// ==UserScript==
// @name			facebook.com - external apps blocker
// @namespace		www.reeloo.net
// @description		blocks all external apps stories (ie. quizzes) on homepage
// @include			http://www.facebook.com/*
// @include			http://www.new.facebook.com/*
// @version			0.2
// ==/UserScript==


//removes all external stories
function remove_external_stories(){
	
	var url = location.href;
	var block = false;
	if (url.indexOf('#/home.php') >= 0){
		block = true;
	}
	else if (url.indexOf('.facebook.com/home.php') >= 0 && url.indexOf('#') == -1){
		block = true;
	}
	else {
		block = false;
	}
	
	if (block == true){
		var streams_wrapper = document.getElementsByClassName('UIIntentionalStream_Content')[0];
		var streams = streams_wrapper.getElementsByClassName('UIStream');
		var streams_count = streams.length;
		
		//goes through all stories
		for (var i = streams_count - 1; i >= 0; i--){
			var stories = streams[i].getElementsByClassName('UIStory');
			var stories_count = stories.length;
			for (var j = stories_count - 1; j >= 0; j--){
				//this is not precise at all as it can take off even "good" stories
				if (stories[j].innerHTML.indexOf('apps.facebook.com') >= 0 || stories[j].innerHTML.indexOf('quiz.applatform.com') >= 0){
					//hides the element
					stories[j].style.display = 'none';
				}
			}
		}
	}
}


//initiates timer to remove matching stories
function starter(){
	//t - time in ms
	t = setInterval(remove_external_stories, 1000);
	//to disable timer and execute script only once at pageload, comment line above and uncomment line below, and vice-versa
	//remove_external_stories();
}


//waits till page is loaded
window.addEventListener('load', starter, false);