Dropdown Menus in IE 6

[vestorlogic]

Has anyone discovered a problem between any of their plugins and the dropdown issue? We have had several reports from site visitors that they don't see any dropdowns but we cannot confirm their browser version. I am leaning towards a plugin issue but didn't know if anyone had already discovered an incompatibility issue already.

Update: I had one of my programmers look into this for me and here is his feedback:

The site is throwing a Javascript error on load, which is likely causing cross browser issues. The file that is causing it is:
http://desertperinatalassociates.com...js/dropdown.js

The error message is:

'document.getElementById(...)' is null or not an object

I would suggest checking to see if there's a newer version of this theme available. They may have released a bug fix.

Does anyone on the StudioPress side have any information to add that might help us resolve this issue? Any bug fix for the theme? Help?