Blocking specific items on a web page?

  • Hi, I use a browser plugin that allows me to filter out specific portions of a webpage, for example the footer section of a website or some area of a page that otherwise bugs me.  The plugin keeps track of all my selections and when it comes across one, it filters it out for that specific browser.  Is there a browser plugin like that, that could maintain an element block list that a pfsense package could read, which would allow me to maintain these custom blocks for all computers on a network?  Basically a pfsense package that filters out specific DOM elements within a webpage, before it even reaches the computer.

    Taking that a step further, I'd like to intercept javascripts that try to open new windows.

    Could anyone point me to a package that gives me that type of resolution in blocking?