In the Folder window header is a button labeled "List" when you are in preview mode and one labeled "Preview" when you are in list mode. Clicking it changes the view mode. Preview mode is what you describe as your desired mode.
<p>In the Folder window header is a button labeled "List" when you are in preview mode and one labeled "Preview" when you are in list mode.&nbsp; Clicking it changes the view mode.&nbsp; Preview mode is what you describe as your desired mode.</p><p>&nbsp;</p>