MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
document.addEventListener('DOMContentLoaded', function () {
  document.querySelectorAll('.hover-gif').forEach(function (img) {
    img.addEventListener('mouseover', function () {
      const src = img.src.split('?')[0];
      img.src = src + '?1';
    });
  });
});