// ==UserScript==
// @name           Facebook Diet
// @namespace      http://www.arikfr.com/projects/facebook_diet.js
// @description    Facebook Diet Script - Block Facebook for 45 minutes each hour
// @include        http://facebook.com/*
// @include        http://*.facebook.com/*
// ==/UserScript==


now = new Date();
if (now.getMinutes()>15) {
	next = 60 - now.getMinutes();
	javascript:document.write('<center><h1>Don\'t you have something better to do?</h1>(Come back in ' + next + ' minutes)</center>');
}