(function () {

let a = document.createElement('a');

a.innerHTML = ' ';

a.style.backgroundColor = 'yellow';

a.style.position = 'absolute';

a.style.zIndex = 10000000;

a.style.bottom = '2px';

a.style.left = '2px';

a.style.width = '16px';

a.style.height = '16px';

a.style.cursor = 'pointer';

a.style.opacity = '0.2';

a.style.borderRadius = '8px';

let base = document.currentScript;

if (base) {

base = base.src.replace(/[^/]+\.js/, '__clean_cache__');

}

document.addEventListener('DOMContentLoaded', function () {

document.body.appendChild(a);

a.onmouseover = function () {

this.style.opacity = '0.8';

};

a.onmouseout = function () {

this.style.opacity = '0.2';

};

a.onclick = function () {

if (!base) {

return;

}

let img = document.createElement('img');

img.src = base;

img.onerror = function () {

delete img.onerror;

location.reload();

};

img.onload = function () {

delete img.onerror;

location.reload();

};

};

});

})();