can javascript help me to solve this problem.

[mihir maniar]

i would like to have a functionality that is as described below.whenever you visit any site and if it requires any activex controls to be downloaded then it will prompt a message asking for your permission.but at the same time there is a small check box that says"always trust content from this site.". which when checked always allows anything to be downloaded from that site in future.i want that kind of functionality.please guide me how to acheive it.