hidden links hacked into my site (only show to googlebot)

[whogsett]

I have a very busy ecom site, and somehow it is showing googlebot a set of links that were inserted by hacker.
however, there is nothing in the code to insert the links.
What are the other possibilities?

you can only see the links when you view the source code of a google cache on my site. - but google is seeing them.
Some of the links are also breaking my code.

Help

[bill]

Welcome to WebmasterWorld whogsett.

If the code only shows up for Googlebot then get a user agent switcher for your browser, masquerade as Googlebot and see what shows up in the source.