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// DEPENDENCIES
// * /scripts/lesson.js
// * /scripts/toc.js
// * /scripts/global.js
window.onload = function() {
updateGlobalElements();
var btn = document.getElementById("top-back-btn");
btn.setAttribute("href", `../?id=${getUrlVars()['subject']}`)
}
function getUrlVars() {
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < hashes.length; i++) {
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
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