Gallery with filterable menu

Hello,
My site must display several large galleries. To facilitate the navigation in these different galleries, I would like to propose at the top a main menu allowing to pass easily from one gallery to another. Note that I do not want to create a page for each gallery, it would be too complicated to manage. All galleries must be stored on the same page and must be displayed and hidden in the manner of a filterable portfolio.
Any idea ?

The page I need help with: [log in to see the link]