Html parsing errors in Firefox

[les]

I have http://att.my.yahoo.com/?_bc=1 as my home page.

There are about 100 errors in parsing the html code, and I captured the
unique ones, which are 20.  The highest repeat is this one:

Warning: Expected declaration but found '*'.  Skipped to next
declaration.

One location from the list:

Source File:
http://l.yimg.com/j/static/versioned_asset/v7z/print_css/eNqNkNEOgjAMRb8IEBV58GOWuRVosq2kLRr.3vHgg4kOnpq059wmFzwqMdrQOJFmXbBhENBqoKRSjYxezLlu61PNbXe99X2duTt8WY5ipNQ8rMA.5SzTIhD2yRf6A3mrzFUk_5mb0F367pigYGPhxUQRTGaXALKHBbBe8nI1A1hduGgcKAEdpVKEoMLWkEn2aab8HNgMRJqHgmjBtKzoQqnaR6Dxz3lmTGp.QW8gd9B4
Line: 6964

Should I report these to the firefox folks, or is there a common html
interpreter that is called by firefox, which has its own group or
buglist?

Regards,
Les H