I have several dd-wrt routers installed in organization. I would like to have a html pop-up (Or whatever would bypass pop-up blocker)appear when a user on the inside of the network visits a certain page.
For example, if a user visits a porn site like [url removed, login to view], a pop appears from my web site saying "you are entering a prohibited website." but, I don't want to stop the user. Just pop-up the page.
I want to be able to add the site url myself and provide the respective pop-up.