MediaWiki:Foreground.js

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/* Collapsible Headers on Desktop */

var coll = document.getElementsByTagName('h2');
var i;

for (i = 0; i < coll.length; i++) {
  coll[i].addEventListener("click", function() {
    this.classList.toggle("active");
    var content = this.nextElementSibling;
    if (content.style.display === "block") {
      content.style.display = "none";
    } else {
      content.style.display = "block";
    }
  });
}

var coll2 = document.getElementsByClassName('coll-header');
var i2;

for (i2 = 0; i2 < coll2.length; i2++) {
  coll2[i2].addEventListener("click", function() {
    this.classList.toggle("active");
    var content = this.nextElementSibling;
    if (content.style.display === "block") {
      content.style.display = "none";
    } else {
      content.style.display = "block";
    }
  });
}