how to disable Facebook java pop-up??

[AJ84]

Recently Facebook has started removing a privacy feature that prevented strangers from searching for you by name - the "Who can look up your Timeline by name" setting. However before they can remove this setting, they need user approval and try to get that approval in the form of a javascript window that shadows the page, removes the scroll bar and asks "whether you understand the new changes".You have to click on a button "Ok, I understand" before the window goes away

Instead of having this privacy change forced down my throat, I would rather use NS to remove the javascript window
Forbidding "Facebook.com" removes the window but also some functionality of the site. I was wondering whether we could forbid certain elements like that javascript in NS without affecting the functionality of the rest of the webpage.

Any help here much appreciated!

[Giorgio Maone]

In principle, you can modify any page by using either a Gresemonkey/Scriptish script or a NoScript Script Surrogate.
However to help you concretely I should see the actual source of the page, and not just "View source" but what appears after selecting all and using "View selection source".

[AJ84]

Thanks for the offer of help but it seems like trying to copy the whole source of the page by following your steps is causing Firefox to crash I have closed every other programs except FF but the outcome is still the same - my 8GB of RAM spikes to 80% usage and FF suddenly crashes