At work, certain protocols are blocked, and websites that I visit try to access these protocols with Javascript. These sites work fine when these requests fail (except for whatever it's trying to do with the requests), but I have to click cancel on a multitude of proxy authentication dialogs.
What I want to do is just have firefox silently ignore this, so I can use the website without having to click cancel 8 times on every action I make (this includes all the stack overflow style sites which is trying to make requests with the ws: protocol).
Best Answer
I had the same problem; some sites cause multiple proxy authentication requests to be issued.
If your firm uses a proxy, just add the URL you want to block on the "no proxy list" of Firefox to avoid that. Start by adding "sockets.ny.stackexchange.com" to the "no proxy list".
The URL would try to access without using proxy, fail, and it's done.
Quick and dirty but works :)