Avast Script blocking: how it works?

Please.
Tell me how Avast Script blocking provider works!
It doesn’t modify registry (I restored the old registry), it doesn’t make an online filtering (i unistalled Avast), so what?
Maybe a virus would have made a less serious mess in my PC!

Why I’m ignored?
PLEASE I NEED HELP!!!

i don’t know in which of your threads should I respond… hmmm… still deciding, as you can see, more threads are not always a benefit.