Send it in. Diary of a Geek Game.
Finder preferences The default setting is to show the contents in the same window.
Holding down the option key when opening a folder reverses the setting. Some of the Finder window toolbar's large shortcut buttons have been remapped to match the new directory structure in Public Beta. This has several consequences. First, it means that a Finder window's minimum width is constrained by the width needed to display the toolbar. The minimum height of Finder windows is also constrained, although to what, I'm not sure.