Hello,
We are a Belgium company with expert magento skills.
We have 6 magento experts and 2 trainies on board.
We can create this function for you for 120 Dollar. (with this understanding that the menu is not dynamic changed when you change category in your store)
From start till end we will need 3 days.
1 day to program, 1 day it will be tested by the quality and bug testers.
And 1 day to approve delivery.
Best regards!