It should follow designs from shorlander and yuan: - Normally, the toggle will open and close the thumbnail area. - It displays the number of tabs currently open. - It displays a down arrow above the number if the thumbnails are showing, up arrow if not. - If there is only one tab open, there is a plus displayed instead of a number of tabs. That plus button, when clicked, creates a new tab and without opening up the thumbnail area.

Yuan simplified all of this: http://ywang.dropmark.com/74498

Resolving bugs in the Firefox for Metro product that are fixed on the elm branch. Sorry for the bugspam. Search your email for "bugspam-elm" if you want to find and delete all of these messages at once.