I was working on my site and all was working fine with compojoom. Next thing I know, the 'submit comment' button isn't working. When I click on 'submit comment', the comment doesn't submit.

I am using Mozilla and I have Web Developer. I get an error in the right hand corner of my page when I try to submit the comment.

It says:

JavaScript Error: $("twebsite" is null

What does this mean? HELP PLEASE