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/**

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* Check if an ad blocker is enabled.

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* @param function callback A callback function that is executed after the check has been done.

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* The 'isEnabled' (bool) variable is passed as the callback's first argument.

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window.advanced_ads_check_adblocker = (function (callback) {

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let pendingCallbacks = [];

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let isEnabled = null;

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function RAF(RAF_callback) {

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const fn =

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window.requestAnimationFrame ||

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window.mozRequestAnimationFrame ||

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window.webkitRequestAnimationFrame ||

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function (RAF_callback) {

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return setTimeout(RAF_callback, 16);

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};

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fn.call(window, RAF_callback);

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}

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RAF(function () {

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// Create a bait.

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const ad = document.createElement('div');

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ad.innerHTML = ' ';

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ad.setAttribute('class', 'ad_unit ad-unit text-ad text_ad pub_300x250');

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ad.setAttribute(

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'style',

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'width: 1px !important; height: 1px !important; position: absolute !important; left: 0px !important; top: 0px !important; overflow: hidden !important;'

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);

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document.body.appendChild(ad);

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RAF(function () {

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const styles = window.getComputedStyle?.(ad);

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const mozBinding = styles?.getPropertyValue('-moz-binding');

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isEnabled =

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(styles && styles.getPropertyValue('display') === 'none') ||

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(typeof mozBinding === 'string' &&

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mozBinding.indexOf('about:') !== -1);

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// Call pending callbacks.

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for (var i = 0, length = pendingCallbacks.length; i < length; i++) {

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pendingCallbacks[i](isEnabled);

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}

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pendingCallbacks = [];

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});

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});

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return function (callback) {

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if ('undefined' === typeof advanced_ads_adblocker_test) {

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isEnabled = true;

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}

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if (isEnabled === null) {

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pendingCallbacks.push(callback);

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return;

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}

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// Run the callback immediately

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callback(isEnabled);

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};

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})();

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