AdBlock Plus is what you want, yep. NoScript, on the other hand, is great. . . but very demanding for most users, simply because most users don't know which sites to block scripts from. On many websites, there are scripts coming in from several secondary sites, and NoScript will list all of these, along with the main. Judging what's what requires a fair amount of knowledge about sites in general, and some [types] in particular, or a heck of a lot of luck. And maybe patience too.
On this basis,
even though NoScript provides web security possibly unrivalled, I
always install ABP on PCs I've set up or worked on (well, I wouldn't, if anyone objected, but no-one has so far), and
never NS. I've showed the latter to some people, and well, their reactions were enough to further convince me that's the best way of going about it.
Anyway, with ABP, flash stuff will often show a little translucent tab, above the flash at top right
IIRC, and you can click on that, and tell the add-on to block that particular thing, or - more often - selectively block stuff from a web address pattern. And *many* things are simply blocked by default anyway, according to a list, if you decide to subscribe to one (e.g., Easylist USA) when you install the add-on.
edit --- and if ABP doesn't do everything you want it to, you might want to check out
Flashblock, just to make sure (to use
with ABP, not instead of, btw).
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