what the !@@#% does "The Stub Received Bad Data" mean?

http://www.enviromark.ca/french/produits.html

run your mouse over a producers name and click on any link in the products box and the JS error is "The Stub Received Bad Data".

what is this, i didnt make any changes to the page, i dont understand

In what browser do you get the js error in? I don't see an error in FF or IE. However I would advise that you specify a background color because not everyones background color is white. Your page just looks like a bunch of boxes to me because my default background color is like a bluish color.

I also didn't see that error in FF. But I think the error is caused by PDF since the link opens a PDF file.