IdleBlur.js

javascript:(function(){
  var delay=60000, delay2=1000, intensity=0.0, timer, timer2, i=0;
  function reset(){document.documentElement.setAttribute('style',''); clearTimeout(timer); clearTimeout(timer2); intensity = 0.0; i = 0; timer = setTimeout(blur, delay);}
  function blur(){
    if(intensity<6){
      intensity+=0.5;
      applyBlur(intensity);
      timer2 = setTimeout(blur, delay2);
    }
  }
  function applyBlur(intens){document.documentElement.setAttribute('style', 'filter:url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'blur\'><feGaussianBlur stdDeviation=\''+intens+'\' /></filter></svg>#blur");-webkit-filter:blur('+intens+'px);filter:blur('+intens+'px);');}
  ['mousemove', 'keydown', 'mousedown', 'scroll'].forEach(function(e){document.addEventListener(e, reset, false);});
  reset();
})();void(0);

Does anyone have a version of this that I could drag to my bookmarks bar?