Visual Studio 2010 - Set XAML Designer Display to Vertical

I'm looking at designing some applications for Windows Phone 7 using Visual Studio 2010. Each time I create a .XAML file the IDE opens the file up with the designer and the script side-by-side. I would prefer to have them displayed ve开发者_C百科rtically but I can't find the option to do that.

I see from here that it may not actually be possible. Does anyone know if it is in fact possible?

In the center of the screen, at the bottom of the separator between the code view and the designer view, click the button with the horizontal line it to switch to "Horizontal Split".