js/preview.js in tdiary-5.0.4 vs js/preview.js in tdiary-5.0.5

@@ -14,10 +14,10 @@
   $.post(
     'update.rb',
     $('form.update').serialize() + "&appendpreview=1",
     function(data) {
       var previewContent = $(data).find('div.autopagerize_page_element');
-      if (previewContent.size() != 0) {
+      if (previewContent.length != 0) {
         $('div.autopagerize_page_element').replaceWith(previewContent);
         intervalRate = 1;
       } else {
         intervalRate *= 2;
         console.info('[preview.js] update failed, the next update will be after '