Simple Javascript cleanup to resolve errors

I am trying to move some javascript to another location on the same domain. I am getting a lot of errors relating to TypeError: 'null' is not an object (evaluating '[login to view URL] Everything works perfectly when it is called through one part of the site, but throws errors when on another. My experience is average, but I am spending too much time on this. I think this just needs some cleanup to work in a different directory. Thanks