Menus + Function making page scroll 'automatically'

[ThomasH]

Hi there,
First of all sorry if my question sounds dumb, I'm a beginner...

Here's a link to a (great) website built with laytheme.
http://joaodrumond.com/

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.
Thomas

[mariusjopen]

Dear @ThomasH
can you send a link to your website and show us what exactly you want to achieve?

Best!

PS: There are no stupid questions!