webmaster tools 404

I got this as well on my own site. I have no solution for that. It seems to be like a Google problem https://www.seomofo.com/advanced/do-not-let-google-crawl-javascript.html

var ratings_mouseover_image=new Image();ratings_mouseover_image.src=ratingsL10n.plugin_url+"/images/"+ratingsL10n.image+"/rating_over."+ratingsL10n.image_ext;

I have always used Disallow: /rating_over* in robots to solve this.