Collapsing isn't working…No function named error

I was screwing around with my site trying to get other plugins to work and apparently I ruined my Collapse-O-Matic. Not sure what I did and of course I don’t have a backup.

Here’s my site:

http://vintageland.com/mencollection/

The left sidebar has buttons that list each era and when you click on them they should expand but don’t. I think I made some changes to the script in either my head or footer which caused the problem.

Today I tried a fresh install of Collapse O Matic and I’m still having an issue.

Through Firefox I see that I’m getting this error many times and I think this is the issue:

Timestamp: 2/24/2013 8:56:12 AM
Error: [Exception… “‘JavaScript component does not have a method named: “onProgressChange”‘ when calling method: [nsIWebProgressListener::onProgressChange]” nsresult: “0x80570030 (NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED)” location: “native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0” data: no]

Any help would be greatly appreciated. I’m not sure what I have done to screw this up. Thanks for your continued support.

http://wordpress.org/extend/plugins/jquery-collapse-o-matic/