This menu is quite curious and can be very useful in some cases, loading site but the menu is hidden by passing the mouse over a given area menu slides down leaving us choose either option.

The entire file does not weigh more than 36KB, but the javascript is just 9KB not depend on any bookstore so I can use it with no problem.

The site has a detailed explanation of how to implement it.

Webber Dock Menu 2.0