Filtering wp_footer() content?

Does anyone know the filter hook (if there is one) for filtering content returned by the wp_footer() template tag?

My company has an inane policy about complying with Section 508 requirements by putting < noscript > content after every closing < /script > javascript. I know that that doesn’t actually make a page 508 compliant, but I have to do it anyway so that it passes automated checks.

So I was hoping to write a plugin that would take all javascript in the footer and tacking on empty noscripts at the end, even if the scripts come from other plugins. I don’t want to hack 3rd party plugins because I’d have to go back and change them every time the developers update them. I also don’t want to ask developers to add noscripts to their plugins because I feel its unnecessary and it’s my company’s own misunderstanding of 508 at fault.

Thanks in advance.