Item Preview > subPrefix must be unencoded here $(function() { $.ajax({ url: ‘//ia800305.us.archive.org/BookReader/BookReaderJSIA.php?id=caribbeancurrents00manuel&itemPath=/33/items/caribbeancurrents00manuel&server=ia800305.us.archive.org&format=jsonp&subPrefix=caribbeancurrents00manuel&requestUri=/details/caribbeancurrents00manuel’, type: ‘GET’, dataType: ‘json’, xhrFields: { withCredentials: true }, crossDomain: true }).then(function(response) { var urlParams = AJS.paramsToJSON(); var getAutoflipParams = function getAutoflipParams() { return { autoflip: parseInt(urlParams.autoflip, 10) === 1, flipSpeed: urlParams.flipSpeed || 2000, flipDelay: urlParams.flipDelay || 5000 }; }; var options…