SetInterval (DHTML) and Server side script

[IlseDC]

In my ASP I use SetInterval to do a certain action.
In the SetInterval, I need the content of a textfile on the server.
I know that you can read textfiles with the FileSystemObject, but this is server side script.

Does anyone know how I can use the content of a textfile in DHTML - SetInterval.

Some examples in VBScript?

Thanks,
IlseDC