i have same question. we have an affiliate program in our site, while we have big range of products, and each product has its own page, we want our affiliate users put a java script in their site that shows our banner and link, in javascript we have ability for rotating banners in our affiliate users site,

in our current site, each banner has its own code (regular <a>tag and tag) and they counted as backlink for us,</a>

<a>I want to know if we use java script will google think we are spammer? and also is our links count as backlink?</a>