Making the Application Bar display on of top of the UI in Windows Phone 8.1 Store Apps

In Windows Phone 7, 8 and 8.1 Silverlight apps this is very easy: you just set the Opacity of the Application bar to any value less than 1 as described here, and the app does not reserve space for the app bar – it just displays the bar on top of the main UI like this:



from dzone.com: latest front page http://www.dzone.com/links/r/making_the_application_bar_display_on_of_top_of_t.html