Hi ! how can i do this ?

Hello, i am newbie and just want to create my e-commerce website. (Printer services)

For understanding my needing, i think a picture can describe more easily and understandable my needing.

Please, understand that :

1 / 1 need 1 master category menu (without submenu) (it is the horizontal "Main Menu" (this MASTER MENU is always visible and don't change, when clic on a specific category A new menu appear for this category. (and the same for each category)

2/ When i select a category on the "Main Menu", a dedicated menu appear above the "Main Menu" (always in the same window but another section) (type AJAX)

> This menu integrate another category for this category. When a selection is done, an another menu (for this category appears and show another category or link)

3 / the area above change on clic selection menu

> this area list the option that customer can choose and adjust a listing for this product with this configuration, and the quantity parameter determine the price for this final product (depending of selection options for a type of product because different product have different options...)

have a look :

link to image

Can you tell me if this is possible ? And what is the better doing for this result ?

Thanks for help

(ps : i m french)