From your description you could look at making the menu ‘fixed in window’ (see the Inspector palette) or use the Sticker Action - http://actionsforge.com/actions/view/230-sticker to hold the menu in a fixed position when the rest of the page scrolls.
On 21 Nov 2013, at 16:49, redsurfer wrote:
I’m looking for having a custom menu which moves when I scroll down/up in the page. I’d like it would be centered in the height of the page. Does anymore know how to do this ? Thanks.