IE security settings set to high - javascript not working

Question

As soon as I set the IE security settings to high the javascript on my page stops executing. It doesn't throw an error or anything, and not even alert works. if I set the security settings back to medium everything works as it should. Has anybody ever experienced something like this?

Answer 1

This behavior is by design.
The High security setting disables Javascript.

Answer 2

Setting security settings to high in Internet Explorer disables JavaScript: