a.js is adding 'alt' class to table rows

can you tell me where this is so I can modify it? Dang if I can find it. Here's wht my programmer said:

I downloaded your webpage, did some client-side debugging, and realized that you have a javascript, a.js, that adds a 'alt'
class to all the table rows. The easiest way is to remove the problem javascript; the second easiest way is to find a.js and stop it from adding the 'alt' class;

This 'alt' class is prohibiting the inline google docs plugin from functioning properly. What will break if the 'alt' class is removed?