I am design a website where there is a horizontal top menu and based on the selected menu item, it populates a vertical menu on the left hand side.

An example:

Menu1 Menu2 Menu 3
-----------------------------------
subMenu1
subMenu2
subMenu3

I would like that the selected top menu item link to the same page as the first sub menu item. For example, Menu1 and subMenu1 would like to the same page.

I attempted to create Menu1 as a "Link an existing document" type and have it link to subMenu1 which is a Page (menu item) type.

This worked fine however I wanted to have different menu captions for Menu1 and subMenu1. When I set the menu caption for Menu1, it automatically sets the same menu caption for subMenu1.

Is there a way that I can have different menu captions for linked documents?
Or is there another why that I can link documents so that they can have different menu captions but link to the same page?

I want to link to the same page and not create two separate pages that inherit from the same template because I don't want the user to have to update the content text on both pages. (i.e. in the editable region controls).

Hopefully the above is clear.

Thanks,
Garry