Document Level Function failing only when called on form open

I have a document level function that works fine. I want to run that function when the document opens - so I made another document level script and told it to run that function when the form opens (I just wrote the name of the function in a document level script). However when I do that Acrobat tells me that the function doesn't exist and it never loads the function.
 
I think this has to do with the order in which adobe is building the form - that is, it calls the function in the document level script before it gets a chance to actually load it - then it fails - then it never loads it....?
 
Is there any work around for this? Am I doing something incorrectly?
 
I thought about attaching it to the page On-Open event but that won't work for me due to some specifics of my situation.
 
Any idea what is going on here in acrobat and how I can work around it? It is adobe acrobat pro 8.1 (Not livecycle).
 
Thank You.