Haha. Serves you right for trying to trick Yahoo. I have no idea how long it will last - if it isn't permanent. I've never done anything against the rules, so I wouldn't know.
Ask Yahoo! - they'll know.
If you want spiders to follow your links, try using HTML to create links. Not JavaScript.
If you're unwilling to write clean, semantic HTML, you can never expect to get decent rankings. And if you hide text and/or links - you
can expect to get blacklisted (and you'll deserve it).
