foundation farmework – make fixed top bar close on menu click

hello folks,

im experiencing with the foundation framework ( [url]http://foundation.zurb.com/[/url] ) and i like i a lot.

using the standard framework delivered in there package i used the fixed top bar menu, but it doesnt close itself, when clicking on an entry. (in small window mode / the mode for portable devices with lower resolution).
does anyone know how to fix this?
id like the top bar menu to close when clicking a menu entry.

thanks in advance for your help ?

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