Post this to Kentico

I have a request to have Previous and Next buttons for a certain section of our site so the user can navigate through our Service capabilities like a powerpoint.

Is there a snippet of code I could attach to a button to get the previous or next item in the menu tree? And if it's at the end of that section, then loop around?

This is the particular section of our site they want this to be on:
http://www.oaot.com/services