Adds time of Facebook-Wall items as li-title (hover-text)

fb_timestamp.user.js

// ==UserScript==
// @name Facebook Timestamp Viewer
// @description Adds time of Facebook-Wall items as li-title (hover-text)
// @namespace Facebook Timestamp Viewer
// @version 0.1.1
// @include http*://*.facebook.com/*sk=wall
// 
// ==/UserScript==

function addJQuery(callback) {
	var script = document.createElement("script");
	script.setAttribute("src", "http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js");
	script.addEventListener('load', function() {
		var script = document.createElement("script");
		script.textContent = "(" + callback.toString() + ")();";
		document.body.appendChild(script);
	}, false);
	document.body.appendChild(script);
}

function main() {
	$('li').each(function(){
			if(typeof($(this).attr('data-ft')) !== 'undefined' ) {
				data = jQuery.parseJSON($(this).attr('data-ft'));
				if(typeof(data.pub_time) !== 'undefined') {
					$(this).attr('title', new Date(data.pub_time*1000));
				}
			}
	});
}
addJQuery(main);