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<script>
var meta = document.createElement('meta');
meta.setAttribute('http-equiv', 'Content-Security-Policy');
meta.setAttribute('content', decodeURIComponent(location.search.substring(1)));
document.head.appendChild(meta);
function load_image(url) {
return new Promise(function(resolve, reject) {
var img = document.createElement('img');
document.body.appendChild(img);
img.onload = resolve;
img.onerror = reject;
img.src = url;
});
}
</script>