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<!DOCTYPE html>
<html lang="en" manifest="{{GET[manifest]}}">
<script>
if (!window.applicationCache) {
parent.postMessage('application cache not supported');
} else {
applicationCache.onnoupdate =
applicationCache.ondownloading =
applicationCache.onobsolete =
applicationCache.onerror = function() {
parent.postMessage('okay');
};
}
</script>
</html>