javascript: (function() {
    (function() {
        var i, elements = document.querySelectorAll('body *');
        for (i = 0; i < elements.length; i++) {
            if (getComputedStyle(elements[i]).position === 'fixed') {
                elements[i].parentNode.removeChild(elements[i]);
            }
        }
    })();
    document.querySelector('body').style.setProperty('overflow', 'auto', 'important');
    document.querySelector('html').style.setProperty('overflow', 'auto', 'important');
})()


// URL encoded
javascript:(function()%7B(function%20()%20%7Bvar%20i%2C%20elements%20%3D%20document.querySelectorAll('body%20*')%3Bfor%20(i%20%3D%200%3B%20i%20%3C%20elements.length%3B%20i%2B%2B)%20%7Bif%20(getComputedStyle(elements%5Bi%5D).position%20%3D%3D%3D%20'fixed')%20%7Belements%5Bi%5D.parentNode.removeChild(elements%5Bi%5D)%3B%7D%7D%7D)();document.querySelector('body').style.setProperty('overflow','auto','important');%20document.querySelector('html').style.setProperty('overflow','auto','important');%7D)()