Prepare!

Are you annoyed as I am by Facebook applications (eg, FarmVille, Mafia Wars, Bejeweled, etc)? Do you hate sifting through the clutter of Facebook application posts just to find your friends' posts? Well, I've been experimenting with a script to hide most FB application posts, and a few select image gallery posts (eg, from FarmVille, etc.)

Notes:

• If you do subscribe to a few Facebook applications, and do use them periodically, then this script is NOT for you.
• This script does not replace the default [Hide Application] and [Block Application] functionality on Facebook.

To view/download, click here:

// ==UserScript==
// @name Hide specific application posts on Facebook
// @author Lee Harvey
// @namespace http://my.opera.com/Lee_Harvey/
// @version 1.0
// @description Hides specific application stories, posts, and 
//      galleries on Facebook -- for example, FarmVille Photos, and
//      Mafia Wars objects.
// ==/UserScript==

/*
 * This script is granted to the Public Domain.
 */
 
if (document.domain.match(/^(www\.)?facebook\.com$/) || 
   document.domain.match(/\.fbcdn\.net$/)) {
   
   var tmrHideFBCrap = null;
   
   function hideFBCrap() {
      var a = document.getElementsByTagName("A");
      for (var i=0,h,p,e; e = a[i]; i++) {
      
         h = e.getAttribute("href");
         if (!h || (!h.match(/^\/apps\/application\.php\?id\=/) &&
            !e.innerHTML.match(/^FarmVille/i) &&
            !e.innerHTML.match(/^Bejeweled/i) && 
            !e.innerHTML.match(/^Mafia Wars/i))) continue;
         
         p = e.parentElement;
         while (p) {
            if (p.id && p.id.match(/^div_story_/) && 
               p.className && p.className.match(/UIStory/) &&
               p.tagName.match(/^DIV$/i)) {
               
               p.style.display = "none";
               break;
            }            
            p = p.parentElement;
         }
      }
      tmrHideFBCrap = window.setTimeout(hideFBCrap, 4000);
   }
   
   function docLoad(e) {
      hideFBCrap();
      tmrHideFBCrap = window.setTimeout(hideFBCrap, 4000);
   }
   
   function docUnload(e) {
      if (tmrHideFBCrap) window.clearTimeout(tmrHideFBCrap);
      tmrHideFBCrap = null;
   } 
   
   document.addEventListener("load", docLoad, 0);
   document.addEventListener("unload", docUnload, 0);
}

As you can probably see, this script currently uses a 4-second timer to periodically check for newer (AJAX) posts. Once I determine the proper event-handling hook in Facebook, I'll remove this timer in a future release.

Enjoy.