I have a website set up as follows:

DomainRoot/VirtualDirectory

The domain root resembles: http://mydomain.com

The virtualdirectory is set up to be the root of an asp.net application.

so: http://mydomain.com/VirtualDirectory is the root of my asp.net 
application.

I am using .net to generate a javascript menu system. Thus clicking a link 
to: pagename.aspx takes me to a page in the current directory. However, I 
have a directory structure (don't we all)

domainRoot/VirtualDirectory/SubDirectory1
domainRoot/VirtualDirectory/SubDirectory2
etc.

From SubDirectory1 to get to a page in subdirectory 2 I must go up one 
level and then down into Subdirectory2, but from VirtualDirectory I must 
go down into Subdirectory.

To make this work I expect I can use '/' to represent 'go to the 
application root'. Then I just put the path from the root to the place I 
want to go and it is always the same.

Instead of going to the application root (VirtualDirectory) I go to the 
DomainRoot Directory.

This would be fine if the code was not meant to be portable. I need to be 
able to move the code to other servers, other domains etc. Sometimes it 
may be in a virtual directory, sometimes it may be in the web-root 
directory. I thought '/' would do this. It doesn't.

I tried '~' but that is not recognized by browsers and since I am 
generating a string it just gets passed as '~'.

How can I configure my server or application to only go to the root of the 
app? Not the root of the web?