformMatch(uid) || User_Sync.shouldPerformSync()) {\n            helper.makeCORSRequest(KID_RESOURCE_URL, function (kenshooCookie) {\n                User_Match.match(uid, kenshooCookie);\n                User_Sync.sync(kenshooCookie);\n            });\n        }\n    };\n\n    return {\n        matchAndSync: function (uid) {\n            matchAndSync(uid);\n        }\n    };\n}();\n;var MATCH_COOKIE_NAME = 'kenshoo_id_match';\n\nvar User_Match = function () {\n    var helper = Kenshoo_Helpers;\n\n    var udsMatchUrl = function (subDomain, kenshooCookie, uid) {\n        return 'services.xg4ken.com/services/uds/match?source=' + subDomain + '&ken_id=' + kenshooCookie + '&partner_uid=' + uid + '&hmac=';\n    };\n\n    return {\n        match: function (uid, kenshooCookie) {\n            if (this.shouldPerformMatch(uid) &&\n                ! helper.isEmptyString(kenshooCookie)) {\n                var url = udsMatchUrl(helper.getDomain(), kenshooCookie, uid);\n\n                helper.loadPixel(url, function () {\n                    helper.createRandomDomainCookie(MATCH_COOKIE_NAME, 604800000); //1 week expiry\n                });\n            }\n        },\n\n        shouldPerformMatch: function(uid) {\n            return helper.isEmptyString(helper.getDomainCookie(MATCH_COOKIE_NAME)) && !helper.isEmptyString(uid);\n        }\n    };\n}();\n;var RAND_URL_PARAM = '&_rand=';\n\nvar User_Sync = function () {\n    var helper = Kenshoo_Helpers;\n\n    var tapadConfig = {\n        prefix: 'tapestry.tapad.com/tapestry/1?ta_partner_id=2049&ta_format=png&ta_partner_did=',\n        syncCookieName: 'kenshoo_tapad_id_sync',\n        cookieExpiry: 86400000 //1 day expiry\n    };\n\n    //var drawbridgeConfig = {\n    //    prefix: 'p.adsymptotic.com/d/px/?_pid=12330&_psign=5cb0dcdf064bbf8b209f15056b22aa54&_puuid=',\n    //    syncCookieName: 'kenshoo_drawbridge_id_sync',\n    //    cookieExpiry: 604800000 //1 week expiry\n    //};\n\n    var crosswiseConfig = {\n        prefix: 'p.univide.com/t.gif?pid=50&pidt=0&pdid=',\n        syncCookieName: 'kenshoo_crosswise_id_sync',\n        cookieExpiry: 86400000 //1 day expiry\n    };\n\n    var vendors = [tapadConfig, crosswiseConfig];\n\n    var vendorUrl = function (prefix, kenshooCookie, randomNumber) {\n        return prefix + kenshooCookie + RAND_URL_PARAM + randomNumber;\n    };\n\n    var shouldPerformSyncForVendor = function(cookieName) {\n        return helper.isEmptyString(helper.getDomainCookie(cookieName));\n    };\n\n    var syncVendor = function (vendor, kenshooCookie) {\n        if (shouldPerformSyncForVendor(vendor.syncCookieName)) {\n            var randomNumber = helper.getRandomNumber(1, 10000);\n            var url = vendorUrl(vendor.prefix, kenshooCookie, randomNumber);\n\n            helper.loadPixel(url, function() {\n                helper.createRandomDomainCookie(vendor.syncCookieName, vendor.cookieExpiry);\n            });\n        }\n    };\n\n    return {\n        sync: function (kenshooCookie) {\n            for (var i = 0; i < vendors.length; i++) {\n                syncVendor(vendors[i], kenshooCookie);\n            }\n        },\n\n        shouldPerformSync: function() {\n            for (var i = 0; i < vendors.length; i++) {\n                if (shouldPerformSyncForVendor(vendors[i].syncCookieName)) {\n                    return true;\n                }\n            }\n            return false;\n        }\n    };\n}();\n"]}