I wrote a small javascript program in the section of an asp.net page. I want to call the routine from a codebehind program. If I try to run the program, it can't find the method. Here's the code I expected to run:

Dim l_retval as string = dispDialog()

This works for calling another VB method, but not for a script routine.
DispDialog is a script routine in the page header. How in the world do I call it?