Client-side Abuse

I would very much like to see Google 'flag' pages with elaborate functions called by OnLoad and OnOnload Events. With modern CSS and RSS, client side functions should really be at a bare minimum. The trick would be to differentiate between basic cookie functions and unnecessary and or intrusive functions. It would have to be a very sophisticated algorithm, but in so doing the end user experience would be dramatically improved and result in self-regulation of bloated web development practices.