The defer_javascript filter is amazing on some pages and completely breaks others. It's frustrating because it has so much potential, but it's too dangerous fo

The defer_javascript filter is amazing on some pages and completely breaks others. It's frustrating because it has so much potential, but it's too dangerous for us to turn on by default. If it looks good on your site in testing, though, it's probably fine. The basic problem is that javascript expects to run at a certain time and at a certain point in the page so we have to do all sorts of crazy things in the background to make that appear to be the case when it isn't. This fixes many of the pages (document.write works) but there are enough ways for javascript to be introspective that we can't catch everything.