First of all sorry if my question sounds dumb, I'm a beginner...
Here's a link to a (great) website built with laytheme.
I'd like to have informations about the menus, more precisely the function making the page scroll down or up 'automatically.'
— How is this function called in web design 'slang'?
— How to implement it in laytheme? Is there some documentation about it?
Thanks in advance for your help.