IE restricing activeX content?!?

when did this start? is there any way to get around this? do you even know what i am talking about?

i have some onMouseOver stuff on my page, but IE blocks those scripts unless you tell it not to. now, i am thinking, the average person is going to assume that my scripts are harmful, and they are going to leave them blocked. the only thing, my websites COMPLETELY rely on onMouseOver stuff. so is there any way i can get around IE’s new restricting sensless crap?