Go SOPA Yourself

go_sopa_yourself.js

(function (w, d, a) {
  var $ = w[a.k] = {
    "a": a, "w": w, "d": d, 
    "s": {}, 
    "v": {'el': []},
    "f": ( function () {
      return {       
        listen : function (el, ev, fn) {
          if(typeof $.w.addEventListener !== 'undefined') {
            el.addEventListener(ev, fn, false);
          } else if(typeof $.w.attachEvent !== 'undefined') {
            el.attachEvent('on' + ev, fn);
          }
        },
        redact: function (str) {
          var n = str.length;
          var r = ~~(Math.random() * n);
          var f = str.substr(0, r - 1);
          var b = str.substr(r, n);
          return f + '\u2588' + b;
        },
        loop: function () {
          $.w.setTimeout( function () {
            var el = $.v.el[~~(Math.random() * $.v.el.length)];
            var t = '';
            if (el.textContent) {
              el.textContent = $.f.redact(el.textContent);
            } else {
              if (el.innerText) {
                el.innerText = $.f.redact(el.innerText);
              }
            }
            $.f.loop();
          }, 10);
        },
        init : function () {
          var i = 0, j = 0, k = $.a.t.length, el = [], n = 0;
          for (j = 0; j < k; j = j + 1) {
            el = $.d.getElementsByTagName($.a.t[j]);
            for (i = 0, n = el.length; i < n; i = i + 1) {
              if (el[i].className !== 'nokilli') {
                $.v.el.push(el[i]);
              }
            }
          }
          $.f.loop();
        }
      };
    }())
  };
  $.f.listen($.w, 'load', $.f.init);
}(window, document, {
    'k': 'X' + '_' + new Date().getTime(),
    't': [
      'p', 'a'
    ]
  }
));

This little guy will gradually black out individual words appearing in the HTML tags listed in $.a.r. Quick, dirty, and non-standard-compliant, but then again: so is SOPA.

To run, add this SCRIPT tag:

<script src="go_sopa_yourself.js" type="text/javascript"></script>

... at the very bottom of your BODY tag, with the path to the script set appropriately.