Matt Cutts has made reference to JavaScript redirects as being bad several times. This is a poor way to handle things.

One option would be a meta refresh to the new page. This is better than the JavaScript, but still not idea.

Ideally, you'll use a 301 redirect. If you need information on setting these up on Apache, do a search for .htaccess 301 and you'll find many references. For IIS, it's handled differently, but still not too bad.

Doing a correct redirect and filing a reinclusion request (if necessary) should help out quite a bit.

Brian.

__________________
ToolBarn.com, an Internet Retailer Top 500 and Inc. 500 Company | Tool Parts | Pet Supplies